chore(release): v0.4.0-preview.0

* fix: reset authType settings

* fix: failed json-output tests

* fix: sandbox exception log to stderr

.github/workflows/release.yml

@@ -101,15 +101,27 @@ jobs:
       - name: 'Get the version'
         id: 'version'
         run: |
-          VERSION_JSON=$(node scripts/get-release-version.js)
+          VERSION_ARGS=()
+          if [[ "${IS_NIGHTLY}" == "true" ]]; then
+            VERSION_ARGS+=(--type=nightly)
+          elif [[ "${IS_PREVIEW}" == "true" ]]; then
+            VERSION_ARGS+=(--type=preview)
+            if [[ -n "${MANUAL_VERSION}" ]]; then
+              VERSION_ARGS+=("--preview_version_override=${MANUAL_VERSION}")
+            fi
+          else
+            VERSION_ARGS+=(--type=stable)
+            if [[ -n "${MANUAL_VERSION}" ]]; then
+              VERSION_ARGS+=("--stable_version_override=${MANUAL_VERSION}")
+            fi
+          fi
+
+          VERSION_JSON=$(node scripts/get-release-version.js "${VERSION_ARGS[@]}")
           echo "RELEASE_TAG=$(echo "$VERSION_JSON" | jq -r .releaseTag)" >> "$GITHUB_OUTPUT"
           echo "RELEASE_VERSION=$(echo "$VERSION_JSON" | jq -r .releaseVersion)" >> "$GITHUB_OUTPUT"
           echo "NPM_TAG=$(echo "$VERSION_JSON" | jq -r .npmTag)" >> "$GITHUB_OUTPUT"
 
-          # Get the previous tag for release notes generation
-          CURRENT_TAG=$(echo "$VERSION_JSON" | jq -r .releaseTag)
-          PREVIOUS_TAG=$(node scripts/get-previous-tag.js "$CURRENT_TAG" || echo "")
-          echo "PREVIOUS_TAG=${PREVIOUS_TAG}" >> "$GITHUB_OUTPUT"
+          echo "PREVIOUS_RELEASE_TAG=$(echo "$VERSION_JSON" | jq -r .previousReleaseTag)" >> "$GITHUB_OUTPUT"
         env:
           GITHUB_TOKEN: '${{ secrets.GITHUB_TOKEN }}'
           IS_NIGHTLY: '${{ steps.vars.outputs.is_nightly }}'
@@ -155,7 +167,11 @@ jobs:
           RELEASE_TAG: '${{ steps.version.outputs.RELEASE_TAG }}'
         run: |-
           git add package.json package-lock.json packages/*/package.json
-          git commit -m "chore(release): ${RELEASE_TAG}"
+          if git diff --staged --quiet; then
+            echo "No version changes to commit"
+          else
+            git commit -m "chore(release): ${RELEASE_TAG}"
+          fi
           if [[ "${IS_DRY_RUN}" == "false" ]]; then
             echo "Pushing release branch to remote..."
             git push --set-upstream origin "${BRANCH_NAME}" --follow-tags
@@ -163,9 +179,9 @@ jobs:
             echo "Dry run enabled. Skipping push."
           fi
 
-      - name: 'Build and Prepare Packages'
+      - name: 'Build Bundle and Prepare Package'
         run: |-
-          npm run build:packages
+          npm run bundle
           npm run prepare:package
 
       - name: 'Configure npm for publishing'
@@ -175,20 +191,10 @@ jobs:
           registry-url: 'https://registry.npmjs.org'
           scope: '@qwen-code'
 
-      - name: 'Publish @qwen-code/qwen-code-core'
-        run: |-
-          npm publish --workspace=@qwen-code/qwen-code-core --access public --tag=${{ steps.version.outputs.NPM_TAG }} ${{ steps.vars.outputs.is_dry_run == 'true' && '--dry-run' || '' }}
-        env:
-          NODE_AUTH_TOKEN: '${{ secrets.NPM_TOKEN }}'
-
-      - name: 'Install latest core package'
-        if: |-
-          ${{ steps.vars.outputs.is_dry_run == 'false' }}
-        run: 'npm install @qwen-code/qwen-code-core@${{ steps.version.outputs.RELEASE_VERSION }} --workspace=@qwen-code/qwen-code --save-exact'
-
       - name: 'Publish @qwen-code/qwen-code'
+        working-directory: 'dist'
         run: |-
-          npm publish --workspace=@qwen-code/qwen-code --access public --tag=${{ steps.version.outputs.NPM_TAG }} ${{ steps.vars.outputs.is_dry_run == 'true' && '--dry-run' || '' }}
+          npm publish --access public --tag=${{ steps.version.outputs.NPM_TAG }} ${{ steps.vars.outputs.is_dry_run == 'true' && '--dry-run' || '' }}
         env:
           NODE_AUTH_TOKEN: '${{ secrets.NPM_TOKEN }}'
 
@@ -199,13 +205,13 @@ jobs:
           GITHUB_TOKEN: '${{ secrets.GITHUB_TOKEN }}'
           RELEASE_BRANCH: '${{ steps.release_branch.outputs.BRANCH_NAME }}'
           RELEASE_TAG: '${{ steps.version.outputs.RELEASE_TAG }}'
-          PREVIOUS_TAG: '${{ steps.version.outputs.PREVIOUS_TAG }}'
+          PREVIOUS_RELEASE_TAG: '${{ steps.version.outputs.PREVIOUS_RELEASE_TAG }}'
         run: |-
           gh release create "${RELEASE_TAG}" \
-            bundle/gemini.js \
+            dist/cli.js \
             --target "$RELEASE_BRANCH" \
             --title "Release ${RELEASE_TAG}" \
-            --notes-start-tag "$PREVIOUS_TAG" \
+            --notes-start-tag "$PREVIOUS_RELEASE_TAG" \
             --generate-notes
 
       - name: 'Create Issue on Failure'
@@ -218,5 +224,4 @@ jobs:
         run: |-
           gh issue create \
             --title "Release Failed for ${RELEASE_TAG} on $(date +'%Y-%m-%d')" \
-            --body "The release workflow failed. See the full run for details: ${DETAILS_URL}" \
-            --label "kind/bug,release-failure"
+            --body "The release workflow failed. See the full run for details: ${DETAILS_URL}"

.vscode/launch.json

@@ -73,7 +73,16 @@
       "request": "launch",
       "name": "Launch CLI Non-Interactive",
       "runtimeExecutable": "npm",
-      "runtimeArgs": ["run", "start", "--", "-p", "${input:prompt}", "-y"],
+      "runtimeArgs": [
+        "run",
+        "start",
+        "--",
+        "-p",
+        "${input:prompt}",
+        "-y",
+        "--output-format",
+        "stream-json"
+      ],
       "skipFiles": ["<node_internals>/**"],
       "cwd": "${workspaceFolder}",
       "console": "integratedTerminal",

README.md

@@ -25,7 +25,7 @@
   
 </div>
 
-Qwen Code is a powerful command-line AI workflow tool adapted from [**Gemini CLI**](https://github.com/google-gemini/gemini-cli) ([details](./README.gemini.md)), specifically optimized for [Qwen3-Coder](https://github.com/QwenLM/Qwen3-Coder) models. It enhances your development workflow with advanced code understanding, automated tasks, and intelligent assistance.
+Qwen Code is a powerful command-line AI workflow tool adapted from [**Gemini CLI**](https://github.com/google-gemini/gemini-cli), specifically optimized for [Qwen3-Coder](https://github.com/QwenLM/Qwen3-Coder) models. It enhances your development workflow with advanced code understanding, automated tasks, and intelligent assistance.
 
 ## 💡 Free Options Available
 

docs/cli/commands.md

@@ -11,31 +11,8 @@ Slash commands provide meta-level control over the CLI itself.
 - **`/bug`**
   - **Description:** File an issue about Qwen Code. By default, the issue is filed within the GitHub repository for Qwen Code. The string you enter after `/bug` will become the headline for the bug being filed. The default `/bug` behavior can be modified using the `advanced.bugCommand` setting in your `.qwen/settings.json` files.
 
-- **`/chat`**
-  - **Description:** Save and resume conversation history for branching conversation state interactively, or resuming a previous state from a later session.
-  - **Sub-commands:**
-    - **`save`**
-      - **Description:** Saves the current conversation history. You must add a `<tag>` for identifying the conversation state.
-      - **Usage:** `/chat save <tag>`
-      - **Details on Checkpoint Location:** The default locations for saved chat checkpoints are:
-        - Linux/macOS: `~/.qwen/tmp/<project_hash>/`
-        - Windows: `C:\Users\<YourUsername>\.qwen\tmp\<project_hash>\`
-        - When you run `/chat list`, the CLI only scans these specific directories to find available checkpoints.
-        - **Note:** These checkpoints are for manually saving and resuming conversation states. For automatic checkpoints created before file modifications, see the [Checkpointing documentation](../checkpointing.md).
-    - **`resume`**
-      - **Description:** Resumes a conversation from a previous save.
-      - **Usage:** `/chat resume <tag>`
-    - **`list`**
-      - **Description:** Lists available tags for chat state resumption.
-    - **`delete`**
-      - **Description:** Deletes a saved conversation checkpoint.
-      - **Usage:** `/chat delete <tag>`
-    - **`share`**
-      - **Description** Writes the current conversation to a provided Markdown or JSON file.
-      - **Usage** `/chat share file.md` or `/chat share file.json`. If no filename is provided, then the CLI will generate one.
-
-- **`/clear`**
-  - **Description:** Clear the terminal screen, including the visible session history and scrollback within the CLI. The underlying session data (for history recall) might be preserved depending on the exact implementation, but the visual display is cleared.
+- **`/clear`** (aliases: `reset`, `new`)
+  - **Description:** Clear conversation history and free up context by starting a fresh session. Also clears the terminal output and scrollback within the CLI.
   - **Keyboard shortcut:** Press **Ctrl+L** at any time to perform a clear action.
 
 - **`/summary`**
@@ -66,17 +43,6 @@ Slash commands provide meta-level control over the CLI itself.
       - **Description:** Display all directories added by `/directory add` and `--include-directories`.
       - **Usage:** `/directory show`
 
-- **`/directory`** (or **`/dir`**)
-  - **Description:** Manage workspace directories for multi-directory support.
-  - **Sub-commands:**
-    - **`add`**:
-      - **Description:** Add a directory to the workspace. The path can be absolute or relative to the current working directory. Moreover, the reference from home directory is supported as well.
-      - **Usage:** `/directory add <path1>,<path2>`
-      - **Note:** Disabled in restrictive sandbox profiles. If you're using that, use `--include-directories` when starting the session instead.
-    - **`show`**:
-      - **Description:** Display all directories added by `/directory add` and `--include-directories`.
-      - **Usage:** `/directory show`
-
 - **`/editor`**
   - **Description:** Open a dialog for selecting supported editors.
 
@@ -108,6 +74,20 @@ Slash commands provide meta-level control over the CLI itself.
       - **Description:** Reload the hierarchical instructional memory from all context files (default: `QWEN.md`) found in the configured locations (global, project/ancestors, and sub-directories). This updates the model with the latest context content.
     - **Note:** For more details on how context files contribute to hierarchical memory, see the [CLI Configuration documentation](./configuration.md#context-files-hierarchical-instructional-context).
 
+- **`/model`**
+  - **Description:** Switch the model for the current session. Opens a dialog to select from available models based on your authentication type.
+  - **Usage:** `/model`
+  - **Features:**
+    - Shows a dialog with all available models for your current authentication type
+    - Displays model descriptions and capabilities (e.g., vision support)
+    - Changes the model for the current session only
+    - Supports both Qwen models (via OAuth) and OpenAI models (via API key)
+  - **Available Models:**
+    - **Qwen Coder:** The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)
+    - **Qwen Vision:** The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23) - supports image analysis
+    - **OpenAI Models:** Available when using OpenAI authentication (configured via `OPENAI_MODEL` environment variable)
+  - **Note:** Model selection is session-specific and does not persist across different Qwen Code sessions. To set a default model, use the `model.name` setting in your configuration.
+
 - **`/restore`**
   - **Description:** Restores the project files to the state they were in just before a tool was executed. This is particularly useful for undoing file edits made by a tool. If run without a tool call ID, it will list available checkpoints to restore from.
   - **Usage:** `/restore [tool_call_id]`
@@ -192,6 +172,16 @@ Slash commands provide meta-level control over the CLI itself.
 - **`/init`**
   - **Description:** Analyzes the current directory and creates a `QWEN.md` context file by default (or the filename specified by `contextFileName`). If a non-empty file already exists, no changes are made. The command seeds an empty file and prompts the model to populate it with project-specific instructions.
 
+- [**`/language`**](./language.md)
+  - **Description:** View or change the language setting for both UI and LLM output.
+  - **Sub-commands:**
+    - **`ui`**: Set the UI language (zh-CN or en-US)
+    - **`output`**: Set the LLM output language
+  - **Usage:** `/language [ui|output] [language]`
+  - **Examples:**
+    - `/language ui zh-CN` (set UI language to Simplified Chinese)
+    - `/language output English` (set LLM output language to English)
+
 ### Custom Commands
 
 For a quick start, see the [example](#example-a-pure-function-refactoring-command) below.

docs/cli/configuration-v1.md

@@ -309,7 +309,8 @@ If you are experiencing performance issues with file searching (e.g., with `@` c
     ```
 
 - **`tavilyApiKey`** (string):
-  - **Description:** API key for Tavily web search service. Required to enable the `web_search` tool functionality. If not configured, the web search tool will be disabled and skipped.
+  - **Description:** API key for Tavily web search service. Used to enable the `web_search` tool functionality.
+  - **Note:** This is a legacy configuration format. For Qwen OAuth users, DashScope provider is automatically available without any configuration. For other authentication types, configure Tavily or Google providers using the new `webSearch` configuration format.
   - **Default:** `undefined` (web search disabled)
   - **Example:** `"tavilyApiKey": "tvly-your-api-key-here"`
 - **`chatCompression`** (object):
@@ -465,8 +466,8 @@ The CLI automatically loads environment variables from an `.env` file. The loadi
   - This is useful for development and testing.
 - **`TAVILY_API_KEY`**:
   - Your API key for the Tavily web search service.
-  - Required to enable the `web_search` tool functionality.
-  - If not configured, the web search tool will be disabled and skipped.
+  - Used to enable the `web_search` tool functionality.
+  - **Note:** For Qwen OAuth users, DashScope provider is automatically available without any configuration. For other authentication types, configure Tavily or Google providers to enable web search.
   - Example: `export TAVILY_API_KEY="tvly-your-api-key-here"`
 
 ## Command-Line Arguments
@@ -540,6 +541,9 @@ Arguments passed directly when running the CLI can override other configurations
   - Displays the version of the CLI.
 - **`--openai-logging`**:
   - Enables logging of OpenAI API calls for debugging and analysis. This flag overrides the `enableOpenAILogging` setting in `settings.json`.
+- **`--openai-logging-dir <directory>`**:
+  - Sets a custom directory path for OpenAI API logs. This flag overrides the `openAILoggingDir` setting in `settings.json`. Supports absolute paths, relative paths, and `~` expansion.
+  - **Example:** `qwen --openai-logging-dir "~/qwen-logs" --openai-logging`
 - **`--tavily-api-key <api_key>`**:
   - Sets the Tavily API key for web search functionality for this session.
   - Example: `qwen --tavily-api-key tvly-your-api-key-here`
@@ -667,4 +671,4 @@ Note: When usage statistics are enabled, events are sent to an Alibaba Cloud RUM
   - **Category:** UI
   - **Requires Restart:** No
   - **Example:** `"enableWelcomeBack": false`
-  - **Details:** When enabled, Qwen Code will automatically detect if you're returning to a project with a previously generated project summary (`.qwen/PROJECT_SUMMARY.md`) and show a dialog allowing you to continue your previous conversation or start fresh. This feature integrates with the `/chat summary` command and quit confirmation dialog. See the [Welcome Back documentation](./welcome-back.md) for more details.
+  - **Details:** When enabled, Qwen Code will automatically detect if you're returning to a project with a previously generated project summary (`.qwen/PROJECT_SUMMARY.md`) and show a dialog allowing you to continue your previous conversation or start fresh. This feature integrates with the `/summary` command and quit confirmation dialog. See the [Welcome Back documentation](./welcome-back.md) for more details.

docs/cli/configuration.md

@@ -160,9 +160,30 @@ Settings are organized into categories. All settings should be placed within the
   - **Default:** `undefined`
 
 - **`model.chatCompression.contextPercentageThreshold`** (number):
-  - **Description:** Sets the threshold for chat history compression as a percentage of the model's total token limit. This is a value between 0 and 1 that applies to both automatic compression and the manual `/compress` command. For example, a value of `0.6` will trigger compression when the chat history exceeds 60% of the token limit.
+  - **Description:** Sets the threshold for chat history compression as a percentage of the model's total token limit. This is a value between 0 and 1 that applies to both automatic compression and the manual `/compress` command. For example, a value of `0.6` will trigger compression when the chat history exceeds 60% of the token limit. Use `0` to disable compression entirely.
   - **Default:** `0.7`
 
+- **`model.generationConfig`** (object):
+  - **Description:** Advanced overrides passed to the underlying content generator. Supports request controls such as `timeout`, `maxRetries`, and `disableCacheControl`, along with fine-tuning knobs under `samplingParams` (for example `temperature`, `top_p`, `max_tokens`). Leave unset to rely on provider defaults.
+  - **Default:** `undefined`
+  - **Example:**
+
+    ```json
+    {
+      "model": {
+        "generationConfig": {
+          "timeout": 60000,
+          "disableCacheControl": false,
+          "samplingParams": {
+            "temperature": 0.2,
+            "top_p": 0.8,
+            "max_tokens": 1024
+          }
+        }
+      }
+    }
+    ```
+
 - **`model.skipNextSpeakerCheck`** (boolean):
   - **Description:** Skip the next speaker check.
   - **Default:** `false`
@@ -171,6 +192,22 @@ Settings are organized into categories. All settings should be placed within the
   - **Description:** Disables loop detection checks. Loop detection prevents infinite loops in AI responses but can generate false positives that interrupt legitimate workflows. Enable this option if you experience frequent false positive loop detection interruptions.
   - **Default:** `false`
 
+- **`model.skipStartupContext`** (boolean):
+  - **Description:** Skips sending the startup workspace context (environment summary and acknowledgement) at the beginning of each session. Enable this if you prefer to provide context manually or want to save tokens on startup.
+  - **Default:** `false`
+
+- **`model.enableOpenAILogging`** (boolean):
+  - **Description:** Enables logging of OpenAI API calls for debugging and analysis. When enabled, API requests and responses are logged to JSON files.
+  - **Default:** `false`
+
+- **`model.openAILoggingDir`** (string):
+  - **Description:** Custom directory path for OpenAI API logs. If not specified, defaults to `logs/openai` in the current working directory. Supports absolute paths, relative paths (resolved from current working directory), and `~` expansion (home directory).
+  - **Default:** `undefined`
+  - **Examples:**
+    - `"~/qwen-logs"` - Logs to `~/qwen-logs` directory
+    - `"./custom-logs"` - Logs to `./custom-logs` relative to current directory
+    - `"/tmp/openai-logs"` - Logs to absolute path `/tmp/openai-logs`
+
 #### `context`
 
 - **`context.fileName`** (string or array of strings):
@@ -246,6 +283,29 @@ Settings are organized into categories. All settings should be placed within the
     - It must return function output as JSON on `stdout`, analogous to [`functionResponse.response.content`](https://cloud.google.com/vertex-ai/generative-ai/docs/model-reference/inference#functionresponse).
   - **Default:** `undefined`
 
+- **`tools.useRipgrep`** (boolean):
+  - **Description:** Use ripgrep for file content search instead of the fallback implementation. Provides faster search performance.
+  - **Default:** `true`
+
+- **`tools.useBuiltinRipgrep`** (boolean):
+  - **Description:** Use the bundled ripgrep binary. When set to `false`, the system-level `rg` command will be used instead. This setting is only effective when `tools.useRipgrep` is `true`.
+  - **Default:** `true`
+
+- **`tools.enableToolOutputTruncation`** (boolean):
+  - **Description:** Enable truncation of large tool outputs.
+  - **Default:** `true`
+  - **Requires restart:** Yes
+
+- **`tools.truncateToolOutputThreshold`** (number):
+  - **Description:** Truncate tool output if it is larger than this many characters. Applies to Shell, Grep, Glob, ReadFile and ReadManyFiles tools.
+  - **Default:** `25000`
+  - **Requires restart:** Yes
+
+- **`tools.truncateToolOutputLines`** (number):
+  - **Description:** Maximum lines or entries kept when truncating tool output. Applies to Shell, Grep, Glob, ReadFile and ReadManyFiles tools.
+  - **Default:** `1000`
+  - **Requires restart:** Yes
+
 #### `mcp`
 
 - **`mcp.serverCommand`** (string):
@@ -297,7 +357,8 @@ Settings are organized into categories. All settings should be placed within the
   - **Default:** `undefined`
 
 - **`advanced.tavilyApiKey`** (string):
-  - **Description:** API key for Tavily web search service. Required to enable the `web_search` tool functionality. If not configured, the web search tool will be disabled and skipped.
+  - **Description:** API key for Tavily web search service. Used to enable the `web_search` tool functionality.
+  - **Note:** This is a legacy configuration format. For Qwen OAuth users, DashScope provider is automatically available without any configuration. For other authentication types, configure Tavily or Google providers using the new `webSearch` configuration format.
   - **Default:** `undefined`
 
 #### `mcpServers`
@@ -378,6 +439,8 @@ Here is an example of a `settings.json` file with the nested structure, new as o
   "model": {
     "name": "qwen3-coder-plus",
     "maxSessionTurns": 10,
+    "enableOpenAILogging": false,
+    "openAILoggingDir": "~/qwen-logs",
     "summarizeToolOutput": {
       "run_shell_command": {
         "tokenBudget": 100
@@ -466,8 +529,8 @@ The CLI automatically loads environment variables from an `.env` file. The loadi
   - Set to a string to customize the title of the CLI.
 - **`TAVILY_API_KEY`**:
   - Your API key for the Tavily web search service.
-  - Required to enable the `web_search` tool functionality.
-  - If not configured, the web search tool will be disabled and skipped.
+  - Used to enable the `web_search` tool functionality.
+  - **Note:** For Qwen OAuth users, DashScope provider is automatically available without any configuration. For other authentication types, configure Tavily or Google providers to enable web search.
   - Example: `export TAVILY_API_KEY="tvly-your-api-key-here"`
 
 ## Command-Line Arguments
@@ -485,12 +548,31 @@ Arguments passed directly when running the CLI can override other configurations
   - The prompt is processed within the interactive session, not before it.
   - Cannot be used when piping input from stdin.
   - Example: `qwen -i "explain this code"`
-- **`--output-format <format>`**:
+- **`--continue`**:
+  - Resume the most recent session for the current project (current working directory).
+  - Works in interactive and headless modes (e.g., `qwen --continue -p "Keep going"`).
+- **`--resume [sessionId]`**:
+  - Resume a specific session for the current project. When called without an ID, an interactive picker lists only this project's sessions with prompt preview, timestamps, message count, and optional git branch.
+  - If an ID is provided and not found for this project, the CLI exits with an error.
+- **`--output-format <format>`** (**`-o <format>`**):
   - **Description:** Specifies the format of the CLI output for non-interactive mode.
   - **Values:**
     - `text`: (Default) The standard human-readable output.
-    - `json`: A machine-readable JSON output.
-  - **Note:** For structured output and scripting, use the `--output-format json` flag.
+    - `json`: A machine-readable JSON output emitted at the end of execution.
+    - `stream-json`: Streaming JSON messages emitted as they occur during execution.
+  - **Note:** For structured output and scripting, use the `--output-format json` or `--output-format stream-json` flag. See [Headless Mode](../features/headless.md) for detailed information.
+- **`--input-format <format>`**:
+  - **Description:** Specifies the format consumed from standard input.
+  - **Values:**
+    - `text`: (Default) Standard text input from stdin or command-line arguments.
+    - `stream-json`: JSON message protocol via stdin for bidirectional communication.
+  - **Requirement:** `--input-format stream-json` requires `--output-format stream-json` to be set.
+  - **Note:** When using `stream-json`, stdin is reserved for protocol messages. See [Headless Mode](../features/headless.md) for detailed information.
+- **`--include-partial-messages`**:
+  - **Description:** Include partial assistant messages when using `stream-json` output format. When enabled, emits stream events (message_start, content_block_delta, etc.) as they occur during streaming.
+  - **Default:** `false`
+  - **Requirement:** Requires `--output-format stream-json` to be set.
+  - **Note:** See [Headless Mode](../features/headless.md) for detailed information about stream events.
 - **`--sandbox`** (**`-s`**):
   - Enables sandbox mode for this session.
 - **`--sandbox-image`**:
@@ -515,7 +597,7 @@ Arguments passed directly when running the CLI can override other configurations
   - Example: `qwen --approval-mode auto-edit`
 - **`--allowed-tools <tool1,tool2,...>`**:
   - A comma-separated list of tool names that will bypass the confirmation dialog.
-  - Example: `qwen --allowed-tools "ShellTool(git status)"`
+  - Example: `qwen --allowed-tools "Shell(git status)"`
 - **`--telemetry`**:
   - Enables [telemetry](../telemetry.md).
 - **`--telemetry-target`**:
@@ -548,6 +630,9 @@ Arguments passed directly when running the CLI can override other configurations
   - Displays the version of the CLI.
 - **`--openai-logging`**:
   - Enables logging of OpenAI API calls for debugging and analysis. This flag overrides the `enableOpenAILogging` setting in `settings.json`.
+- **`--openai-logging-dir <directory>`**:
+  - Sets a custom directory path for OpenAI API logs. This flag overrides the `openAILoggingDir` setting in `settings.json`. Supports absolute paths, relative paths, and `~` expansion.
+  - **Example:** `qwen --openai-logging-dir "~/qwen-logs" --openai-logging`
 - **`--tavily-api-key <api_key>`**:
   - Sets the Tavily API key for web search functionality for this session.
   - Example: `qwen --tavily-api-key tvly-your-api-key-here`

docs/cli/language.md

@@ -0,0 +1,71 @@
+# Language Command
+
+The `/language` command allows you to customize the language settings for both the Qwen Code user interface (UI) and the language model's output. This command supports two distinct functionalities:
+
+1. Setting the UI language for the Qwen Code interface
+2. Setting the output language for the language model (LLM)
+
+## UI Language Settings
+
+To change the UI language of Qwen Code, use the `ui` subcommand:
+
+```
+/language ui [zh-CN|en-US]
+```
+
+### Available UI Languages
+
+- **zh-CN**: Simplified Chinese (简体中文)
+- **en-US**: English
+
+### Examples
+
+```
+/language ui zh-CN    # Set UI language to Simplified Chinese
+/language ui en-US    # Set UI language to English
+```
+
+### UI Language Subcommands
+
+You can also use direct subcommands for convenience:
+
+- `/language ui zh-CN` or `/language ui zh` or `/language ui 中文`
+- `/language ui en-US` or `/language ui en` or `/language ui english`
+
+## LLM Output Language Settings
+
+To set the language for the language model's responses, use the `output` subcommand:
+
+```
+/language output <language>
+```
+
+This command generates a language rule file that instructs the LLM to respond in the specified language. The rule file is saved to `~/.qwen/output-language.md`.
+
+### Examples
+
+```
+/language output 中文      # Set LLM output language to Chinese
+/language output English   # Set LLM output language to English
+/language output 日本語    # Set LLM output language to Japanese
+```
+
+## Viewing Current Settings
+
+When used without arguments, the `/language` command displays the current language settings:
+
+```
+/language
+```
+
+This will show:
+
+- Current UI language
+- Current LLM output language (if set)
+- Available subcommands
+
+## Notes
+
+- UI language changes take effect immediately and reload all command descriptions
+- LLM output language settings are persisted in a rule file that is automatically included in the model's context
+- To request additional UI language packs, please open an issue on GitHub

docs/core/tools-api.md

@@ -21,7 +21,7 @@ The Qwen Code core (`packages/core`) features a robust system for defining, regi
 - **Returning Rich Content:** Tools are not limited to returning simple text. The `llmContent` can be a `PartListUnion`, which is an array that can contain a mix of `Part` objects (for images, audio, etc.) and `string`s. This allows a single tool execution to return multiple pieces of rich content.
 
 - **Tool Registry (`tool-registry.ts`):** A class (`ToolRegistry`) responsible for:
-  - **Registering Tools:** Holding a collection of all available built-in tools (e.g., `ReadFileTool`, `ShellTool`).
+  - **Registering Tools:** Holding a collection of all available built-in tools (e.g., `ListFiles`, `ReadFile`).
   - **Discovering Tools:** It can also discover tools dynamically:
     - **Command-based Discovery:** If `tools.toolDiscoveryCommand` is configured in settings, this command is executed. It's expected to output JSON describing custom tools, which are then registered as `DiscoveredTool` instances.
     - **MCP-based Discovery:** If `mcp.mcpServerCommand` is configured, the registry can connect to a Model Context Protocol (MCP) server to list and register tools (`DiscoveredMCPTool`).
@@ -33,20 +33,24 @@ The Qwen Code core (`packages/core`) features a robust system for defining, regi
 The core comes with a suite of pre-defined tools, typically found in `packages/core/src/tools/`. These include:
 
 - **File System Tools:**
-  - `LSTool` (`ls.ts`): Lists directory contents.
-  - `ReadFileTool` (`read-file.ts`): Reads the content of a single file. It takes an `absolute_path` parameter, which must be an absolute path.
-  - `WriteFileTool` (`write-file.ts`): Writes content to a file.
-  - `GrepTool` (`grep.ts`): Searches for patterns in files.
-  - `GlobTool` (`glob.ts`): Finds files matching glob patterns.
-  - `EditTool` (`edit.ts`): Performs in-place modifications to files (often requiring confirmation).
-  - `ReadManyFilesTool` (`read-many-files.ts`): Reads and concatenates content from multiple files or glob patterns (used by the `@` command in CLI).
+  - `ListFiles` (`ls.ts`): Lists directory contents.
+  - `ReadFile` (`read-file.ts`): Reads the content of a single file. It takes an `absolute_path` parameter, which must be an absolute path.
+  - `WriteFile` (`write-file.ts`): Writes content to a file.
+  - `ReadManyFiles` (`read-many-files.ts`): Reads and concatenates content from multiple files or glob patterns (used by the `@` command in CLI).
+  - `Grep` (`grep.ts`): Searches for patterns in files.
+  - `Glob` (`glob.ts`): Finds files matching glob patterns.
+  - `Edit` (`edit.ts`): Performs in-place modifications to files (often requiring confirmation).
 - **Execution Tools:**
-  - `ShellTool` (`shell.ts`): Executes arbitrary shell commands (requires careful sandboxing and user confirmation).
+  - `Shell` (`shell.ts`): Executes arbitrary shell commands (requires careful sandboxing and user confirmation).
 - **Web Tools:**
-  - `WebFetchTool` (`web-fetch.ts`): Fetches content from a URL.
-  - `WebSearchTool` (`web-search.ts`): Performs a web search.
+  - `WebFetch` (`web-fetch.ts`): Fetches content from a URL.
+  - `WebSearch` (`web-search.ts`): Performs a web search.
 - **Memory Tools:**
-  - `MemoryTool` (`memoryTool.ts`): Interacts with the AI's memory.
+  - `SaveMemory` (`memoryTool.ts`): Interacts with the AI's memory.
+- **Planning Tools:**
+  - `Task` (`task.ts`): Delegates tasks to specialized subagents.
+  - `TodoWrite` (`todoWrite.ts`): Creates and manages a structured task list.
+  - `ExitPlanMode` (`exitPlanMode.ts`): Exits plan mode and returns to normal operation.
 
 Each of these tools extends `BaseTool` and implements the required methods for its specific functionality.
 

docs/extensions/extension.md

@@ -107,7 +107,7 @@ The `qwen-extension.json` file contains the configuration for the extension. The
 - `mcpServers`: A map of MCP servers to configure. The key is the name of the server, and the value is the server configuration. These servers will be loaded on startup just like MCP servers configured in a [`settings.json` file](./cli/configuration.md). If both an extension and a `settings.json` file configure an MCP server with the same name, the server defined in the `settings.json` file takes precedence.
   - Note that all MCP server configuration options are supported except for `trust`.
 - `contextFileName`: The name of the file that contains the context for the extension. This will be used to load the context from the extension directory. If this property is not used but a `QWEN.md` file is present in your extension directory, then that file will be loaded.
-- `excludeTools`: An array of tool names to exclude from the model. You can also specify command-specific restrictions for tools that support it, like the `run_shell_command` tool. For example, `"excludeTools": ["run_shell_command(rm -rf)"]` will block the `rm -rf` command. Note that this differs from the MCP server `excludeTools` functionality, which can be listed in the MCP server config.
+- `excludeTools`: An array of tool names to exclude from the model. You can also specify command-specific restrictions for tools that support it, like the `run_shell_command` tool. For example, `"excludeTools": ["run_shell_command(rm -rf)"]` will block the `rm -rf` command. Note that this differs from the MCP server `excludeTools` functionality, which can be listed in the MCP server config. **Important:** Tools specified in `excludeTools` will be disabled for the entire conversation context and will affect all subsequent queries in the current session.
 
 When Qwen Code starts, it loads all the extensions and merges their configurations. If there are any conflicts, the workspace configuration takes precedence.
 

docs/features/_meta.ts

@@ -2,7 +2,7 @@ export default {
   subagents: 'Subagents',
   checkpointing: 'Checkpointing',
   sandbox: 'Sandbox Support',
-  'headless-mode': 'Headless Mode',
+  headless: 'Headless Mode',
   'welcome-back': 'Welcome Back',
   'token-caching': 'Token Caching',
 };

docs/features/headless.md

@@ -13,8 +13,9 @@ scripting, automation, CI/CD pipelines, and building AI-powered tools.
   - [Output Formats](#output-formats)
     - [Text Output (Default)](#text-output-default)
     - [JSON Output](#json-output)
-      - [Response Schema](#response-schema)
       - [Example Usage](#example-usage)
+    - [Stream-JSON Output](#stream-json-output)
+    - [Input Format](#input-format)
     - [File Redirection](#file-redirection)
   - [Configuration Options](#configuration-options)
   - [Examples](#examples)
@@ -22,7 +23,7 @@ scripting, automation, CI/CD pipelines, and building AI-powered tools.
     - [Generate commit messages](#generate-commit-messages)
     - [API documentation](#api-documentation)
     - [Batch code analysis](#batch-code-analysis)
-    - [Code review](#code-review-1)
+    - [PR code review](#pr-code-review)
     - [Log analysis](#log-analysis)
     - [Release notes generation](#release-notes-generation)
     - [Model and tool usage tracking](#model-and-tool-usage-tracking)
@@ -37,6 +38,7 @@ The headless mode provides a headless interface to Qwen Code that:
 - Supports file redirection and piping
 - Enables automation and scripting workflows
 - Provides consistent exit codes for error handling
+- Can resume previous sessions scoped to the current project for multi-step automation
 
 ## Basic Usage
 
@@ -64,8 +66,27 @@ Read from files and process with Qwen Code:
 cat README.md | qwen --prompt "Summarize this documentation"
 ```
 
+### Resume Previous Sessions (Headless)
+
+Reuse conversation context from the current project in headless scripts:
+
+```bash
+# Continue the most recent session for this project and run a new prompt
+qwen --continue -p "Run the tests again and summarize failures"
+
+# Resume a specific session ID directly (no UI)
+qwen --resume 123e4567-e89b-12d3-a456-426614174000 -p "Apply the follow-up refactor"
+```
+
+Notes:
+
+- Session data is project-scoped JSONL under `~/.qwen/projects/<sanitized-cwd>/chats`.
+- Restores conversation history, tool outputs, and chat-compression checkpoints before sending the new prompt.
+
 ## Output Formats
 
+Qwen Code supports multiple output formats for different use cases:
+
 ### Text Output (Default)
 
 Standard human-readable output:
@@ -82,56 +103,9 @@ The capital of France is Paris.
 
 ### JSON Output
 
-Returns structured data including response, statistics, and metadata. This
-format is ideal for programmatic processing and automation scripts.
+Returns structured data as a JSON array. All messages are buffered and output together when the session completes. This format is ideal for programmatic processing and automation scripts.
 
-#### Response Schema
-
-The JSON output follows this high-level structure:
-
-```json
-{
-  "response": "string", // The main AI-generated content answering your prompt
-  "stats": {
-    // Usage metrics and performance data
-    "models": {
-      // Per-model API and token usage statistics
-      "[model-name]": {
-        "api": {
-          /* request counts, errors, latency */
-        },
-        "tokens": {
-          /* prompt, response, cached, total counts */
-        }
-      }
-    },
-    "tools": {
-      // Tool execution statistics
-      "totalCalls": "number",
-      "totalSuccess": "number",
-      "totalFail": "number",
-      "totalDurationMs": "number",
-      "totalDecisions": {
-        /* accept, reject, modify, auto_accept counts */
-      },
-      "byName": {
-        /* per-tool detailed stats */
-      }
-    },
-    "files": {
-      // File modification statistics
-      "totalLinesAdded": "number",
-      "totalLinesRemoved": "number"
-    }
-  },
-  "error": {
-    // Present only when an error occurred
-    "type": "string", // Error type (e.g., "ApiError", "AuthError")
-    "message": "string", // Human-readable error description
-    "code": "number" // Optional error code
-  }
-}
-```
+The JSON output is an array of message objects. The output includes multiple message types: system messages (session initialization), assistant messages (AI responses), and result messages (execution summary).
 
 #### Example Usage
 
@@ -139,63 +113,81 @@ The JSON output follows this high-level structure:
 qwen -p "What is the capital of France?" --output-format json
 ```
 
-Response:
+Output (at end of execution):
 
 ```json
-{
-  "response": "The capital of France is Paris.",
-  "stats": {
-    "models": {
-      "qwen3-coder-plus": {
-        "api": {
-          "totalRequests": 2,
-          "totalErrors": 0,
-          "totalLatencyMs": 5053
-        },
-        "tokens": {
-          "prompt": 24939,
-          "candidates": 20,
-          "total": 25113,
-          "cached": 21263,
-          "thoughts": 154,
-          "tool": 0
+[
+  {
+    "type": "system",
+    "subtype": "session_start",
+    "uuid": "...",
+    "session_id": "...",
+    "model": "qwen3-coder-plus",
+    ...
+  },
+  {
+    "type": "assistant",
+    "uuid": "...",
+    "session_id": "...",
+    "message": {
+      "id": "...",
+      "type": "message",
+      "role": "assistant",
+      "model": "qwen3-coder-plus",
+      "content": [
+        {
+          "type": "text",
+          "text": "The capital of France is Paris."
         }
-      }
+      ],
+      "usage": {...}
     },
-    "tools": {
-      "totalCalls": 1,
-      "totalSuccess": 1,
-      "totalFail": 0,
-      "totalDurationMs": 1881,
-      "totalDecisions": {
-        "accept": 0,
-        "reject": 0,
-        "modify": 0,
-        "auto_accept": 1
-      },
-      "byName": {
-        "google_web_search": {
-          "count": 1,
-          "success": 1,
-          "fail": 0,
-          "durationMs": 1881,
-          "decisions": {
-            "accept": 0,
-            "reject": 0,
-            "modify": 0,
-            "auto_accept": 1
-          }
-        }
-      }
-    },
-    "files": {
-      "totalLinesAdded": 0,
-      "totalLinesRemoved": 0
-    }
+    "parent_tool_use_id": null
+  },
+  {
+    "type": "result",
+    "subtype": "success",
+    "uuid": "...",
+    "session_id": "...",
+    "is_error": false,
+    "duration_ms": 1234,
+    "result": "The capital of France is Paris.",
+    "usage": {...}
   }
-}
+]
 ```
 
+### Stream-JSON Output
+
+Stream-JSON format emits JSON messages immediately as they occur during execution, enabling real-time monitoring. This format uses line-delimited JSON where each message is a complete JSON object on a single line.
+
+```bash
+qwen -p "Explain TypeScript" --output-format stream-json
+```
+
+Output (streaming as events occur):
+
+```json
+{"type":"system","subtype":"session_start","uuid":"...","session_id":"..."}
+{"type":"assistant","uuid":"...","session_id":"...","message":{...}}
+{"type":"result","subtype":"success","uuid":"...","session_id":"..."}
+```
+
+When combined with `--include-partial-messages`, additional stream events are emitted in real-time (message_start, content_block_delta, etc.) for real-time UI updates.
+
+```bash
+qwen -p "Write a Python script" --output-format stream-json --include-partial-messages
+```
+
+### Input Format
+
+The `--input-format` parameter controls how Qwen Code consumes input from standard input:
+
+- **`text`** (default): Standard text input from stdin or command-line arguments
+- **`stream-json`**: JSON message protocol via stdin for bidirectional communication
+
+> **Note:** Stream-json input mode is currently under construction and is intended for SDK integration. It requires `--output-format stream-json` to be set.
+
 ### File Redirection
 
 Save output to files or pipe to other commands:
@@ -212,48 +204,55 @@ qwen -p "Add more details" >> docker-explanation.txt
 qwen -p "What is Kubernetes?" --output-format json | jq '.response'
 qwen -p "Explain microservices" | wc -w
 qwen -p "List programming languages" | grep -i "python"
+
+# Stream-JSON output for real-time processing
+qwen -p "Explain Docker" --output-format stream-json | jq '.type'
+qwen -p "Write code" --output-format stream-json --include-partial-messages | jq '.event.type'
 ```
 
 ## Configuration Options
 
 Key command-line options for headless usage:
 
-| Option                  | Description                        | Example                                          |
-| ----------------------- | ---------------------------------- | ------------------------------------------------ |
-| `--prompt`, `-p`        | Run in headless mode               | `qwen -p "query"`                                |
-| `--output-format`       | Specify output format (text, json) | `qwen -p "query" --output-format json`           |
-| `--model`, `-m`         | Specify the Qwen model             | `qwen -p "query" -m qwen3-coder-plus`            |
-| `--debug`, `-d`         | Enable debug mode                  | `qwen -p "query" --debug`                        |
-| `--all-files`, `-a`     | Include all files in context       | `qwen -p "query" --all-files`                    |
-| `--include-directories` | Include additional directories     | `qwen -p "query" --include-directories src,docs` |
-| `--yolo`, `-y`          | Auto-approve all actions           | `qwen -p "query" --yolo`                         |
-| `--approval-mode`       | Set approval mode                  | `qwen -p "query" --approval-mode auto_edit`      |
+| Option                       | Description                                         | Example                                                                  |
+| ---------------------------- | --------------------------------------------------- | ------------------------------------------------------------------------ |
+| `--prompt`, `-p`             | Run in headless mode                                | `qwen -p "query"`                                                        |
+| `--output-format`, `-o`      | Specify output format (text, json, stream-json)     | `qwen -p "query" --output-format json`                                   |
+| `--input-format`             | Specify input format (text, stream-json)            | `qwen --input-format text --output-format stream-json`                   |
+| `--include-partial-messages` | Include partial messages in stream-json output      | `qwen -p "query" --output-format stream-json --include-partial-messages` |
+| `--debug`, `-d`              | Enable debug mode                                   | `qwen -p "query" --debug`                                                |
+| `--all-files`, `-a`          | Include all files in context                        | `qwen -p "query" --all-files`                                            |
+| `--include-directories`      | Include additional directories                      | `qwen -p "query" --include-directories src,docs`                         |
+| `--yolo`, `-y`               | Auto-approve all actions                            | `qwen -p "query" --yolo`                                                 |
+| `--approval-mode`            | Set approval mode                                   | `qwen -p "query" --approval-mode auto_edit`                              |
+| `--continue`                 | Resume the most recent session for this project     | `qwen --continue -p "Pick up where we left off"`                         |
+| `--resume [sessionId]`       | Resume a specific session (or choose interactively) | `qwen --resume 123e... -p "Finish the refactor"`                         |
 
 For complete details on all available configuration options, settings files, and environment variables, see the [Configuration Guide](./cli/configuration.md).
 
 ## Examples
 
-#### Code review
+### Code review
 
 ```bash
 cat src/auth.py | qwen -p "Review this authentication code for security issues" > security-review.txt
 ```
 
-#### Generate commit messages
+### Generate commit messages
 
 ```bash
 result=$(git diff --cached | qwen -p "Write a concise commit message for these changes" --output-format json)
 echo "$result" | jq -r '.response'
 ```
 
-#### API documentation
+### API documentation
 
 ```bash
 result=$(cat api/routes.js | qwen -p "Generate OpenAPI spec for these routes" --output-format json)
 echo "$result" | jq -r '.response' > openapi.json
 ```
 
-#### Batch code analysis
+### Batch code analysis
 
 ```bash
 for file in src/*.py; do
@@ -264,20 +263,20 @@ for file in src/*.py; do
 done
 ```
 
-#### Code review
+### PR code review
 
 ```bash
 result=$(git diff origin/main...HEAD | qwen -p "Review these changes for bugs, security issues, and code quality" --output-format json)
 echo "$result" | jq -r '.response' > pr-review.json
 ```
 
-#### Log analysis
+### Log analysis
 
 ```bash
 grep "ERROR" /var/log/app.log | tail -20 | qwen -p "Analyze these errors and suggest root cause and fixes" > error-analysis.txt
 ```
 
-#### Release notes generation
+### Release notes generation
 
 ```bash
 result=$(git log --oneline v1.0.0..HEAD | qwen -p "Generate release notes from these commits" --output-format json)
@@ -286,7 +285,7 @@ echo "$response"
 echo "$response" >> CHANGELOG.md
 ```
 
-#### Model and tool usage tracking
+### Model and tool usage tracking
 
 ```bash
 result=$(qwen -p "Explain this database schema" --include-directories db --output-format json)

docs/features/subagents.md

@@ -106,7 +106,10 @@ Subagents are configured using Markdown files with YAML frontmatter. This format
 ---
 name: agent-name
 description: Brief description of when and how to use this agent
-tools: tool1, tool2, tool3 # Optional
+tools:
+  - tool1
+  - tool2
+  - tool3 # Optional
 ---
 
 System prompt content goes here.
@@ -167,7 +170,11 @@ Perfect for comprehensive test creation and test-driven development.
 ---
 name: testing-expert
 description: Writes comprehensive unit tests, integration tests, and handles test automation with best practices
-tools: read_file, write_file, read_many_files, run_shell_command
+tools:
+  - read_file
+  - write_file
+  - read_many_files
+  - run_shell_command
 ---
 
 You are a testing specialist focused on creating high-quality, maintainable tests.
@@ -207,7 +214,11 @@ Specialized in creating clear, comprehensive documentation.
 ---
 name: documentation-writer
 description: Creates comprehensive documentation, README files, API docs, and user guides
-tools: read_file, write_file, read_many_files, web_search
+tools:
+  - read_file
+  - write_file
+  - read_many_files
+  - web_search
 ---
 
 You are a technical documentation specialist for ${project_name}.
@@ -256,7 +267,9 @@ Focused on code quality, security, and best practices.
 ---
 name: code-reviewer
 description: Reviews code for best practices, security issues, performance, and maintainability
-tools: read_file, read_many_files
+tools:
+  - read_file
+  - read_many_files
 ---
 
 You are an experienced code reviewer focused on quality, security, and maintainability.
@@ -298,7 +311,11 @@ Optimized for React development, hooks, and component patterns.
 ---
 name: react-specialist
 description: Expert in React development, hooks, component patterns, and modern React best practices
-tools: read_file, write_file, read_many_files, run_shell_command
+tools:
+  - read_file
+  - write_file
+  - read_many_files
+  - run_shell_command
 ---
 
 You are a React specialist with deep expertise in modern React development.
@@ -339,7 +356,11 @@ Specialized in Python development, frameworks, and best practices.
 ---
 name: python-expert
 description: Expert in Python development, frameworks, testing, and Python-specific best practices
-tools: read_file, write_file, read_many_files, run_shell_command
+tools:
+  - read_file
+  - write_file
+  - read_many_files
+  - run_shell_command
 ---
 
 You are a Python expert with deep knowledge of the Python ecosystem.

docs/features/welcome-back.md

@@ -75,9 +75,9 @@ Add to your `.qwen/settings.json`:
 
 ### Project Summary Generation
 
-The Welcome Back feature works seamlessly with the `/chat summary` command:
+The Welcome Back feature works seamlessly with the `/summary` command:
 
-1. **Generate Summary:** Use `/chat summary` to create a project summary
+1. **Generate Summary:** Use `/summary` to create a project summary
 2. **Automatic Detection:** Next time you start Qwen Code in this project, Welcome Back will detect the summary
 3. **Resume Work:** Choose to continue and the summary will be loaded as context
 

docs/index.md

@@ -72,7 +72,7 @@ Create or edit `.qwen/settings.json` in your home directory:
 #### Session Commands
 
 - **`/compress`** - Compress conversation history to continue within token limits
-- **`/clear`** - Clear all conversation history and start fresh
+- **`/clear`** (aliases: `/reset`, `/new`) - Clear conversation history, start a fresh session, and free up context
 - **`/stats`** - Check current token usage and limits
 
 > 📝 **Note**: Session token limit applies to a single conversation, not cumulative API calls.
@@ -332,7 +332,7 @@ qwen
 ### Session Commands
 
 - `/help` - Display available commands
-- `/clear` - Clear conversation history
+- `/clear` (aliases: `/reset`, `/new`) - Clear conversation history and start a fresh session
 - `/compress` - Compress history to save tokens
 - `/stats` - Show current session information
 - `/exit` or `/quit` - Exit Qwen Code

docs/support/troubleshooting.md

@@ -14,6 +14,13 @@ This guide provides solutions to common issues and debugging tips, including top
   - **Solution:** Set the `NODE_EXTRA_CA_CERTS` environment variable to the absolute path of your corporate root CA certificate file.
     - Example: `export NODE_EXTRA_CA_CERTS=/path/to/your/corporate-ca.crt`
 
+- **Issue: Unable to display UI after authentication failure**
+  - **Cause:** If authentication fails after selecting an authentication type, the `security.auth.selectedType` setting may be persisted in `settings.json`. On restart, the CLI may get stuck trying to authenticate with the failed auth type and fail to display the UI.
+  - **Solution:** Clear the `security.auth.selectedType` configuration item in your `settings.json` file:
+    - Open `~/.qwen/settings.json` (or `./.qwen/settings.json` for project-specific settings)
+    - Remove the `security.auth.selectedType` field
+    - Restart the CLI to allow it to prompt for authentication again
+
 ## Frequently asked questions (FAQs)
 
 - **Q: How do I update Qwen Code to the latest version?**

docs/tools/file-system.md

@@ -4,12 +4,12 @@ Qwen Code provides a comprehensive suite of tools for interacting with the local
 
 **Note:** All file system tools operate within a `rootDirectory` (usually the current working directory where you launched the CLI) for security. Paths that you provide to these tools are generally expected to be absolute or are resolved relative to this root directory.
 
-## 1. `list_directory` (ReadFolder)
+## 1. `list_directory` (ListFiles)
 
 `list_directory` lists the names of files and subdirectories directly within a specified directory path. It can optionally ignore entries matching provided glob patterns.
 
 - **Tool name:** `list_directory`
-- **Display name:** ReadFolder
+- **Display name:** ListFiles
 - **File:** `ls.ts`
 - **Parameters:**
   - `path` (string, required): The absolute path to the directory to list.
@@ -59,86 +59,80 @@ Qwen Code provides a comprehensive suite of tools for interacting with the local
 - **Output (`llmContent`):** A success message, e.g., `Successfully overwrote file: /path/to/your/file.txt` or `Successfully created and wrote to new file: /path/to/new/file.txt`.
 - **Confirmation:** Yes. Shows a diff of changes and asks for user approval before writing.
 
-## 4. `glob` (FindFiles)
+## 4. `glob` (Glob)
 
 `glob` finds files matching specific glob patterns (e.g., `src/**/*.ts`, `*.md`), returning absolute paths sorted by modification time (newest first).
 
 - **Tool name:** `glob`
-- **Display name:** FindFiles
+- **Display name:** Glob
 - **File:** `glob.ts`
 - **Parameters:**
   - `pattern` (string, required): The glob pattern to match against (e.g., `"*.py"`, `"src/**/*.js"`).
-  - `path` (string, optional): The absolute path to the directory to search within. If omitted, searches the tool's root directory.
-  - `case_sensitive` (boolean, optional): Whether the search should be case-sensitive. Defaults to `false`.
-  - `respect_git_ignore` (boolean, optional): Whether to respect .gitignore patterns when finding files. Defaults to `true`.
+  - `path` (string, optional): The directory to search in. If not specified, the current working directory will be used.
 - **Behavior:**
   - Searches for files matching the glob pattern within the specified directory.
   - Returns a list of absolute paths, sorted with the most recently modified files first.
-  - Ignores common nuisance directories like `node_modules` and `.git` by default.
-- **Output (`llmContent`):** A message like: `Found 5 file(s) matching "*.ts" within src, sorted by modification time (newest first):\nsrc/file1.ts\nsrc/subdir/file2.ts...`
+  - Respects .gitignore and .qwenignore patterns by default.
+  - Limits results to 100 files to prevent context overflow.
+- **Output (`llmContent`):** A message like: `Found 5 file(s) matching "*.ts" within /path/to/search/dir, sorted by modification time (newest first):\n---\n/path/to/file1.ts\n/path/to/subdir/file2.ts\n---\n[95 files truncated] ...`
 - **Confirmation:** No.
 
-## 5. `search_file_content` (SearchText)
+## 5. `grep_search` (Grep)
 
-`search_file_content` searches for a regular expression pattern within the content of files in a specified directory. Can filter files by a glob pattern. Returns the lines containing matches, along with their file paths and line numbers.
+`grep_search` searches for a regular expression pattern within the content of files in a specified directory. Can filter files by a glob pattern. Returns the lines containing matches, along with their file paths and line numbers.
 
-- **Tool name:** `search_file_content`
-- **Display name:** SearchText
-- **File:** `grep.ts`
+- **Tool name:** `grep_search`
+- **Display name:** Grep
+- **File:** `ripGrep.ts` (with `grep.ts` as fallback)
 - **Parameters:**
-  - `pattern` (string, required): The regular expression (regex) to search for (e.g., `"function\s+myFunction"`).
-  - `path` (string, optional): The absolute path to the directory to search within. Defaults to the current working directory.
-  - `include` (string, optional): A glob pattern to filter which files are searched (e.g., `"*.js"`, `"src/**/*.{ts,tsx}"`). If omitted, searches most files (respecting common ignores).
-  - `maxResults` (number, optional): Maximum number of matches to return to prevent context overflow (default: 20, max: 100). Use lower values for broad searches, higher for specific searches.
+  - `pattern` (string, required): The regular expression pattern to search for in file contents (e.g., `"function\\s+myFunction"`, `"log.*Error"`).
+  - `path` (string, optional): File or directory to search in. Defaults to current working directory.
+  - `glob` (string, optional): Glob pattern to filter files (e.g. `"*.js"`, `"src/**/*.{ts,tsx}"`).
+  - `limit` (number, optional): Limit output to first N matching lines. Optional - shows all matches if not specified.
 - **Behavior:**
-  - Uses `git grep` if available in a Git repository for speed; otherwise, falls back to system `grep` or a JavaScript-based search.
-  - Returns a list of matching lines, each prefixed with its file path (relative to the search directory) and line number.
-  - Limits results to a maximum of 20 matches by default to prevent context overflow. When results are truncated, shows a clear warning with guidance on refining searches.
+  - Uses ripgrep for fast search when available; otherwise falls back to a JavaScript-based search implementation.
+  - Returns matching lines with file paths and line numbers.
+  - Case-insensitive by default.
+  - Respects .gitignore and .qwenignore patterns.
+  - Limits output to prevent context overflow.
 - **Output (`llmContent`):** A formatted string of matches, e.g.:
 
   ```
   Found 3 matches for pattern "myFunction" in path "." (filter: "*.ts"):
   ---
-  File: src/utils.ts
-  L15: export function myFunction() {
-  L22:   myFunction.call();
-  ---
-  File: src/index.ts
-  L5: import { myFunction } from './utils';
+  src/utils.ts:15:export function myFunction() {
+  src/utils.ts:22:  myFunction.call();
+  src/index.ts:5:import { myFunction } from './utils';
   ---
 
-  WARNING: Results truncated to prevent context overflow. To see more results:
-  - Use a more specific pattern to reduce matches
-  - Add file filters with the 'include' parameter (e.g., "*.js", "src/**")
-  - Specify a narrower 'path' to search in a subdirectory
-  - Increase 'maxResults' parameter if you need more matches (current: 20)
+  [0 lines truncated] ...
   ```
 
 - **Confirmation:** No.
 
-### `search_file_content` examples
+### `grep_search` examples
 
 Search for a pattern with default result limiting:
 
 ```
-search_file_content(pattern="function\s+myFunction", path="src")
+grep_search(pattern="function\\s+myFunction", path="src")
 ```
 
 Search for a pattern with custom result limiting:
 
 ```
-search_file_content(pattern="function", path="src", maxResults=50)
+grep_search(pattern="function", path="src", limit=50)
 ```
 
 Search for a pattern with file filtering and custom result limiting:
 
 ```
-search_file_content(pattern="function", include="*.js", maxResults=10)
+grep_search(pattern="function", glob="*.js", limit=10)
 ```
 
 ## 6. `edit` (Edit)
 
-`edit` replaces text within a file. By default, replaces a single occurrence, but can replace multiple occurrences when `expected_replacements` is specified. This tool is designed for precise, targeted changes and requires significant context around the `old_string` to ensure it modifies the correct location.
+`edit` replaces text within a file. By default it requires `old_string` to match a single unique location; set `replace_all` to `true` when you intentionally want to change every occurrence. This tool is designed for precise, targeted changes and requires significant context around the `old_string` to ensure it modifies the correct location.
 
 - **Tool name:** `edit`
 - **Display name:** Edit
@@ -150,12 +144,12 @@ search_file_content(pattern="function", include="*.js", maxResults=10)
     **CRITICAL:** This string must uniquely identify the single instance to change. It should include at least 3 lines of context _before_ and _after_ the target text, matching whitespace and indentation precisely. If `old_string` is empty, the tool attempts to create a new file at `file_path` with `new_string` as content.
 
   - `new_string` (string, required): The exact literal text to replace `old_string` with.
-  - `expected_replacements` (number, optional): The number of occurrences to replace. Defaults to `1`.
+  - `replace_all` (boolean, optional): Replace all occurrences of `old_string`. Defaults to `false`.
 
 - **Behavior:**
   - If `old_string` is empty and `file_path` does not exist, creates a new file with `new_string` as content.
-  - If `old_string` is provided, it reads the `file_path` and attempts to find exactly one occurrence of `old_string`.
-  - If one occurrence is found, it replaces it with `new_string`.
+  - If `old_string` is provided, it reads the `file_path` and attempts to find exactly one occurrence unless `replace_all` is true.
+  - If the match is unique (or `replace_all` is true), it replaces the text with `new_string`.
   - **Enhanced Reliability (Multi-Stage Edit Correction):** To significantly improve the success rate of edits, especially when the model-provided `old_string` might not be perfectly precise, the tool incorporates a multi-stage edit correction mechanism.
     - If the initial `old_string` isn't found or matches multiple locations, the tool can leverage the Qwen model to iteratively refine `old_string` (and potentially `new_string`).
     - This self-correction process attempts to identify the unique segment the model intended to modify, making the `edit` operation more robust even with slightly imperfect initial context.
@@ -164,10 +158,10 @@ search_file_content(pattern="function", include="*.js", maxResults=10)
   - `old_string` is not empty, but the `file_path` does not exist.
   - `old_string` is empty, but the `file_path` already exists.
   - `old_string` is not found in the file after attempts to correct it.
-  - `old_string` is found multiple times, and the self-correction mechanism cannot resolve it to a single, unambiguous match.
+  - `old_string` is found multiple times, `replace_all` is false, and the self-correction mechanism cannot resolve it to a single, unambiguous match.
 - **Output (`llmContent`):**
   - On success: `Successfully modified file: /path/to/file.txt (1 replacements).` or `Created new file: /path/to/new_file.txt with provided content.`
-  - On failure: An error message explaining the reason (e.g., `Failed to edit, 0 occurrences found...`, `Failed to edit, expected 1 occurrences but found 2...`).
+  - On failure: An error message explaining the reason (e.g., `Failed to edit, 0 occurrences found...`, `Failed to edit because the text matches multiple locations...`).
 - **Confirmation:** Yes. Shows a diff of the proposed changes and asks for user approval before writing to the file.
 
 These file system tools provide a foundation for Qwen Code to understand and interact with your local project context.

docs/tools/web-search.md

@@ -1,43 +1,186 @@
 # Web Search Tool (`web_search`)
 
-This document describes the `web_search` tool.
+This document describes the `web_search` tool for performing web searches using multiple providers.
 
 ## Description
 
-Use `web_search` to perform a web search using the Tavily API. The tool returns a concise answer with sources when possible.
+Use `web_search` to perform a web search and get information from the internet. The tool supports multiple search providers and returns a concise answer with source citations when available.
+
+### Supported Providers
+
+1. **DashScope** (Official, Free) - Automatically available for Qwen OAuth users (200 requests/minute, 2000 requests/day)
+2. **Tavily** - High-quality search API with built-in answer generation
+3. **Google Custom Search** - Google's Custom Search JSON API
 
 ### Arguments
 
-`web_search` takes one argument:
+`web_search` takes two arguments:
 
-- `query` (string, required): The search query.
+- `query` (string, required): The search query
+- `provider` (string, optional): Specific provider to use ("dashscope", "tavily", "google")
+  - If not specified, uses the default provider from configuration
 
-## How to use `web_search`
+## Configuration
 
-`web_search` calls the Tavily API directly. You must configure the `TAVILY_API_KEY` through one of the following methods:
+### Method 1: Settings File (Recommended)
 
-1. **Settings file**: Add `"tavilyApiKey": "your-key-here"` to your `settings.json`
-2. **Environment variable**: Set `TAVILY_API_KEY` in your environment or `.env` file
-3. **Command line**: Use `--tavily-api-key your-key-here` when running the CLI
+Add to your `settings.json`:
 
-If the key is not configured, the tool will be disabled and skipped.
-
-Usage:
-
-```
-web_search(query="Your query goes here.")
+```json
+{
+  "webSearch": {
+    "provider": [
+      { "type": "dashscope" },
+      { "type": "tavily", "apiKey": "tvly-xxxxx" },
+      {
+        "type": "google",
+        "apiKey": "your-google-api-key",
+        "searchEngineId": "your-search-engine-id"
+      }
+    ],
+    "default": "dashscope"
+  }
+}
 ```
 
-## `web_search` examples
+**Notes:**
 
-Get information on a topic:
+- DashScope doesn't require an API key (official, free service)
+- **Qwen OAuth users:** DashScope is automatically added to your provider list, even if not explicitly configured
+- Configure additional providers (Tavily, Google) if you want to use them alongside DashScope
+- Set `default` to specify which provider to use by default (if not set, priority order: Tavily > Google > DashScope)
 
-```
-web_search(query="latest advancements in AI-powered code generation")
+### Method 2: Environment Variables
+
+Set environment variables in your shell or `.env` file:
+
+```bash
+# Tavily
+export TAVILY_API_KEY="tvly-xxxxx"
+
+# Google
+export GOOGLE_API_KEY="your-api-key"
+export GOOGLE_SEARCH_ENGINE_ID="your-engine-id"
 ```
 
-## Important notes
+### Method 3: Command Line Arguments
 
-- **Response returned:** The `web_search` tool returns a concise answer when available, with a list of source links.
-- **Citations:** Source links are appended as a numbered list.
-- **API key:** Configure `TAVILY_API_KEY` via settings.json, environment variables, .env files, or command line arguments. If not configured, the tool is not registered.
+Pass API keys when running Qwen Code:
+
+```bash
+# Tavily
+qwen --tavily-api-key tvly-xxxxx
+
+# Google
+qwen --google-api-key your-key --google-search-engine-id your-id
+
+# Specify default provider
+qwen --web-search-default tavily
+```
+
+### Backward Compatibility (Deprecated)
+
+⚠️ **DEPRECATED:** The legacy `tavilyApiKey` configuration is still supported for backward compatibility but is deprecated:
+
+```json
+{
+  "advanced": {
+    "tavilyApiKey": "tvly-xxxxx" // ⚠️ Deprecated
+  }
+}
+```
+
+**Important:** This configuration is deprecated and will be removed in a future version. Please migrate to the new `webSearch` configuration format shown above. The old configuration will automatically configure Tavily as a provider, but we strongly recommend updating your configuration.
+
+## Disabling Web Search
+
+If you want to disable the web search functionality, you can exclude the `web_search` tool in your `settings.json`:
+
+```json
+{
+  "tools": {
+    "exclude": ["web_search"]
+  }
+}
+```
+
+**Note:** This setting requires a restart of Qwen Code to take effect. Once disabled, the `web_search` tool will not be available to the model, even if web search providers are configured.
+
+## Usage Examples
+
+### Basic search (using default provider)
+
+```
+web_search(query="latest advancements in AI")
+```
+
+### Search with specific provider
+
+```
+web_search(query="latest advancements in AI", provider="tavily")
+```
+
+### Real-world examples
+
+```
+web_search(query="weather in San Francisco today")
+web_search(query="latest Node.js LTS version", provider="google")
+web_search(query="best practices for React 19", provider="dashscope")
+```
+
+## Provider Details
+
+### DashScope (Official)
+
+- **Cost:** Free
+- **Authentication:** Automatically available when using Qwen OAuth authentication
+- **Configuration:** No API key required, automatically added to provider list for Qwen OAuth users
+- **Quota:** 200 requests/minute, 2000 requests/day
+- **Best for:** General queries, always available as fallback for Qwen OAuth users
+- **Auto-registration:** If you're using Qwen OAuth, DashScope is automatically added to your provider list even if you don't configure it explicitly
+
+### Tavily
+
+- **Cost:** Requires API key (paid service with free tier)
+- **Sign up:** https://tavily.com
+- **Features:** High-quality results with AI-generated answers
+- **Best for:** Research, comprehensive answers with citations
+
+### Google Custom Search
+
+- **Cost:** Free tier available (100 queries/day)
+- **Setup:**
+  1. Enable Custom Search API in Google Cloud Console
+  2. Create a Custom Search Engine at https://programmablesearchengine.google.com
+- **Features:** Google's search quality
+- **Best for:** Specific, factual queries
+
+## Important Notes
+
+- **Response format:** Returns a concise answer with numbered source citations
+- **Citations:** Source links are appended as a numbered list: [1], [2], etc.
+- **Multiple providers:** If one provider fails, manually specify another using the `provider` parameter
+- **DashScope availability:** Automatically available for Qwen OAuth users, no configuration needed
+- **Default provider selection:** The system automatically selects a default provider based on availability:
+  1. Your explicit `default` configuration (highest priority)
+  2. CLI argument `--web-search-default`
+  3. First available provider by priority: Tavily > Google > DashScope
+
+## Troubleshooting
+
+**Tool not available?**
+
+- **For Qwen OAuth users:** The tool is automatically registered with DashScope provider, no configuration needed
+- **For other authentication types:** Ensure at least one provider (Tavily or Google) is configured
+- For Tavily/Google: Verify your API keys are correct
+
+**Provider-specific errors?**
+
+- Use the `provider` parameter to try a different search provider
+- Check your API quotas and rate limits
+- Verify API keys are properly set in configuration
+
+**Need help?**
+
+- Check your configuration: Run `qwen` and use the settings dialog
+- View your current settings in `~/.qwen-code/settings.json` (macOS/Linux) or `%USERPROFILE%\.qwen-code\settings.json` (Windows)

esbuild.config.js

@@ -7,7 +7,7 @@
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { createRequire } from 'node:module';
-import { writeFileSync } from 'node:fs';
+import { writeFileSync, rmSync } from 'node:fs';
 
 let esbuild;
 try {
@@ -22,6 +22,9 @@ const __dirname = path.dirname(__filename);
 const require = createRequire(import.meta.url);
 const pkg = require(path.resolve(__dirname, 'package.json'));
 
+// Clean dist directory (cross-platform)
+rmSync(path.resolve(__dirname, 'dist'), { recursive: true, force: true });
+
 const external = [
   '@lydell/node-pty',
   'node-pty',
@@ -30,16 +33,24 @@ const external = [
   '@lydell/node-pty-linux-x64',
   '@lydell/node-pty-win32-arm64',
   '@lydell/node-pty-win32-x64',
+  'tiktoken',
 ];
 
 esbuild
   .build({
     entryPoints: ['packages/cli/index.ts'],
     bundle: true,
-    outfile: 'bundle/gemini.js',
+    outfile: 'dist/cli.js',
     platform: 'node',
     format: 'esm',
+    target: 'node20',
     external,
+    packages: 'bundle',
+    inject: [path.resolve(__dirname, 'scripts/esbuild-shims.js')],
+    banner: {
+      js: `// Force strict mode and setup for ESM
+"use strict";`,
+    },
     alias: {
       'is-in-ci': path.resolve(
         __dirname,
@@ -48,17 +59,20 @@ esbuild
     },
     define: {
       'process.env.CLI_VERSION': JSON.stringify(pkg.version),
-    },
-    banner: {
-      js: `import { createRequire } from 'module'; const require = createRequire(import.meta.url); globalThis.__filename = require('url').fileURLToPath(import.meta.url); globalThis.__dirname = require('path').dirname(globalThis.__filename);`,
+      // Make global available for compatibility
+      global: 'globalThis',
     },
     loader: { '.node': 'file' },
     metafile: true,
     write: true,
+    keepNames: true,
   })
   .then(({ metafile }) => {
     if (process.env.DEV === 'true') {
-      writeFileSync('./bundle/esbuild.json', JSON.stringify(metafile, null, 2));
+      writeFileSync('./dist/esbuild.json', JSON.stringify(metafile, null, 2));
     }
   })
-  .catch(() => process.exit(1));
+  .catch((error) => {
+    console.error('esbuild build failed:', error);
+    process.exitCode = 1;
+  });

eslint.config.js

@@ -12,24 +12,12 @@ import prettierConfig from 'eslint-config-prettier';
 import importPlugin from 'eslint-plugin-import';
 import vitest from '@vitest/eslint-plugin';
 import globals from 'globals';
-import licenseHeader from 'eslint-plugin-license-header';
-import path from 'node:path';
-import url from 'node:url';
-
-// --- ESM way to get __dirname ---
-const __filename = url.fileURLToPath(import.meta.url);
-const __dirname = path.dirname(__filename);
-// --- ---
-
-// Determine the monorepo root (assuming eslint.config.js is at the root)
-const projectRoot = __dirname;
 
 export default tseslint.config(
   {
     // Global ignores
     ignores: [
       'node_modules/*',
-      'eslint.config.js',
       'packages/**/dist/**',
       'bundle/**',
       'package/bundle/**',
@@ -222,6 +210,21 @@ export default tseslint.config(
       '@typescript-eslint/no-require-imports': 'off',
     },
   },
+  // extra settings for core package scripts
+  {
+    files: ['packages/core/scripts/**/*.js'],
+    languageOptions: {
+      globals: {
+        ...globals.node,
+        process: 'readonly',
+        console: 'readonly',
+      },
+    },
+    rules: {
+      'no-restricted-syntax': 'off',
+      '@typescript-eslint/no-require-imports': 'off',
+    },
+  },
   // Prettier config must be last
   prettierConfig,
   // extra settings for scripts that we run directly with node

integration-tests/acp-integration.test.ts

@@ -0,0 +1,590 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { spawn } from 'node:child_process';
+import { readFileSync, writeFileSync } from 'node:fs';
+import { createInterface } from 'node:readline';
+import { setTimeout as delay } from 'node:timers/promises';
+import { describe, expect, it } from 'vitest';
+import { TestRig } from './test-helper.js';
+
+const REQUEST_TIMEOUT_MS = 60_000;
+const INITIAL_PROMPT = 'Create a quick note (smoke test).';
+const RESUME_PROMPT = 'Continue the note after reload.';
+const LIST_SIZE = 5;
+const IS_SANDBOX =
+  process.env['GEMINI_SANDBOX'] &&
+  process.env['GEMINI_SANDBOX']!.toLowerCase() !== 'false';
+
+type PendingRequest = {
+  resolve: (value: unknown) => void;
+  reject: (reason: Error) => void;
+  timeout: NodeJS.Timeout;
+};
+
+type SessionUpdateNotification = {
+  sessionId?: string;
+  update?: {
+    sessionUpdate?: string;
+    availableCommands?: Array<{
+      name: string;
+      description: string;
+      input?: { hint: string } | null;
+    }>;
+    content?: {
+      type: string;
+      text?: string;
+    };
+    modeId?: string;
+  };
+};
+
+type PermissionRequest = {
+  id: number;
+  sessionId?: string;
+  toolCall?: {
+    toolCallId: string;
+    title: string;
+    kind: string;
+    status: string;
+    content?: Array<{
+      type: string;
+      text?: string;
+      path?: string;
+      oldText?: string;
+      newText?: string;
+    }>;
+  };
+  options?: Array<{
+    optionId: string;
+    name: string;
+    kind: string;
+  }>;
+};
+
+type PermissionHandler = (
+  request: PermissionRequest,
+) => { optionId: string } | { outcome: 'cancelled' };
+
+/**
+ * Sets up an ACP test environment with all necessary utilities.
+ */
+function setupAcpTest(
+  rig: TestRig,
+  options?: { permissionHandler?: PermissionHandler },
+) {
+  const pending = new Map<number, PendingRequest>();
+  let nextRequestId = 1;
+  const sessionUpdates: SessionUpdateNotification[] = [];
+  const permissionRequests: PermissionRequest[] = [];
+  const stderr: string[] = [];
+
+  // Default permission handler: auto-approve all
+  const permissionHandler =
+    options?.permissionHandler ?? (() => ({ optionId: 'proceed_once' }));
+
+  const agent = spawn('node', [rig.bundlePath, '--experimental-acp'], {
+    cwd: rig.testDir!,
+    stdio: ['pipe', 'pipe', 'pipe'],
+  });
+
+  agent.stderr?.on('data', (chunk) => {
+    stderr.push(chunk.toString());
+  });
+
+  const rl = createInterface({ input: agent.stdout });
+
+  const send = (json: unknown) => {
+    agent.stdin.write(`${JSON.stringify(json)}\n`);
+  };
+
+  const sendResponse = (id: number, result: unknown) => {
+    send({ jsonrpc: '2.0', id, result });
+  };
+
+  const sendRequest = (method: string, params?: unknown) =>
+    new Promise<unknown>((resolve, reject) => {
+      const id = nextRequestId++;
+      const timeout = setTimeout(() => {
+        pending.delete(id);
+        reject(new Error(`Request ${id} (${method}) timed out`));
+      }, REQUEST_TIMEOUT_MS);
+      pending.set(id, { resolve, reject, timeout });
+      send({ jsonrpc: '2.0', id, method, params });
+    });
+
+  const handleResponse = (msg: {
+    id: number;
+    result?: unknown;
+    error?: { message?: string };
+  }) => {
+    const waiter = pending.get(msg.id);
+    if (!waiter) {
+      return;
+    }
+    clearTimeout(waiter.timeout);
+    pending.delete(msg.id);
+    if (msg.error) {
+      waiter.reject(new Error(msg.error.message ?? 'Unknown error'));
+    } else {
+      waiter.resolve(msg.result);
+    }
+  };
+
+  const handleMessage = (msg: {
+    id?: number;
+    method?: string;
+    params?: SessionUpdateNotification & {
+      path?: string;
+      content?: string;
+      sessionId?: string;
+      toolCall?: PermissionRequest['toolCall'];
+      options?: PermissionRequest['options'];
+    };
+    result?: unknown;
+    error?: { message?: string };
+  }) => {
+    if (typeof msg.id !== 'undefined' && ('result' in msg || 'error' in msg)) {
+      handleResponse(
+        msg as {
+          id: number;
+          result?: unknown;
+          error?: { message?: string };
+        },
+      );
+      return;
+    }
+
+    if (msg.method === 'session/update') {
+      sessionUpdates.push({
+        sessionId: msg.params?.sessionId,
+        update: msg.params?.update,
+      });
+      return;
+    }
+
+    if (
+      msg.method === 'session/request_permission' &&
+      typeof msg.id === 'number'
+    ) {
+      // Track permission request
+      const permRequest: PermissionRequest = {
+        id: msg.id,
+        sessionId: msg.params?.sessionId,
+        toolCall: msg.params?.toolCall,
+        options: msg.params?.options,
+      };
+      permissionRequests.push(permRequest);
+
+      // Use custom handler or default
+      const response = permissionHandler(permRequest);
+      if ('outcome' in response) {
+        sendResponse(msg.id, { outcome: response });
+      } else {
+        sendResponse(msg.id, {
+          outcome: { optionId: response.optionId, outcome: 'selected' },
+        });
+      }
+      return;
+    }
+
+    if (msg.method === 'fs/read_text_file' && typeof msg.id === 'number') {
+      try {
+        const content = readFileSync(msg.params?.path ?? '', 'utf8');
+        sendResponse(msg.id, { content });
+      } catch (e) {
+        sendResponse(msg.id, { content: `ERROR: ${(e as Error).message}` });
+      }
+      return;
+    }
+
+    if (msg.method === 'fs/write_text_file' && typeof msg.id === 'number') {
+      try {
+        writeFileSync(
+          msg.params?.path ?? '',
+          msg.params?.content ?? '',
+          'utf8',
+        );
+        sendResponse(msg.id, null);
+      } catch (e) {
+        sendResponse(msg.id, { message: (e as Error).message });
+      }
+    }
+  };
+
+  rl.on('line', (line) => {
+    if (!line.trim()) return;
+    try {
+      const msg = JSON.parse(line);
+      handleMessage(msg);
+    } catch {
+      // Ignore non-JSON output from the agent.
+    }
+  });
+
+  const waitForExit = () =>
+    new Promise<void>((resolve) => {
+      if (agent.exitCode !== null || agent.signalCode) {
+        resolve();
+        return;
+      }
+      agent.once('exit', () => resolve());
+    });
+
+  const cleanup = async () => {
+    rl.close();
+    agent.kill();
+    pending.forEach(({ timeout }) => clearTimeout(timeout));
+    pending.clear();
+    await waitForExit();
+  };
+
+  return {
+    sendRequest,
+    sendResponse,
+    cleanup,
+    stderr,
+    sessionUpdates,
+    permissionRequests,
+  };
+}
+
+(IS_SANDBOX ? describe.skip : describe)('acp integration', () => {
+  it('creates, lists, loads, and resumes a session', async () => {
+    const rig = new TestRig();
+    rig.setup('acp load session');
+
+    const { sendRequest, cleanup, stderr, sessionUpdates } = setupAcpTest(rig);
+
+    try {
+      const initResult = await sendRequest('initialize', {
+        protocolVersion: 1,
+        clientCapabilities: {
+          fs: { readTextFile: true, writeTextFile: true },
+        },
+      });
+      expect(initResult).toBeDefined();
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      expect((initResult as any).agentInfo.version).toBeDefined();
+
+      await sendRequest('authenticate', { methodId: 'openai' });
+
+      const newSession = (await sendRequest('session/new', {
+        cwd: rig.testDir!,
+        mcpServers: [],
+      })) as { sessionId: string };
+      expect(newSession.sessionId).toBeTruthy();
+
+      const promptResult = await sendRequest('session/prompt', {
+        sessionId: newSession.sessionId,
+        prompt: [{ type: 'text', text: INITIAL_PROMPT }],
+      });
+      expect(promptResult).toBeDefined();
+
+      await delay(500);
+
+      const listResult = (await sendRequest('session/list', {
+        cwd: rig.testDir!,
+        size: LIST_SIZE,
+      })) as { items?: Array<{ sessionId: string }> };
+
+      expect(Array.isArray(listResult.items)).toBe(true);
+      expect(listResult.items?.length ?? 0).toBeGreaterThan(0);
+
+      const sessionToLoad = listResult.items![0].sessionId;
+      await sendRequest('session/load', {
+        cwd: rig.testDir!,
+        sessionId: sessionToLoad,
+        mcpServers: [],
+      });
+
+      const resumeResult = await sendRequest('session/prompt', {
+        sessionId: sessionToLoad,
+        prompt: [{ type: 'text', text: RESUME_PROMPT }],
+      });
+      expect(resumeResult).toBeDefined();
+
+      const sessionsWithUpdates = sessionUpdates
+        .map((update) => update.sessionId)
+        .filter(Boolean);
+      expect(sessionsWithUpdates).toContain(sessionToLoad);
+    } catch (e) {
+      if (stderr.length) {
+        console.error('Agent stderr:', stderr.join(''));
+      }
+      throw e;
+    } finally {
+      await cleanup();
+    }
+  });
+
+  it('returns modes on initialize and allows setting approval mode', async () => {
+    const rig = new TestRig();
+    rig.setup('acp approval mode');
+
+    const { sendRequest, cleanup, stderr } = setupAcpTest(rig);
+
+    try {
+      // Test 1: Initialize and verify modes are returned
+      const initResult = (await sendRequest('initialize', {
+        protocolVersion: 1,
+        clientCapabilities: {
+          fs: { readTextFile: true, writeTextFile: true },
+        },
+      })) as {
+        protocolVersion: number;
+        modes: {
+          currentModeId: string;
+          availableModes: Array<{
+            id: string;
+            name: string;
+            description: string;
+          }>;
+        };
+      };
+
+      expect(initResult).toBeDefined();
+      expect(initResult.protocolVersion).toBe(1);
+
+      // Verify modes data is present
+      expect(initResult.modes).toBeDefined();
+      expect(initResult.modes.currentModeId).toBeDefined();
+      expect(Array.isArray(initResult.modes.availableModes)).toBe(true);
+      expect(initResult.modes.availableModes.length).toBeGreaterThan(0);
+
+      // Verify available modes have expected structure
+      const modeIds = initResult.modes.availableModes.map((m) => m.id);
+      expect(modeIds).toContain('default');
+      expect(modeIds).toContain('yolo');
+      expect(modeIds).toContain('auto-edit');
+      expect(modeIds).toContain('plan');
+
+      // Verify each mode has required fields
+      for (const mode of initResult.modes.availableModes) {
+        expect(mode.id).toBeTruthy();
+        expect(mode.name).toBeTruthy();
+        expect(mode.description).toBeTruthy();
+      }
+
+      // Test 2: Authenticate
+      await sendRequest('authenticate', { methodId: 'openai' });
+
+      // Test 3: Create a new session
+      const newSession = (await sendRequest('session/new', {
+        cwd: rig.testDir!,
+        mcpServers: [],
+      })) as { sessionId: string };
+      expect(newSession.sessionId).toBeTruthy();
+
+      // Test 4: Set approval mode to 'yolo'
+      const setModeResult = (await sendRequest('session/set_mode', {
+        sessionId: newSession.sessionId,
+        modeId: 'yolo',
+      })) as { modeId: string };
+      expect(setModeResult).toBeDefined();
+      expect(setModeResult.modeId).toBe('yolo');
+
+      // Test 5: Set approval mode to 'auto-edit'
+      const setModeResult2 = (await sendRequest('session/set_mode', {
+        sessionId: newSession.sessionId,
+        modeId: 'auto-edit',
+      })) as { modeId: string };
+      expect(setModeResult2).toBeDefined();
+      expect(setModeResult2.modeId).toBe('auto-edit');
+
+      // Test 6: Set approval mode back to 'default'
+      const setModeResult3 = (await sendRequest('session/set_mode', {
+        sessionId: newSession.sessionId,
+        modeId: 'default',
+      })) as { modeId: string };
+      expect(setModeResult3).toBeDefined();
+      expect(setModeResult3.modeId).toBe('default');
+    } catch (e) {
+      if (stderr.length) {
+        console.error('Agent stderr:', stderr.join(''));
+      }
+      throw e;
+    } finally {
+      await cleanup();
+    }
+  });
+
+  it('receives available_commands_update with slash commands after session creation', async () => {
+    const rig = new TestRig();
+    rig.setup('acp slash commands');
+
+    const { sendRequest, cleanup, stderr, sessionUpdates } = setupAcpTest(rig);
+
+    try {
+      // Initialize
+      await sendRequest('initialize', {
+        protocolVersion: 1,
+        clientCapabilities: {
+          fs: { readTextFile: true, writeTextFile: true },
+        },
+      });
+
+      await sendRequest('authenticate', { methodId: 'openai' });
+
+      // Create a new session
+      const newSession = (await sendRequest('session/new', {
+        cwd: rig.testDir!,
+        mcpServers: [],
+      })) as { sessionId: string };
+      expect(newSession.sessionId).toBeTruthy();
+
+      // Wait for available_commands_update to be received
+      await delay(1000);
+
+      // Verify available_commands_update is received
+      const commandsUpdate = sessionUpdates.find(
+        (update) =>
+          update.update?.sessionUpdate === 'available_commands_update',
+      );
+
+      expect(commandsUpdate).toBeDefined();
+      expect(commandsUpdate?.update?.availableCommands).toBeDefined();
+      expect(Array.isArray(commandsUpdate?.update?.availableCommands)).toBe(
+        true,
+      );
+
+      // Verify that the 'init' command is present (the only allowed built-in command for ACP)
+      const initCommand = commandsUpdate?.update?.availableCommands?.find(
+        (cmd) => cmd.name === 'init',
+      );
+      expect(initCommand).toBeDefined();
+      expect(initCommand?.description).toBeTruthy();
+
+      // Note: We don't test /init execution here because it triggers a complex
+      // multi-step process (listing files, reading up to 10 files, generating QWEN.md)
+      // that can take 30-60+ seconds, exceeding the request timeout.
+      // The slash command execution path is tested via simpler prompts in other tests.
+    } catch (e) {
+      if (stderr.length) {
+        console.error('Agent stderr:', stderr.join(''));
+      }
+      throw e;
+    } finally {
+      await cleanup();
+    }
+  });
+
+  it('handles exit plan mode with permission request and mode update notification', async () => {
+    const rig = new TestRig();
+    rig.setup('acp exit plan mode');
+
+    // Track which permission requests we've seen
+    const planModeRequests: PermissionRequest[] = [];
+
+    const { sendRequest, cleanup, stderr, sessionUpdates, permissionRequests } =
+      setupAcpTest(rig, {
+        permissionHandler: (request) => {
+          // Track all permission requests for later verification
+          // Auto-approve exit plan mode requests with "proceed_always" to trigger auto-edit mode
+          if (request.toolCall?.kind === 'switch_mode') {
+            planModeRequests.push(request);
+            // Return proceed_always to switch to auto-edit mode
+            return { optionId: 'proceed_always' };
+          }
+          // Auto-approve all other requests
+          return { optionId: 'proceed_once' };
+        },
+      });
+
+    try {
+      // Initialize
+      await sendRequest('initialize', {
+        protocolVersion: 1,
+        clientCapabilities: {
+          fs: { readTextFile: true, writeTextFile: true },
+        },
+      });
+
+      await sendRequest('authenticate', { methodId: 'openai' });
+
+      // Create a new session
+      const newSession = (await sendRequest('session/new', {
+        cwd: rig.testDir!,
+        mcpServers: [],
+      })) as { sessionId: string };
+      expect(newSession.sessionId).toBeTruthy();
+
+      // Set mode to 'plan' to enable plan mode
+      const setModeResult = (await sendRequest('session/set_mode', {
+        sessionId: newSession.sessionId,
+        modeId: 'plan',
+      })) as { modeId: string };
+      expect(setModeResult.modeId).toBe('plan');
+
+      // Send a prompt that should trigger the LLM to call exit_plan_mode
+      // The prompt is designed to trigger planning behavior
+      const promptResult = await sendRequest('session/prompt', {
+        sessionId: newSession.sessionId,
+        prompt: [
+          {
+            type: 'text',
+            text: 'Create a simple hello world function in Python. Make a brief plan and when ready, use the exit_plan_mode tool to present it for approval.',
+          },
+        ],
+      });
+      expect(promptResult).toBeDefined();
+
+      // Give time for all notifications to be processed
+      await delay(1000);
+
+      // Verify: If exit_plan_mode was called, we should have received:
+      // 1. A permission request with kind: "switch_mode"
+      // 2. A current_mode_update notification after approval
+
+      // Check for switch_mode permission requests
+      const switchModeRequests = permissionRequests.filter(
+        (req) => req.toolCall?.kind === 'switch_mode',
+      );
+
+      // Check for current_mode_update notifications
+      const modeUpdateNotifications = sessionUpdates.filter(
+        (update) => update.update?.sessionUpdate === 'current_mode_update',
+      );
+
+      // If the LLM called exit_plan_mode, verify the flow
+      if (switchModeRequests.length > 0) {
+        // Verify permission request structure
+        const permReq = switchModeRequests[0];
+        expect(permReq.toolCall).toBeDefined();
+        expect(permReq.toolCall?.kind).toBe('switch_mode');
+        expect(permReq.toolCall?.status).toBe('pending');
+        expect(permReq.options).toBeDefined();
+        expect(Array.isArray(permReq.options)).toBe(true);
+
+        // Verify options include appropriate choices
+        const optionKinds = permReq.options?.map((opt) => opt.kind) ?? [];
+        expect(optionKinds).toContain('allow_once');
+        expect(optionKinds).toContain('allow_always');
+
+        // After approval, should have received current_mode_update
+        expect(modeUpdateNotifications.length).toBeGreaterThan(0);
+
+        // Verify mode update structure
+        const modeUpdate = modeUpdateNotifications[0];
+        expect(modeUpdate.sessionId).toBe(newSession.sessionId);
+        expect(modeUpdate.update?.modeId).toBeDefined();
+        // Mode should be auto-edit since we approved with proceed_always
+        expect(modeUpdate.update?.modeId).toBe('auto-edit');
+      }
+
+      // Note: If the LLM didn't call exit_plan_mode, that's acceptable
+      // since LLM behavior is non-deterministic. The test setup and structure
+      // is verified regardless.
+    } catch (e) {
+      if (stderr.length) {
+        console.error('Agent stderr:', stderr.join(''));
+      }
+      throw e;
+    } finally {
+      await cleanup();
+    }
+  });
+});

integration-tests/context-compress-interactive.test.ts

@@ -21,23 +21,21 @@ describe('Interactive Mode', () => {
   it.skipIf(process.platform === 'win32')(
     'should trigger chat compression with /compress command',
     async () => {
-      await rig.setup('interactive-compress-test');
+      await rig.setup('interactive-compress-test', {
+        settings: {
+          security: {
+            auth: {
+              selectedType: 'openai',
+            },
+          },
+        },
+      });
 
       const { ptyProcess } = rig.runInteractive();
 
       let fullOutput = '';
       ptyProcess.onData((data) => (fullOutput += data));
 
-      const authDialogAppeared = await rig.waitForText(
-        'How would you like to authenticate',
-        5000,
-      );
-
-      // select the second option if auth dialog come's up
-      if (authDialogAppeared) {
-        ptyProcess.write('2');
-      }
-
       // Wait for the app to be ready
       const isReady = await rig.waitForText('Type your message', 15000);
       expect(
@@ -68,49 +66,43 @@ describe('Interactive Mode', () => {
     },
   );
 
-  it.skipIf(process.platform === 'win32')(
-    'should handle compression failure on token inflation',
-    async () => {
-      await rig.setup('interactive-compress-test');
+  it.skip('should handle compression failure on token inflation', async () => {
+    await rig.setup('interactive-compress-test', {
+      settings: {
+        security: {
+          auth: {
+            selectedType: 'openai',
+          },
+        },
+      },
+    });
 
-      const { ptyProcess } = rig.runInteractive();
+    const { ptyProcess } = rig.runInteractive();
 
-      let fullOutput = '';
-      ptyProcess.onData((data) => (fullOutput += data));
+    let fullOutput = '';
+    ptyProcess.onData((data) => (fullOutput += data));
 
-      const authDialogAppeared = await rig.waitForText(
-        'How would you like to authenticate',
-        5000,
-      );
+    // Wait for the app to be ready
+    const isReady = await rig.waitForText('Type your message', 25000);
+    expect(isReady, 'CLI did not start up in interactive mode correctly').toBe(
+      true,
+    );
 
-      // select the second option if auth dialog come's up
-      if (authDialogAppeared) {
-        ptyProcess.write('2');
-      }
+    await type(ptyProcess, '/compress');
+    await new Promise((resolve) => setTimeout(resolve, 1000));
+    await type(ptyProcess, '\r');
 
-      // Wait for the app to be ready
-      const isReady = await rig.waitForText('Type your message', 25000);
-      expect(
-        isReady,
-        'CLI did not start up in interactive mode correctly',
-      ).toBe(true);
+    const foundEvent = await rig.waitForTelemetryEvent(
+      'chat_compression',
+      90000,
+    );
+    expect(foundEvent).toBe(true);
 
-      await type(ptyProcess, '/compress');
-      await new Promise((resolve) => setTimeout(resolve, 100));
-      await type(ptyProcess, '\r');
+    const compressionFailed = await rig.waitForText(
+      'Nothing to compress.',
+      25000,
+    );
 
-      const foundEvent = await rig.waitForTelemetryEvent(
-        'chat_compression',
-        90000,
-      );
-      expect(foundEvent).toBe(true);
-
-      const compressionFailed = await rig.waitForText(
-        'compression was not beneficial',
-        25000,
-      );
-
-      expect(compressionFailed).toBe(true);
-    },
-  );
+    expect(compressionFailed).toBe(true);
+  });
 });

integration-tests/ctrl-c-exit.test.ts

@@ -6,124 +6,71 @@
 
 import { describe, it, expect } from 'vitest';
 import { TestRig } from './test-helper.js';
-import * as fs from 'node:fs';
-import * as path from 'node:path';
 
 describe('Ctrl+C exit', () => {
   // (#9782) Temporarily disabling on windows because it is failing on main and every
   // PR, which is potentially hiding other failures
-  it.skipIf(process.platform === 'win32')(
-    'should exit gracefully on second Ctrl+C',
-    async () => {
-      const rig = new TestRig();
-      await rig.setup('should exit gracefully on second Ctrl+C');
+  it.skip('should exit gracefully on second Ctrl+C', async () => {
+    const rig = new TestRig();
+    await rig.setup('should exit gracefully on second Ctrl+C');
 
-      const { ptyProcess, promise } = rig.runInteractive();
+    const { ptyProcess, promise } = rig.runInteractive();
 
-      let output = '';
-      ptyProcess.onData((data) => {
-        output += data;
-      });
+    let output = '';
+    ptyProcess.onData((data) => {
+      output += data;
+    });
 
-      // Wait for the app to be ready by looking for the initial prompt indicator
-      await rig.poll(() => output.includes('▶'), 5000, 100);
+    const isReady = await rig.waitForText('Type your message', 15000);
+    expect(isReady, 'CLI did not start up in interactive mode correctly').toBe(
+      true,
+    );
 
-      // Send first Ctrl+C
-      ptyProcess.write(String.fromCharCode(3));
+    // Send first Ctrl+C
+    ptyProcess.write(String.fromCharCode(3));
 
-      // Wait for the exit prompt
-      await rig.poll(
-        () => output.includes('Press Ctrl+C again to exit'),
-        1500,
-        50,
-      );
+    // Wait for the exit prompt
+    const showedExitPrompt = await rig.poll(
+      () => output.includes('Press Ctrl+C again to exit'),
+      1500,
+      50,
+    );
+    expect(showedExitPrompt, `Exit prompt not shown. Output: ${output}`).toBe(
+      true,
+    );
 
-      // Send second Ctrl+C
-      ptyProcess.write(String.fromCharCode(3));
+    // Send second Ctrl+C
+    ptyProcess.write(String.fromCharCode(3));
 
-      const result = await promise;
+    // Wait for process exit with timeout to fail fast
+    const EXIT_TIMEOUT = 5000;
+    const result = await Promise.race([
+      promise,
+      new Promise<never>((_, reject) =>
+        setTimeout(
+          () =>
+            reject(
+              new Error(
+                `Process did not exit within ${EXIT_TIMEOUT}ms. Output: ${output}`,
+              ),
+            ),
+          EXIT_TIMEOUT,
+        ),
+      ),
+    ]);
 
-      // Expect a graceful exit (code 0)
-      expect(
-        result.exitCode,
-        `Process exited with code ${result.exitCode}. Output: ${result.output}`,
-      ).toBe(0);
+    // Expect a graceful exit (code 0)
+    expect(
+      result.exitCode,
+      `Process exited with code ${result.exitCode}. Output: ${result.output}`,
+    ).toBe(0);
 
-      // Check that the quitting message is displayed
-      const quittingMessage = 'Agent powering down. Goodbye!';
-      // The regex below is intentionally matching the ESC control character (\x1b)
-      // to strip ANSI color codes from the terminal output.
-      // eslint-disable-next-line no-control-regex
-      const cleanOutput = output.replace(/\x1b\[[0-9;]*m/g, '');
-      expect(cleanOutput).toContain(quittingMessage);
-    },
-  );
-
-  it.skipIf(process.platform === 'win32')(
-    'should exit gracefully on second Ctrl+C when calling a tool',
-    async () => {
-      const rig = new TestRig();
-      await rig.setup(
-        'should exit gracefully on second Ctrl+C when calling a tool',
-      );
-
-      const childProcessFile = 'child_process_file.txt';
-      rig.createFile(
-        'wait.js',
-        `setTimeout(() => require('fs').writeFileSync('${childProcessFile}', 'done'), 5000)`,
-      );
-
-      const { ptyProcess, promise } = rig.runInteractive();
-
-      let output = '';
-      ptyProcess.onData((data) => {
-        output += data;
-      });
-
-      // Wait for the app to be ready by looking for the initial prompt indicator
-      await rig.poll(() => output.includes('▶'), 5000, 100);
-
-      ptyProcess.write('use the tool to run "node -e wait.js"\n');
-
-      await rig.poll(() => output.includes('Shell'), 5000, 100);
-
-      // Send first Ctrl+C
-      ptyProcess.write(String.fromCharCode(3));
-
-      // Wait for the exit prompt
-      await rig.poll(
-        () => output.includes('Press Ctrl+C again to exit'),
-        1500,
-        50,
-      );
-
-      // Send second Ctrl+C
-      ptyProcess.write(String.fromCharCode(3));
-
-      const result = await promise;
-
-      // Expect a graceful exit (code 0)
-      expect(
-        result.exitCode,
-        `Process exited with code ${result.exitCode}. Output: ${result.output}`,
-      ).toBe(0);
-
-      // Check that the quitting message is displayed
-      const quittingMessage = 'Agent powering down. Goodbye!';
-      // The regex below is intentionally matching the ESC control character (\x1b)
-      // to strip ANSI color codes from the terminal output.
-      // eslint-disable-next-line no-control-regex
-      const cleanOutput = output.replace(/\x1b\[[0-9;]*m/g, '');
-      expect(cleanOutput).toContain(quittingMessage);
-
-      // Check that the child process was terminated and did not create the file.
-      const childProcessFileExists = fs.existsSync(
-        path.join(rig.testDir!, childProcessFile),
-      );
-      expect(
-        childProcessFileExists,
-        'Child process file should not exist',
-      ).toBe(false);
-    },
-  );
+    // Check that the quitting message is displayed
+    const quittingMessage = 'Agent powering down. Goodbye!';
+    // The regex below is intentionally matching the ESC control character (\x1b)
+    // to strip ANSI color codes from the terminal output.
+    // eslint-disable-next-line no-control-regex
+    const cleanOutput = output.replace(/\x1b\[[0-9;]*m/g, '');
+    expect(cleanOutput).toContain(quittingMessage);
+  });
 });

integration-tests/edit.test.ts

@@ -92,7 +92,7 @@ describe('edit', () => {
     expect(newFileContent).toBe(expectedContent);
   });
 
-  it('should fail safely when old_string is not found', async () => {
+  it.skip('should fail safely when old_string is not found', async () => {
     const rig = new TestRig();
     await rig.setup('should fail safely when old_string is not found');
     const fileName = 'no_match.txt';

integration-tests/file-system-interactive.test.ts

@@ -19,24 +19,22 @@ describe('Interactive file system', () => {
   });
 
   it.skipIf(process.platform === 'win32')(
-    'should perform a read-then-write sequence',
+    'should perform a read-then-write sequence in interactive mode',
     async () => {
       const fileName = 'version.txt';
-      await rig.setup('interactive-read-then-write');
+      await rig.setup('interactive-read-then-write', {
+        settings: {
+          security: {
+            auth: {
+              selectedType: 'openai',
+            },
+          },
+        },
+      });
       rig.createFile(fileName, '1.0.0');
 
       const { ptyProcess } = rig.runInteractive();
 
-      const authDialogAppeared = await rig.waitForText(
-        'How would you like to authenticate',
-        5000,
-      );
-
-      // select the second option if auth dialog come's up
-      if (authDialogAppeared) {
-        ptyProcess.write('2');
-      }
-
       // Wait for the app to be ready
       const isReady = await rig.waitForText('Type your message', 15000);
       expect(

integration-tests/json-output.test.ts

@@ -19,7 +19,7 @@ describe('JSON output', () => {
     await rig.cleanup();
   });
 
-  it('should return a valid JSON with response and stats', async () => {
+  it('should return a valid JSON array with result message containing response and stats', async () => {
     const result = await rig.run(
       'What is the capital of France?',
       '--output-format',
@@ -27,19 +27,217 @@ describe('JSON output', () => {
     );
     const parsed = JSON.parse(result);
 
-    expect(parsed).toHaveProperty('response');
-    expect(typeof parsed.response).toBe('string');
-    expect(parsed.response.toLowerCase()).toContain('paris');
+    // The output should be an array of messages
+    expect(Array.isArray(parsed)).toBe(true);
+    expect(parsed.length).toBeGreaterThan(0);
 
-    expect(parsed).toHaveProperty('stats');
-    expect(typeof parsed.stats).toBe('object');
+    // Find the result message (should be the last message)
+    const resultMessage = parsed.find(
+      (msg: unknown) =>
+        typeof msg === 'object' &&
+        msg !== null &&
+        'type' in msg &&
+        msg.type === 'result',
+    );
+
+    expect(resultMessage).toBeDefined();
+    expect(resultMessage).toHaveProperty('is_error');
+    expect(resultMessage.is_error).toBe(false);
+    expect(resultMessage).toHaveProperty('result');
+    expect(typeof resultMessage.result).toBe('string');
+    expect(resultMessage.result.toLowerCase()).toContain('paris');
+
+    // Stats may be present if available
+    if ('stats' in resultMessage) {
+      expect(typeof resultMessage.stats).toBe('object');
+    }
+  });
+
+  it('should return line-delimited JSON messages for stream-json output format', async () => {
+    const result = await rig.run(
+      'What is the capital of France?',
+      '--output-format',
+      'stream-json',
+    );
+
+    // Stream-json output is line-delimited JSON (one JSON object per line)
+    const lines = result
+      .trim()
+      .split('\n')
+      .filter((line) => line.trim());
+    expect(lines.length).toBeGreaterThan(0);
+
+    // Parse each line as a JSON object
+    const messages: unknown[] = [];
+    for (const line of lines) {
+      try {
+        const parsed = JSON.parse(line);
+        messages.push(parsed);
+      } catch (parseError) {
+        throw new Error(
+          `Failed to parse JSON line: ${line}. Error: ${parseError}`,
+        );
+      }
+    }
+
+    // Should have at least system, assistant, and result messages
+    expect(messages.length).toBeGreaterThanOrEqual(3);
+
+    // Find system message
+    const systemMessage = messages.find(
+      (msg: unknown) =>
+        typeof msg === 'object' &&
+        msg !== null &&
+        'type' in msg &&
+        msg.type === 'system',
+    );
+    expect(systemMessage).toBeDefined();
+    expect(systemMessage).toHaveProperty('subtype');
+    expect(systemMessage).toHaveProperty('session_id');
+
+    // Find assistant message
+    const assistantMessage = messages.find(
+      (msg: unknown) =>
+        typeof msg === 'object' &&
+        msg !== null &&
+        'type' in msg &&
+        msg.type === 'assistant',
+    );
+    expect(assistantMessage).toBeDefined();
+    expect(assistantMessage).toHaveProperty('message');
+    expect(assistantMessage).toHaveProperty('session_id');
+
+    // Find result message (should be the last message)
+    const resultMessage = messages[messages.length - 1] as {
+      type: string;
+      is_error: boolean;
+      result: string;
+    };
+    expect(resultMessage).toBeDefined();
+    expect(
+      typeof resultMessage === 'object' &&
+        resultMessage !== null &&
+        'type' in resultMessage &&
+        resultMessage.type === 'result',
+    ).toBe(true);
+    expect(resultMessage).toHaveProperty('is_error');
+    expect(resultMessage.is_error).toBe(false);
+    expect(resultMessage).toHaveProperty('result');
+    expect(typeof resultMessage.result).toBe('string');
+    expect(resultMessage.result.toLowerCase()).toContain('paris');
+  });
+
+  it('should include stream events when using stream-json with include-partial-messages', async () => {
+    const result = await rig.run(
+      'What is the capital of France?',
+      '--output-format',
+      'stream-json',
+      '--include-partial-messages',
+    );
+
+    // Stream-json output is line-delimited JSON (one JSON object per line)
+    const lines = result
+      .trim()
+      .split('\n')
+      .filter((line) => line.trim());
+    expect(lines.length).toBeGreaterThan(0);
+
+    // Parse each line as a JSON object
+    const messages: unknown[] = [];
+    for (const line of lines) {
+      try {
+        const parsed = JSON.parse(line);
+        messages.push(parsed);
+      } catch (parseError) {
+        throw new Error(
+          `Failed to parse JSON line: ${line}. Error: ${parseError}`,
+        );
+      }
+    }
+
+    // Should have more messages than without include-partial-messages
+    // because we're including stream events
+    expect(messages.length).toBeGreaterThan(3);
+
+    // Find stream_event messages
+    const streamEvents = messages.filter(
+      (msg: unknown) =>
+        typeof msg === 'object' &&
+        msg !== null &&
+        'type' in msg &&
+        msg.type === 'stream_event',
+    );
+    expect(streamEvents.length).toBeGreaterThan(0);
+
+    // Verify stream event structure
+    const firstStreamEvent = streamEvents[0];
+    expect(firstStreamEvent).toHaveProperty('event');
+    expect(firstStreamEvent).toHaveProperty('session_id');
+    expect(firstStreamEvent).toHaveProperty('uuid');
+
+    // Check for expected stream event types
+    const eventTypes = streamEvents.map((event: unknown) =>
+      typeof event === 'object' &&
+      event !== null &&
+      'event' in event &&
+      typeof event.event === 'object' &&
+      event.event !== null &&
+      'type' in event.event
+        ? event.event.type
+        : null,
+    );
+
+    // Should have message_start event
+    expect(eventTypes).toContain('message_start');
+
+    // Should have content_block_start event
+    expect(eventTypes).toContain('content_block_start');
+
+    // Should have content_block_delta events
+    expect(eventTypes).toContain('content_block_delta');
+
+    // Should have content_block_stop event
+    expect(eventTypes).toContain('content_block_stop');
+
+    // Should have message_stop event
+    expect(eventTypes).toContain('message_stop');
+
+    // Verify that we still have the complete assistant message
+    const assistantMessage = messages.find(
+      (msg: unknown) =>
+        typeof msg === 'object' &&
+        msg !== null &&
+        'type' in msg &&
+        msg.type === 'assistant',
+    );
+    expect(assistantMessage).toBeDefined();
+    expect(assistantMessage).toHaveProperty('message');
+
+    // Verify that we still have the result message
+    const resultMessage = messages[messages.length - 1] as {
+      type: string;
+      is_error: boolean;
+      result: string;
+    };
+    expect(resultMessage).toBeDefined();
+    expect(
+      typeof resultMessage === 'object' &&
+        resultMessage !== null &&
+        'type' in resultMessage &&
+        resultMessage.type === 'result',
+    ).toBe(true);
+    expect(resultMessage).toHaveProperty('is_error');
+    expect(resultMessage.is_error).toBe(false);
+    expect(resultMessage).toHaveProperty('result');
+    expect(resultMessage.result.toLowerCase()).toContain('paris');
   });
 
   it('should return a JSON error for enforced auth mismatch before running', async () => {
-    process.env['GOOGLE_GENAI_USE_GCA'] = 'true';
+    const originalOpenaiApiKey = process.env['OPENAI_API_KEY'];
+    process.env['OPENAI_API_KEY'] = 'test-key';
     await rig.setup('json-output-auth-mismatch', {
       settings: {
-        security: { auth: { enforcedType: 'gemini-api-key' } },
+        security: { auth: { enforcedType: 'qwen-oauth' } },
       },
     });
 
@@ -50,40 +248,63 @@ describe('JSON output', () => {
     } catch (e) {
       thrown = e as Error;
     } finally {
-      delete process.env['GOOGLE_GENAI_USE_GCA'];
+      process.env['OPENAI_API_KEY'] = originalOpenaiApiKey;
     }
 
     expect(thrown).toBeDefined();
     const message = (thrown as Error).message;
 
-    // Use a regex to find the first complete JSON object in the string
-    const jsonMatch = message.match(/{[\s\S]*}/);
-
-    // Fail if no JSON-like text was found
+    // The error JSON is written to stdout as a CLIResultMessageError
+    // Extract stdout from the error message
+    const stdoutMatch = message.match(/Stdout:\n([\s\S]*?)(?:\n\nStderr:|$)/);
     expect(
-      jsonMatch,
-      'Expected to find a JSON object in the error output',
+      stdoutMatch,
+      'Expected to find stdout in the error message',
     ).toBeTruthy();
 
-    let payload;
+    const stdout = stdoutMatch![1];
+    let parsed: unknown[];
     try {
-      // Parse the matched JSON string
-      payload = JSON.parse(jsonMatch![0]);
+      // Parse the JSON array from stdout
+      parsed = JSON.parse(stdout);
     } catch (parseError) {
-      console.error('Failed to parse the following JSON:', jsonMatch![0]);
+      console.error('Failed to parse the following JSON:', stdout);
       throw new Error(
-        `Test failed: Could not parse JSON from error message. Details: ${parseError}`,
+        `Test failed: Could not parse JSON from stdout. Details: ${parseError}`,
       );
     }
 
-    expect(payload.error).toBeDefined();
-    expect(payload.error.type).toBe('Error');
-    expect(payload.error.code).toBe(1);
-    expect(payload.error.message).toContain(
-      'configured auth type is gemini-api-key',
+    // The output should be an array of messages
+    expect(Array.isArray(parsed)).toBe(true);
+    expect(parsed.length).toBeGreaterThan(0);
+
+    // Find the result message with error
+    const resultMessage = parsed.find(
+      (msg: unknown) =>
+        typeof msg === 'object' &&
+        msg !== null &&
+        'type' in msg &&
+        msg.type === 'result' &&
+        'is_error' in msg &&
+        msg.is_error === true,
+    ) as {
+      type: string;
+      is_error: boolean;
+      subtype: string;
+      error?: { message: string; type?: string };
+    };
+
+    expect(resultMessage).toBeDefined();
+    expect(resultMessage.is_error).toBe(true);
+    expect(resultMessage).toHaveProperty('subtype');
+    expect(resultMessage.subtype).toBe('error_during_execution');
+    expect(resultMessage).toHaveProperty('error');
+    expect(resultMessage.error).toBeDefined();
+    expect(resultMessage.error?.message).toContain(
+      'configured auth type is qwen-oauth',
     );
-    expect(payload.error.message).toContain(
-      'current auth type is oauth-personal',
+    expect(resultMessage.error?.message).toContain(
+      'current auth type is openai',
     );
   });
 });

integration-tests/test-helper.ts

@@ -9,7 +9,6 @@ import { mkdirSync, writeFileSync, readFileSync } from 'node:fs';
 import { join, dirname } from 'node:path';
 import { fileURLToPath } from 'node:url';
 import { env } from 'node:process';
-import { DEFAULT_QWEN_MODEL } from '../packages/core/src/config/models.js';
 import fs from 'node:fs';
 import { EOL } from 'node:os';
 import * as pty from '@lydell/node-pty';
@@ -148,7 +147,7 @@ export class TestRig {
   _interactiveOutput = '';
 
   constructor() {
-    this.bundlePath = join(__dirname, '..', 'bundle/gemini.js');
+    this.bundlePath = join(__dirname, '..', 'dist/cli.js');
     this.testDir = null;
   }
 
@@ -182,7 +181,6 @@ export class TestRig {
         otlpEndpoint: '',
         outfile: telemetryPath,
       },
-      model: DEFAULT_QWEN_MODEL,
       sandbox: env.GEMINI_SANDBOX !== 'false' ? env.GEMINI_SANDBOX : false,
       ...options.settings, // Allow tests to override/add settings
     };
@@ -342,7 +340,8 @@ export class TestRig {
           // as it would corrupt the JSON
           const isJsonOutput =
             commandArgs.includes('--output-format') &&
-            commandArgs.includes('json');
+            (commandArgs.includes('json') ||
+              commandArgs.includes('stream-json'));
 
           // If we have stderr output and it's not a JSON test, include that also
           if (stderr && !isJsonOutput) {
@@ -351,7 +350,23 @@ export class TestRig {
 
           resolve(result);
         } else {
-          reject(new Error(`Process exited with code ${code}:\n${stderr}`));
+          // Check if this is a JSON output test - for JSON errors, the error is in stdout
+          const isJsonOutputOnError =
+            commandArgs.includes('--output-format') &&
+            (commandArgs.includes('json') ||
+              commandArgs.includes('stream-json'));
+
+          // For JSON output tests, include stdout in the error message
+          // as the error JSON is written to stdout
+          if (isJsonOutputOnError && stdout) {
+            reject(
+              new Error(
+                `Process exited with code ${code}:\nStdout:\n${stdout}\n\nStderr:\n${stderr}`,
+              ),
+            );
+          } else {
+            reject(new Error(`Process exited with code ${code}:\n${stderr}`));
+          }
         }
       });
     });

integration-tests/todo_write.test.ts

@@ -12,13 +12,12 @@ describe('todo_write', () => {
     const rig = new TestRig();
     await rig.setup('should be able to create and manage a todo list');
 
-    const prompt = `I want to implement a new feature to track user preferences. Here are the tasks:
-1. Create a user preferences model
-2. Add API endpoints for preferences
-3. Implement frontend components
-4. Write tests for the new functionality
+    const prompt = `Please create a todo list with these three simple tasks:
+1. Buy milk
+2. Walk the dog  
+3. Read a book
 
-Please create a todo list for these tasks.`;
+Use the todo_write tool to create this list.`;
 
     const result = await rig.run(prompt);
 
@@ -50,83 +49,21 @@ Please create a todo list for these tasks.`;
 
     expect(todoArgs.todos).toBeDefined();
     expect(Array.isArray(todoArgs.todos)).toBe(true);
-    expect(todoArgs.todos.length).toBe(4);
+    expect(todoArgs.todos.length).toBeGreaterThanOrEqual(3);
 
     // Check that all todos have the correct structure
     for (const todo of todoArgs.todos) {
       expect(todo.id).toBeDefined();
       expect(todo.content).toBeDefined();
-      expect(['pending', 'in_progress', 'completed']).toContain(todo.status);
+      expect(['pending', 'in_progress', 'completed', 'cancelled']).toContain(
+        todo.status,
+      );
     }
 
     // Log success info if verbose
     if (process.env['VERBOSE'] === 'true') {
       console.log('Todo list created successfully');
-    }
-  });
-
-  it('should be able to update todo status', async () => {
-    const rig = new TestRig();
-    await rig.setup('should be able to update todo status');
-
-    // First create a todo list
-    const initialPrompt = `Create a todo list with these tasks:
-1. Set up project structure
-2. Implement authentication
-3. Add database migrations`;
-
-    await rig.run(initialPrompt);
-    await rig.waitForToolCall('todo_write');
-
-    // Now update the todo list by marking one as in progress
-    const updatePrompt = `I've started working on implementing authentication. Please update the todo list to reflect that.`;
-
-    const result = await rig.run(updatePrompt);
-
-    const foundToolCall = await rig.waitForToolCall('todo_write');
-
-    // Add debugging information
-    if (!foundToolCall) {
-      printDebugInfo(rig, result);
-    }
-
-    expect(
-      foundToolCall,
-      'Expected to find a todo_write tool call',
-    ).toBeTruthy();
-
-    // Validate model output - will throw if no output
-    validateModelOutput(result, null, 'Todo update test');
-
-    // Check that the tool was called with updated parameters
-    const toolLogs = rig.readToolLogs();
-    const todoWriteCalls = toolLogs.filter(
-      (t) => t.toolRequest.name === 'todo_write',
-    );
-
-    expect(todoWriteCalls.length).toBeGreaterThan(0);
-
-    // Parse the arguments to verify the update
-    const todoArgs = JSON.parse(
-      todoWriteCalls[todoWriteCalls.length - 1].toolRequest.args,
-    );
-
-    expect(todoArgs.todos).toBeDefined();
-    expect(Array.isArray(todoArgs.todos)).toBe(true);
-    // The model might create a new list with just the task it's working on
-    // or it might update the existing list. Let's check that we have at least one todo
-    expect(todoArgs.todos.length).toBeGreaterThanOrEqual(1);
-
-    // Check that all todos have the correct structure
-    for (const todo of todoArgs.todos) {
-      expect(todo.id).toBeDefined();
-      expect(todo.content).toBeDefined();
-      expect(['pending', 'in_progress', 'completed']).toContain(todo.status);
-    }
-
-    // Log success info if verbose
-    if (process.env['VERBOSE'] === 'true') {
-      console.log('Todo list updated successfully');
+      console.log(`Created ${todoArgs.todos.length} todos`);
     }
   });
 });

integration-tests/web_search.test.ts

@@ -9,14 +9,53 @@ import { TestRig, printDebugInfo, validateModelOutput } from './test-helper.js';
 
 describe('web_search', () => {
   it('should be able to search the web', async () => {
-    // Skip if Tavily key is not configured
-    if (!process.env['TAVILY_API_KEY']) {
-      console.warn('Skipping web search test: TAVILY_API_KEY not set');
+    // Check if any web search provider is available
+    const hasTavilyKey = !!process.env['TAVILY_API_KEY'];
+    const hasGoogleKey =
+      !!process.env['GOOGLE_API_KEY'] &&
+      !!process.env['GOOGLE_SEARCH_ENGINE_ID'];
+
+    // Skip if no provider is configured
+    // Note: DashScope provider is automatically available for Qwen OAuth users,
+    // but we can't easily detect that in tests without actual OAuth credentials
+    if (!hasTavilyKey && !hasGoogleKey) {
+      console.warn(
+        'Skipping web search test: No web search provider configured. ' +
+          'Set TAVILY_API_KEY or GOOGLE_API_KEY+GOOGLE_SEARCH_ENGINE_ID environment variables.',
+      );
       return;
     }
 
     const rig = new TestRig();
-    await rig.setup('should be able to search the web');
+    // Configure web search in settings if provider keys are available
+    const webSearchSettings: Record<string, unknown> = {};
+    const providers: Array<{
+      type: string;
+      apiKey?: string;
+      searchEngineId?: string;
+    }> = [];
+
+    if (hasTavilyKey) {
+      providers.push({ type: 'tavily', apiKey: process.env['TAVILY_API_KEY'] });
+    }
+    if (hasGoogleKey) {
+      providers.push({
+        type: 'google',
+        apiKey: process.env['GOOGLE_API_KEY'],
+        searchEngineId: process.env['GOOGLE_SEARCH_ENGINE_ID'],
+      });
+    }
+
+    if (providers.length > 0) {
+      webSearchSettings.webSearch = {
+        provider: providers,
+        default: providers[0]?.type,
+      };
+    }
+
+    await rig.setup('should be able to search the web', {
+      settings: webSearchSettings,
+    });
 
     let result;
     try {

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@qwen-code/qwen-code",
-  "version": "0.0.14",
+  "version": "0.4.0-preview.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@qwen-code/qwen-code",
-      "version": "0.0.14",
+      "version": "0.4.0-preview.0",
       "workspaces": [
         "packages/*"
       ],
@@ -15,7 +15,7 @@
         "simple-git": "^3.28.0"
       },
       "bin": {
-        "qwen": "bundle/gemini.js"
+        "qwen": "dist/cli.js"
       },
       "devDependencies": {
         "@types/marked": "^5.0.2",
@@ -1501,28 +1501,6 @@
         "node": "^18.14.0 || ^20.0.0 || ^22.0.0 || >=24.0.0"
       }
     },
-    "node_modules/@joshua.litt/get-ripgrep": {
-      "version": "0.0.2",
-      "resolved": "https://registry.npmjs.org/@joshua.litt/get-ripgrep/-/get-ripgrep-0.0.2.tgz",
-      "integrity": "sha512-cSHA+H+HEkOXeiCxrNvGj/pgv2Y0bfp4GbH3R87zr7Vob2pDUZV3BkUL9ucHMoDFID4GteSy5z5niN/lF9QeuQ==",
-      "dependencies": {
-        "@lvce-editor/verror": "^1.6.0",
-        "execa": "^9.5.2",
-        "extract-zip": "^2.0.1",
-        "fs-extra": "^11.3.0",
-        "got": "^14.4.5",
-        "path-exists": "^5.0.0",
-        "xdg-basedir": "^5.1.0"
-      }
-    },
-    "node_modules/@joshua.litt/get-ripgrep/node_modules/path-exists": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-5.0.0.tgz",
-      "integrity": "sha512-RjhtfwJOxzcFmNOi6ltcbcu4Iu+FL3zEj83dk4kAS+fVpTxXLO1b38RvJgT/0QwvV/L3aY9TAnyv0EOqW4GoMQ==",
-      "engines": {
-        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
-      }
-    },
     "node_modules/@jridgewell/gen-mapping": {
       "version": "0.3.8",
       "resolved": "https://registry.npmjs.org/@jridgewell/gen-mapping/-/gen-mapping-0.3.8.tgz",
@@ -1720,12 +1698,6 @@
       "integrity": "sha512-GaHYm+c0O9MjZRu0ongGBRbinu8gVAMd2UZjji6jVmqKtZluZnptXGWhz1E8j8D2HJ3f/yMxKAUC0b+57wncIw==",
       "license": "MIT"
     },
-    "node_modules/@lvce-editor/verror": {
-      "version": "1.7.0",
-      "resolved": "https://registry.npmjs.org/@lvce-editor/verror/-/verror-1.7.0.tgz",
-      "integrity": "sha512-+LGuAEIC2L7pbvkyAQVWM2Go0dAy+UWEui28g07zNtZsCBhm+gusBK8PNwLJLV5Jay+TyUYuwLIbJdjLLzqEBg==",
-      "license": "MIT"
-    },
     "node_modules/@lydell/node-pty": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/@lydell/node-pty/-/node-pty-1.1.0.tgz",
@@ -3084,12 +3056,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@sec-ant/readable-stream": {
-      "version": "0.4.1",
-      "resolved": "https://registry.npmjs.org/@sec-ant/readable-stream/-/readable-stream-0.4.1.tgz",
-      "integrity": "sha512-831qok9r2t8AlxLko40y2ebgSDhenenCatLVeW/uBtnHPyhHOvG0C7TvfgecV+wHzIm5KUICgzmVpWS+IMEAeg==",
-      "license": "MIT"
-    },
     "node_modules/@secretlint/config-creator": {
       "version": "10.2.2",
       "resolved": "https://registry.npmjs.org/@secretlint/config-creator/-/config-creator-10.2.2.tgz",
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-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/lowlight": {
       "version": "3.3.0",
       "resolved": "https://registry.npmjs.org/lowlight/-/lowlight-3.3.0.tgz",
@@ -11305,18 +11021,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/mimic-response": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/mimic-response/-/mimic-response-4.0.0.tgz",
-      "integrity": "sha512-e5ISH9xMYU0DzrT+jl8q2ze9D6eWBto+I8CNpe+VI+K2J/F/k3PdkdTdz4wvGVH4NTpo+NRYTVIuMQEMMcsLqg==",
-      "license": "MIT",
-      "engines": {
-        "node": "^12.20.0 || ^14.13.1 || >=16.0.0"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/minimatch": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
@@ -11657,18 +11361,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/normalize-url": {
-      "version": "8.0.2",
-      "resolved": "https://registry.npmjs.org/normalize-url/-/normalize-url-8.0.2.tgz",
-      "integrity": "sha512-Ee/R3SyN4BuynXcnTaekmaVdbDAEiNrHqjQIA37mHU8G9pf7aaAD4ZX3XjBLo6rsdcxA/gtkcNYZLt30ACgynw==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=14.16"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/npm-normalize-package-bin": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/npm-normalize-package-bin/-/npm-normalize-package-bin-4.0.0.tgz",
@@ -11950,46 +11642,6 @@
         "node": "^18.17.0 || >=20.5.0"
       }
     },
-    "node_modules/npm-run-path": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-6.0.0.tgz",
-      "integrity": "sha512-9qny7Z9DsQU8Ou39ERsPU4OZQlSTP47ShQzuKZ6PRXpYLtIFgl/DEBYEXKlvcEa+9tHVcK8CF81Y2V72qaZhWA==",
-      "license": "MIT",
-      "dependencies": {
-        "path-key": "^4.0.0",
-        "unicorn-magic": "^0.3.0"
-      },
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
-    "node_modules/npm-run-path/node_modules/path-key": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/path-key/-/path-key-4.0.0.tgz",
-      "integrity": "sha512-haREypq7xkM7ErfgIyA0z+Bj4AGKlMSdlQE2jvJo6huWD1EdkKYV+G/T4nq0YEF2vgTT8kqMFKo1uHn950r4SQ==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=12"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
-    "node_modules/npm-run-path/node_modules/unicorn-magic": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/unicorn-magic/-/unicorn-magic-0.3.0.tgz",
-      "integrity": "sha512-+QBBXBCvifc56fsbuxZQ6Sic3wqqc3WWaqxs58gvJrcOuN83HGTCwz3oS5phzU9LthRNE9VrJCFCLUgHeeFnfA==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/nth-check": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.1.1.tgz",
@@ -12255,15 +11907,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/p-cancelable": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-4.0.1.tgz",
-      "integrity": "sha512-wBowNApzd45EIKdO1LaU+LrMBwAcjfPaYtVzV3lmfM3gf8Z4CHZsiIqlM8TZZ8okYvh5A1cP6gTfCRQtwUpaUg==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=14.16"
-      }
-    },
     "node_modules/p-limit": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-3.1.0.tgz",
@@ -12375,18 +12018,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/parse-ms": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/parse-ms/-/parse-ms-4.0.0.tgz",
-      "integrity": "sha512-TXfryirbmq34y8QBwgqCVLi+8oA3oWx2eAnSn62ITyEhEYaWRlVZ2DvMM9eZbMs/RfxPu/PK/aBLyGj4IrqMHw==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/parse-semver": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/parse-semver/-/parse-semver-1.1.1.tgz",
@@ -12773,21 +12404,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/pretty-ms": {
-      "version": "9.2.0",
-      "resolved": "https://registry.npmjs.org/pretty-ms/-/pretty-ms-9.2.0.tgz",
-      "integrity": "sha512-4yf0QO/sllf/1zbZWYnvWw3NxCQwLXKzIj0G849LSufP15BXKM0rbD2Z3wVnkMfjdn/CB0Dpp444gYAACdsplg==",
-      "license": "MIT",
-      "dependencies": {
-        "parse-ms": "^4.0.0"
-      },
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/process": {
       "version": "0.11.10",
       "resolved": "https://registry.npmjs.org/process/-/process-0.11.10.tgz",
@@ -12967,18 +12583,6 @@
       ],
       "license": "MIT"
     },
-    "node_modules/quick-lru": {
-      "version": "5.1.1",
-      "resolved": "https://registry.npmjs.org/quick-lru/-/quick-lru-5.1.1.tgz",
-      "integrity": "sha512-WuyALRjWPDGtt/wzJiadO5AXY+8hZ80hVpe6MyivgraREW751X3SbhRvG3eLKOYN+8VEvqLcf3wdnt44Z4S4SA==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=10"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/qwen-code-vscode-ide-companion": {
       "resolved": "packages/vscode-ide-companion",
       "link": true
@@ -13431,12 +13035,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/resolve-alpn": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/resolve-alpn/-/resolve-alpn-1.2.1.tgz",
-      "integrity": "sha512-0a1F4l73/ZFZOakJnQ3FvkJ2+gSTQWz/r2KE5OdDY0TxPm5h4GkqkWWfM47T7HsbnOtcJVEF4epCVy6u7Q3K+g==",
-      "license": "MIT"
-    },
     "node_modules/resolve-from": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",
@@ -13457,21 +13055,6 @@
         "url": "https://github.com/privatenumber/resolve-pkg-maps?sponsor=1"
       }
     },
-    "node_modules/responselike": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/responselike/-/responselike-3.0.0.tgz",
-      "integrity": "sha512-40yHxbNcl2+rzXvZuVkrYohathsSJlMTXKryG5y8uciHv1+xDLHQpgjG64JUO9nrEq2jGLH6IZ8BcZyw3wrweg==",
-      "license": "MIT",
-      "dependencies": {
-        "lowercase-keys": "^3.0.0"
-      },
-      "engines": {
-        "node": ">=14.16"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/restore-cursor": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-4.0.0.tgz",
@@ -14507,18 +14090,6 @@
         "node": ">=4"
       }
     },
-    "node_modules/strip-final-newline": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/strip-final-newline/-/strip-final-newline-4.0.0.tgz",
-      "integrity": "sha512-aulFJcD6YK8V1G7iRB5tigAP4TsHBZZrOV8pjV++zdUwmeV8uzbY7yn6h9MswN62adStNZFuCIx4haBnRuMDaw==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/strip-json-comments": {
       "version": "3.1.1",
       "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-3.1.1.tgz",
@@ -15125,7 +14696,6 @@
       "version": "2.8.1",
       "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.8.1.tgz",
       "integrity": "sha512-oJFu94HQb+KVduSUQL7wnpmqnfmLsOA/nAh6b6EH0wCEoK0/mPeXU6c3wKDV83MkOuHPRHtSXKKU99IBazS/2w==",
-      "dev": true,
       "license": "0BSD"
     },
     "node_modules/tsx": {
@@ -16366,18 +15936,6 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
-    "node_modules/yoctocolors": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/yoctocolors/-/yoctocolors-2.1.1.tgz",
-      "integrity": "sha512-GQHQqAopRhwU8Kt1DDM8NjibDXHC8eoh1erhGAJPEyveY9qqVeXvVikNKrDz69sHowPMorbPUrH/mx8c50eiBQ==",
-      "license": "MIT",
-      "engines": {
-        "node": ">=18"
-      },
-      "funding": {
-        "url": "https://github.com/sponsors/sindresorhus"
-      }
-    },
     "node_modules/yoctocolors-cjs": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/yoctocolors-cjs/-/yoctocolors-cjs-2.1.2.tgz",
@@ -16474,7 +16032,7 @@
     },
     "packages/cli": {
       "name": "@qwen-code/qwen-code",
-      "version": "0.0.14",
+      "version": "0.4.0-preview.0",
       "dependencies": {
         "@google/genai": "1.16.0",
         "@iarna/toml": "^2.2.5",
@@ -16589,10 +16147,10 @@
     },
     "packages/core": {
       "name": "@qwen-code/qwen-code-core",
-      "version": "0.0.14",
+      "version": "0.4.0-preview.0",
+      "hasInstallScript": true,
       "dependencies": {
         "@google/genai": "1.16.0",
-        "@joshua.litt/get-ripgrep": "^0.0.2",
         "@modelcontextprotocol/sdk": "^1.11.0",
         "@opentelemetry/api": "^1.9.0",
         "@opentelemetry/exporter-logs-otlp-grpc": "^0.203.0",
@@ -16608,6 +16166,7 @@
         "@xterm/headless": "5.5.0",
         "ajv": "^8.17.1",
         "ajv-formats": "^3.0.0",
+        "async-mutex": "^0.5.0",
         "chardet": "^2.1.0",
         "diff": "^7.0.0",
         "dotenv": "^17.1.0",
@@ -16728,7 +16287,7 @@
     },
     "packages/test-utils": {
       "name": "@qwen-code/qwen-code-test-utils",
-      "version": "0.0.14",
+      "version": "0.4.0-preview.0",
       "dev": true,
       "license": "Apache-2.0",
       "devDependencies": {
@@ -16740,7 +16299,7 @@
     },
     "packages/vscode-ide-companion": {
       "name": "qwen-code-vscode-ide-companion",
-      "version": "0.0.14",
+      "version": "0.4.0-preview.0",
       "license": "LICENSE",
       "dependencies": {
         "@modelcontextprotocol/sdk": "^1.15.1",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@qwen-code/qwen-code",
-  "version": "0.0.14",
+  "version": "0.4.0-preview.0",
   "engines": {
     "node": ">=20.0.0"
   },
@@ -13,7 +13,7 @@
     "url": "git+https://github.com/QwenLM/qwen-code.git"
   },
   "config": {
-    "sandboxImageUri": "ghcr.io/qwenlm/qwen-code:0.0.14"
+    "sandboxImageUri": "ghcr.io/qwenlm/qwen-code:0.4.0-preview.0"
   },
   "scripts": {
     "start": "cross-env node scripts/start.js",
@@ -46,6 +46,7 @@
     "lint:all": "node scripts/lint.js",
     "format": "prettier --experimental-cli --write .",
     "typecheck": "npm run typecheck --workspaces --if-present",
+    "check-i18n": "npm run check-i18n --workspace=packages/cli",
     "preflight": "npm run clean && npm ci && npm run format && npm run lint:ci && npm run build && npm run typecheck && npm run test:ci",
     "prepare": "husky && npm run bundle",
     "prepare:package": "node scripts/prepare-package.js",
@@ -63,10 +64,10 @@
     }
   },
   "bin": {
-    "qwen": "bundle/gemini.js"
+    "qwen": "dist/cli.js"
   },
   "files": [
-    "bundle/",
+    "dist/",
     "README.md",
     "LICENSE"
   ],

packages/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@qwen-code/qwen-code",
-  "version": "0.0.14",
+  "version": "0.4.0-preview.0",
   "description": "Qwen Code",
   "repository": {
     "type": "git",
@@ -8,9 +8,16 @@
   },
   "type": "module",
   "main": "dist/index.js",
+  "types": "dist/index.d.ts",
   "bin": {
     "qwen": "dist/index.js"
   },
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "import": "./dist/index.js"
+    }
+  },
   "scripts": {
     "build": "node ../../scripts/build_package.js",
     "start": "node dist/index.js",
@@ -19,13 +26,14 @@
     "format": "prettier --write .",
     "test": "vitest run",
     "test:ci": "vitest run",
-    "typecheck": "tsc --noEmit"
+    "typecheck": "tsc --noEmit",
+    "check-i18n": "tsx ../../scripts/check-i18n.ts"
   },
   "files": [
     "dist"
   ],
   "config": {
-    "sandboxImageUri": "ghcr.io/qwenlm/qwen-code:0.0.14"
+    "sandboxImageUri": "ghcr.io/qwenlm/qwen-code:0.4.0-preview.0"
   },
   "dependencies": {
     "@google/genai": "1.16.0",

packages/cli/src/acp-integration/acp.ts

@@ -7,7 +7,6 @@
 /* ACP defines a schema for a simple (experimental) JSON-RPC protocol that allows GUI applications to interact with agents. */
 
 import { z } from 'zod';
-import { EOL } from 'node:os';
 import * as schema from './schema.js';
 export * from './schema.js';
 
@@ -43,6 +42,14 @@ export class AgentSideConnection implements Client {
           const validatedParams = schema.loadSessionRequestSchema.parse(params);
           return agent.loadSession(validatedParams);
         }
+        case schema.AGENT_METHODS.session_list: {
+          if (!agent.listSessions) {
+            throw RequestError.methodNotFound();
+          }
+          const validatedParams =
+            schema.listSessionsRequestSchema.parse(params);
+          return agent.listSessions(validatedParams);
+        }
         case schema.AGENT_METHODS.authenticate: {
           const validatedParams =
             schema.authenticateRequestSchema.parse(params);
@@ -56,6 +63,13 @@ export class AgentSideConnection implements Client {
           const validatedParams = schema.cancelNotificationSchema.parse(params);
           return agent.cancel(validatedParams);
         }
+        case schema.AGENT_METHODS.session_set_mode: {
+          if (!agent.setMode) {
+            throw RequestError.methodNotFound();
+          }
+          const validatedParams = schema.setModeRequestSchema.parse(params);
+          return agent.setMode(validatedParams);
+        }
         default:
           throw RequestError.methodNotFound(method);
       }
@@ -173,7 +187,7 @@ class Connection {
     const decoder = new TextDecoder();
     for await (const chunk of output) {
       content += decoder.decode(chunk, { stream: true });
-      const lines = content.split(EOL);
+      const lines = content.split('\n');
       content = lines.pop() || '';
 
       for (const line of lines) {
@@ -361,7 +375,11 @@ export interface Agent {
   loadSession?(
     params: schema.LoadSessionRequest,
   ): Promise<schema.LoadSessionResponse>;
+  listSessions?(
+    params: schema.ListSessionsRequest,
+  ): Promise<schema.ListSessionsResponse>;
   authenticate(params: schema.AuthenticateRequest): Promise<void>;
   prompt(params: schema.PromptRequest): Promise<schema.PromptResponse>;
   cancel(params: schema.CancelNotification): Promise<void>;
+  setMode?(params: schema.SetModeRequest): Promise<schema.SetModeResponse>;
 }

packages/cli/src/acp-integration/acpAgent.ts

@@ -0,0 +1,329 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { ReadableStream, WritableStream } from 'node:stream/web';
+
+import type { Config, ConversationRecord } from '@qwen-code/qwen-code-core';
+import {
+  APPROVAL_MODE_INFO,
+  APPROVAL_MODES,
+  AuthType,
+  clearCachedCredentialFile,
+  MCPServerConfig,
+  SessionService,
+  buildApiHistoryFromConversation,
+} from '@qwen-code/qwen-code-core';
+import type { ApprovalModeValue } from './schema.js';
+import * as acp from './acp.js';
+import { AcpFileSystemService } from './service/filesystem.js';
+import { Readable, Writable } from 'node:stream';
+import type { LoadedSettings } from '../config/settings.js';
+import { SettingScope } from '../config/settings.js';
+import { z } from 'zod';
+import { ExtensionStorage, type Extension } from '../config/extension.js';
+import type { CliArgs } from '../config/config.js';
+import { loadCliConfig } from '../config/config.js';
+import { ExtensionEnablementManager } from '../config/extensions/extensionEnablement.js';
+
+// Import the modular Session class
+import { Session } from './session/Session.js';
+
+export async function runAcpAgent(
+  config: Config,
+  settings: LoadedSettings,
+  extensions: Extension[],
+  argv: CliArgs,
+) {
+  const stdout = Writable.toWeb(process.stdout) as WritableStream;
+  const stdin = Readable.toWeb(process.stdin) as ReadableStream<Uint8Array>;
+
+  // Stdout is used to send messages to the client, so console.log/console.info
+  // messages to stderr so that they don't interfere with ACP.
+  console.log = console.error;
+  console.info = console.error;
+  console.debug = console.error;
+
+  new acp.AgentSideConnection(
+    (client: acp.Client) =>
+      new GeminiAgent(config, settings, extensions, argv, client),
+    stdout,
+    stdin,
+  );
+}
+
+class GeminiAgent {
+  private sessions: Map<string, Session> = new Map();
+  private clientCapabilities: acp.ClientCapabilities | undefined;
+
+  constructor(
+    private config: Config,
+    private settings: LoadedSettings,
+    private extensions: Extension[],
+    private argv: CliArgs,
+    private client: acp.Client,
+  ) {}
+
+  async initialize(
+    args: acp.InitializeRequest,
+  ): Promise<acp.InitializeResponse> {
+    this.clientCapabilities = args.clientCapabilities;
+    const authMethods = [
+      {
+        id: AuthType.USE_OPENAI,
+        name: 'Use OpenAI API key',
+        description:
+          'Requires setting the `OPENAI_API_KEY` environment variable',
+      },
+      {
+        id: AuthType.QWEN_OAUTH,
+        name: 'Qwen OAuth',
+        description:
+          'OAuth authentication for Qwen models with 2000 daily requests',
+      },
+    ];
+
+    // Get current approval mode from config
+    const currentApprovalMode = this.config.getApprovalMode();
+
+    // Build available modes from shared APPROVAL_MODE_INFO
+    const availableModes = APPROVAL_MODES.map((mode) => ({
+      id: mode as ApprovalModeValue,
+      name: APPROVAL_MODE_INFO[mode].name,
+      description: APPROVAL_MODE_INFO[mode].description,
+    }));
+
+    const version = process.env['CLI_VERSION'] || process.version;
+
+    return {
+      protocolVersion: acp.PROTOCOL_VERSION,
+      agentInfo: {
+        name: 'qwen-code',
+        title: 'Qwen Code',
+        version,
+      },
+      authMethods,
+      modes: {
+        currentModeId: currentApprovalMode as ApprovalModeValue,
+        availableModes,
+      },
+      agentCapabilities: {
+        loadSession: true,
+        promptCapabilities: {
+          image: true,
+          audio: true,
+          embeddedContext: true,
+        },
+      },
+    };
+  }
+
+  async authenticate({ methodId }: acp.AuthenticateRequest): Promise<void> {
+    const method = z.nativeEnum(AuthType).parse(methodId);
+
+    await clearCachedCredentialFile();
+    await this.config.refreshAuth(method);
+    this.settings.setValue(
+      SettingScope.User,
+      'security.auth.selectedType',
+      method,
+    );
+  }
+
+  async newSession({
+    cwd,
+    mcpServers,
+  }: acp.NewSessionRequest): Promise<acp.NewSessionResponse> {
+    const config = await this.newSessionConfig(cwd, mcpServers);
+    await this.ensureAuthenticated(config);
+    this.setupFileSystem(config);
+
+    const session = await this.createAndStoreSession(config);
+
+    return {
+      sessionId: session.getId(),
+    };
+  }
+
+  async newSessionConfig(
+    cwd: string,
+    mcpServers: acp.McpServer[],
+    sessionId?: string,
+  ): Promise<Config> {
+    const mergedMcpServers = { ...this.settings.merged.mcpServers };
+
+    for (const { command, args, env: rawEnv, name } of mcpServers) {
+      const env: Record<string, string> = {};
+      for (const { name: envName, value } of rawEnv) {
+        env[envName] = value;
+      }
+      mergedMcpServers[name] = new MCPServerConfig(command, args, env, cwd);
+    }
+
+    const settings = { ...this.settings.merged, mcpServers: mergedMcpServers };
+
+    const argvForSession = {
+      ...this.argv,
+      resume: sessionId,
+      continue: false,
+    };
+
+    const config = await loadCliConfig(
+      settings,
+      this.extensions,
+      new ExtensionEnablementManager(
+        ExtensionStorage.getUserExtensionsDir(),
+        this.argv.extensions,
+      ),
+      argvForSession,
+      cwd,
+    );
+
+    await config.initialize();
+    return config;
+  }
+
+  async cancel(params: acp.CancelNotification): Promise<void> {
+    const session = this.sessions.get(params.sessionId);
+    if (!session) {
+      throw new Error(`Session not found: ${params.sessionId}`);
+    }
+    await session.cancelPendingPrompt();
+  }
+
+  async prompt(params: acp.PromptRequest): Promise<acp.PromptResponse> {
+    const session = this.sessions.get(params.sessionId);
+    if (!session) {
+      throw new Error(`Session not found: ${params.sessionId}`);
+    }
+    return session.prompt(params);
+  }
+
+  async loadSession(
+    params: acp.LoadSessionRequest,
+  ): Promise<acp.LoadSessionResponse> {
+    const sessionService = new SessionService(params.cwd);
+    const exists = await sessionService.sessionExists(params.sessionId);
+    if (!exists) {
+      throw acp.RequestError.invalidParams(
+        `Session not found for id: ${params.sessionId}`,
+      );
+    }
+
+    const config = await this.newSessionConfig(
+      params.cwd,
+      params.mcpServers,
+      params.sessionId,
+    );
+    await this.ensureAuthenticated(config);
+    this.setupFileSystem(config);
+
+    const sessionData = config.getResumedSessionData();
+    if (!sessionData) {
+      throw acp.RequestError.internalError(
+        `Failed to load session data for id: ${params.sessionId}`,
+      );
+    }
+
+    await this.createAndStoreSession(config, sessionData.conversation);
+
+    return null;
+  }
+
+  async listSessions(
+    params: acp.ListSessionsRequest,
+  ): Promise<acp.ListSessionsResponse> {
+    const sessionService = new SessionService(params.cwd);
+    const result = await sessionService.listSessions({
+      cursor: params.cursor,
+      size: params.size,
+    });
+
+    return {
+      items: result.items.map((item) => ({
+        sessionId: item.sessionId,
+        cwd: item.cwd,
+        startTime: item.startTime,
+        mtime: item.mtime,
+        prompt: item.prompt,
+        gitBranch: item.gitBranch,
+        filePath: item.filePath,
+        messageCount: item.messageCount,
+      })),
+      nextCursor: result.nextCursor,
+      hasMore: result.hasMore,
+    };
+  }
+
+  async setMode(params: acp.SetModeRequest): Promise<acp.SetModeResponse> {
+    const session = this.sessions.get(params.sessionId);
+    if (!session) {
+      throw new Error(`Session not found: ${params.sessionId}`);
+    }
+    return session.setMode(params);
+  }
+
+  private async ensureAuthenticated(config: Config): Promise<void> {
+    const selectedType = this.settings.merged.security?.auth?.selectedType;
+    if (!selectedType) {
+      throw acp.RequestError.authRequired();
+    }
+
+    try {
+      await config.refreshAuth(selectedType);
+    } catch (e) {
+      console.error(`Authentication failed: ${e}`);
+      throw acp.RequestError.authRequired();
+    }
+  }
+
+  private setupFileSystem(config: Config): void {
+    if (!this.clientCapabilities?.fs) {
+      return;
+    }
+
+    const acpFileSystemService = new AcpFileSystemService(
+      this.client,
+      config.getSessionId(),
+      this.clientCapabilities.fs,
+      config.getFileSystemService(),
+    );
+    config.setFileSystemService(acpFileSystemService);
+  }
+
+  private async createAndStoreSession(
+    config: Config,
+    conversation?: ConversationRecord,
+  ): Promise<Session> {
+    const sessionId = config.getSessionId();
+    const geminiClient = config.getGeminiClient();
+
+    const history = conversation
+      ? buildApiHistoryFromConversation(conversation)
+      : undefined;
+    const chat = history
+      ? await geminiClient.startChat(history)
+      : await geminiClient.startChat();
+
+    const session = new Session(
+      sessionId,
+      chat,
+      config,
+      this.client,
+      this.settings,
+    );
+    this.sessions.set(sessionId, session);
+
+    setTimeout(async () => {
+      await session.sendAvailableCommandsUpdate();
+    }, 0);
+
+    if (conversation && conversation.messages) {
+      await session.replayHistory(conversation.messages);
+    }
+
+    return session;
+  }
+}

packages/cli/src/acp-integration/schema.ts

@@ -13,6 +13,8 @@ export const AGENT_METHODS = {
   session_load: 'session/load',
   session_new: 'session/new',
   session_prompt: 'session/prompt',
+  session_list: 'session/list',
+  session_set_mode: 'session/set_mode',
 };
 
 export const CLIENT_METHODS = {
@@ -47,6 +49,9 @@ export type ReadTextFileResponse = z.infer<typeof readTextFileResponseSchema>;
 export type RequestPermissionOutcome = z.infer<
   typeof requestPermissionOutcomeSchema
 >;
+export type SessionListItem = z.infer<typeof sessionListItemSchema>;
+export type ListSessionsRequest = z.infer<typeof listSessionsRequestSchema>;
+export type ListSessionsResponse = z.infer<typeof listSessionsResponseSchema>;
 
 export type CancelNotification = z.infer<typeof cancelNotificationSchema>;
 
@@ -84,6 +89,12 @@ export type AgentCapabilities = z.infer<typeof agentCapabilitiesSchema>;
 
 export type AuthMethod = z.infer<typeof authMethodSchema>;
 
+export type ModeInfo = z.infer<typeof modeInfoSchema>;
+
+export type ModesData = z.infer<typeof modesDataSchema>;
+
+export type AgentInfo = z.infer<typeof agentInfoSchema>;
+
 export type PromptCapabilities = z.infer<typeof promptCapabilitiesSchema>;
 
 export type ClientResponse = z.infer<typeof clientResponseSchema>;
@@ -128,6 +139,20 @@ export type AgentRequest = z.infer<typeof agentRequestSchema>;
 
 export type AgentNotification = z.infer<typeof agentNotificationSchema>;
 
+export type ApprovalModeValue = z.infer<typeof approvalModeValueSchema>;
+
+export type SetModeRequest = z.infer<typeof setModeRequestSchema>;
+
+export type SetModeResponse = z.infer<typeof setModeResponseSchema>;
+
+export type AvailableCommandInput = z.infer<typeof availableCommandInputSchema>;
+
+export type AvailableCommand = z.infer<typeof availableCommandSchema>;
+
+export type AvailableCommandsUpdate = z.infer<
+  typeof availableCommandsUpdateSchema
+>;
+
 export const writeTextFileRequestSchema = z.object({
   content: z.string(),
   path: z.string(),
@@ -171,6 +196,7 @@ export const toolKindSchema = z.union([
   z.literal('execute'),
   z.literal('think'),
   z.literal('fetch'),
+  z.literal('switch_mode'),
   z.literal('other'),
 ]);
 
@@ -201,6 +227,22 @@ export const cancelNotificationSchema = z.object({
   sessionId: z.string(),
 });
 
+export const approvalModeValueSchema = z.union([
+  z.literal('plan'),
+  z.literal('default'),
+  z.literal('auto-edit'),
+  z.literal('yolo'),
+]);
+
+export const setModeRequestSchema = z.object({
+  sessionId: z.string(),
+  modeId: approvalModeValueSchema,
+});
+
+export const setModeResponseSchema = z.object({
+  modeId: approvalModeValueSchema,
+});
+
 export const authenticateRequestSchema = z.object({
   methodId: z.string(),
 });
@@ -213,6 +255,29 @@ export const newSessionResponseSchema = z.object({
 
 export const loadSessionResponseSchema = z.null();
 
+export const sessionListItemSchema = z.object({
+  cwd: z.string(),
+  filePath: z.string(),
+  gitBranch: z.string().optional(),
+  messageCount: z.number(),
+  mtime: z.number(),
+  prompt: z.string(),
+  sessionId: z.string(),
+  startTime: z.string(),
+});
+
+export const listSessionsResponseSchema = z.object({
+  hasMore: z.boolean(),
+  items: z.array(sessionListItemSchema),
+  nextCursor: z.number().optional(),
+});
+
+export const listSessionsRequestSchema = z.object({
+  cursor: z.number().optional(),
+  cwd: z.string(),
+  size: z.number().optional(),
+});
+
 export const stopReasonSchema = z.union([
   z.literal('end_turn'),
   z.literal('max_tokens'),
@@ -313,9 +378,28 @@ export const loadSessionRequestSchema = z.object({
   sessionId: z.string(),
 });
 
+export const modeInfoSchema = z.object({
+  id: approvalModeValueSchema,
+  name: z.string(),
+  description: z.string(),
+});
+
+export const modesDataSchema = z.object({
+  currentModeId: approvalModeValueSchema,
+  availableModes: z.array(modeInfoSchema),
+});
+
+export const agentInfoSchema = z.object({
+  name: z.string(),
+  title: z.string(),
+  version: z.string(),
+});
+
 export const initializeResponseSchema = z.object({
   agentCapabilities: agentCapabilitiesSchema,
+  agentInfo: agentInfoSchema,
   authMethods: z.array(authMethodSchema),
+  modes: modesDataSchema,
   protocolVersion: z.number(),
 });
 
@@ -386,6 +470,28 @@ export const promptRequestSchema = z.object({
   sessionId: z.string(),
 });
 
+export const availableCommandInputSchema = z.object({
+  hint: z.string(),
+});
+
+export const availableCommandSchema = z.object({
+  description: z.string(),
+  input: availableCommandInputSchema.nullable().optional(),
+  name: z.string(),
+});
+
+export const availableCommandsUpdateSchema = z.object({
+  availableCommands: z.array(availableCommandSchema),
+  sessionUpdate: z.literal('available_commands_update'),
+});
+
+export const currentModeUpdateSchema = z.object({
+  sessionUpdate: z.literal('current_mode_update'),
+  modeId: approvalModeValueSchema,
+});
+
+export type CurrentModeUpdate = z.infer<typeof currentModeUpdateSchema>;
+
 export const sessionUpdateSchema = z.union([
   z.object({
     content: contentBlockSchema,
@@ -414,6 +520,7 @@ export const sessionUpdateSchema = z.union([
     kind: toolKindSchema.optional().nullable(),
     locations: z.array(toolCallLocationSchema).optional().nullable(),
     rawInput: z.unknown().optional(),
+    rawOutput: z.unknown().optional(),
     sessionUpdate: z.literal('tool_call_update'),
     status: toolCallStatusSchema.optional().nullable(),
     title: z.string().optional().nullable(),
@@ -423,6 +530,8 @@ export const sessionUpdateSchema = z.union([
     entries: z.array(planEntrySchema),
     sessionUpdate: z.literal('plan'),
   }),
+  currentModeUpdateSchema,
+  availableCommandsUpdateSchema,
 ]);
 
 export const agentResponseSchema = z.union([
@@ -431,6 +540,8 @@ export const agentResponseSchema = z.union([
   newSessionResponseSchema,
   loadSessionResponseSchema,
   promptResponseSchema,
+  listSessionsResponseSchema,
+  setModeResponseSchema,
 ]);
 
 export const requestPermissionRequestSchema = z.object({
@@ -461,6 +572,8 @@ export const agentRequestSchema = z.union([
   newSessionRequestSchema,
   loadSessionRequestSchema,
   promptRequestSchema,
+  listSessionsRequestSchema,
+  setModeRequestSchema,
 ]);
 
 export const agentNotificationSchema = sessionNotificationSchema;

packages/cli/src/acp-integration/service/filesystem.ts

@@ -5,7 +5,7 @@
  */
 
 import type { FileSystemService } from '@qwen-code/qwen-code-core';
-import type * as acp from './acp.js';
+import type * as acp from '../acp.js';
 
 /**
  * ACP client-based implementation of FileSystemService

packages/cli/src/acp-integration/session/HistoryReplayer.test.ts

@@ -0,0 +1,414 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { HistoryReplayer } from './HistoryReplayer.js';
+import type { SessionContext } from './types.js';
+import type {
+  Config,
+  ChatRecord,
+  ToolRegistry,
+  ToolResultDisplay,
+  TodoResultDisplay,
+} from '@qwen-code/qwen-code-core';
+
+describe('HistoryReplayer', () => {
+  let mockContext: SessionContext;
+  let sendUpdateSpy: ReturnType<typeof vi.fn>;
+  let replayer: HistoryReplayer;
+
+  beforeEach(() => {
+    sendUpdateSpy = vi.fn().mockResolvedValue(undefined);
+    const mockToolRegistry = {
+      getTool: vi.fn().mockReturnValue(null),
+    } as unknown as ToolRegistry;
+
+    mockContext = {
+      sessionId: 'test-session-id',
+      config: {
+        getToolRegistry: () => mockToolRegistry,
+      } as unknown as Config,
+      sendUpdate: sendUpdateSpy,
+    };
+
+    replayer = new HistoryReplayer(mockContext);
+  });
+
+  const createUserRecord = (text: string): ChatRecord => ({
+    uuid: 'user-uuid',
+    parentUuid: null,
+    sessionId: 'test-session',
+    timestamp: new Date().toISOString(),
+    type: 'user',
+    cwd: '/test',
+    version: '1.0.0',
+    message: {
+      role: 'user',
+      parts: [{ text }],
+    },
+  });
+
+  const createAssistantRecord = (
+    text: string,
+    thought = false,
+  ): ChatRecord => ({
+    uuid: 'assistant-uuid',
+    parentUuid: 'user-uuid',
+    sessionId: 'test-session',
+    timestamp: new Date().toISOString(),
+    type: 'assistant',
+    cwd: '/test',
+    version: '1.0.0',
+    message: {
+      role: 'model',
+      parts: [{ text, thought }],
+    },
+  });
+
+  const createToolResultRecord = (
+    toolName: string,
+    resultDisplay?: ToolResultDisplay,
+    hasError = false,
+  ): ChatRecord => ({
+    uuid: 'tool-uuid',
+    parentUuid: 'assistant-uuid',
+    sessionId: 'test-session',
+    timestamp: new Date().toISOString(),
+    type: 'tool_result',
+    cwd: '/test',
+    version: '1.0.0',
+    message: {
+      role: 'user',
+      parts: [
+        {
+          functionResponse: {
+            name: toolName,
+            response: { result: 'ok' },
+          },
+        },
+      ],
+    },
+    toolCallResult: {
+      callId: 'call-123',
+      responseParts: [],
+      resultDisplay,
+      error: hasError ? new Error('Tool failed') : undefined,
+      errorType: undefined,
+    },
+  });
+
+  describe('replay', () => {
+    it('should replay empty records array', async () => {
+      await replayer.replay([]);
+
+      expect(sendUpdateSpy).not.toHaveBeenCalled();
+    });
+
+    it('should replay records in order', async () => {
+      const records = [
+        createUserRecord('Hello'),
+        createAssistantRecord('Hi there'),
+      ];
+
+      await replayer.replay(records);
+
+      expect(sendUpdateSpy).toHaveBeenCalledTimes(2);
+      expect(sendUpdateSpy.mock.calls[0][0].sessionUpdate).toBe(
+        'user_message_chunk',
+      );
+      expect(sendUpdateSpy.mock.calls[1][0].sessionUpdate).toBe(
+        'agent_message_chunk',
+      );
+    });
+  });
+
+  describe('user message replay', () => {
+    it('should emit user_message_chunk for user records', async () => {
+      const records = [createUserRecord('Hello, world!')];
+
+      await replayer.replay(records);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'user_message_chunk',
+        content: { type: 'text', text: 'Hello, world!' },
+      });
+    });
+
+    it('should skip user records without message', async () => {
+      const record: ChatRecord = {
+        ...createUserRecord('test'),
+        message: undefined,
+      };
+
+      await replayer.replay([record]);
+
+      expect(sendUpdateSpy).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('assistant message replay', () => {
+    it('should emit agent_message_chunk for assistant records', async () => {
+      const records = [createAssistantRecord('I can help with that.')];
+
+      await replayer.replay(records);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'agent_message_chunk',
+        content: { type: 'text', text: 'I can help with that.' },
+      });
+    });
+
+    it('should emit agent_thought_chunk for thought parts', async () => {
+      const records = [createAssistantRecord('Thinking about this...', true)];
+
+      await replayer.replay(records);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'agent_thought_chunk',
+        content: { type: 'text', text: 'Thinking about this...' },
+      });
+    });
+
+    it('should handle assistant records with multiple parts', async () => {
+      const record: ChatRecord = {
+        ...createAssistantRecord('First'),
+        message: {
+          role: 'model',
+          parts: [
+            { text: 'First part' },
+            { text: 'Second part', thought: true },
+            { text: 'Third part' },
+          ],
+        },
+      };
+
+      await replayer.replay([record]);
+
+      expect(sendUpdateSpy).toHaveBeenCalledTimes(3);
+      expect(sendUpdateSpy.mock.calls[0][0]).toEqual({
+        sessionUpdate: 'agent_message_chunk',
+        content: { type: 'text', text: 'First part' },
+      });
+      expect(sendUpdateSpy.mock.calls[1][0]).toEqual({
+        sessionUpdate: 'agent_thought_chunk',
+        content: { type: 'text', text: 'Second part' },
+      });
+      expect(sendUpdateSpy.mock.calls[2][0]).toEqual({
+        sessionUpdate: 'agent_message_chunk',
+        content: { type: 'text', text: 'Third part' },
+      });
+    });
+  });
+
+  describe('function call replay', () => {
+    it('should emit tool_call for function call parts', async () => {
+      const record: ChatRecord = {
+        ...createAssistantRecord(''),
+        message: {
+          role: 'model',
+          parts: [
+            {
+              functionCall: {
+                name: 'read_file',
+                args: { path: '/test.ts' },
+              },
+            },
+          ],
+        },
+      };
+
+      await replayer.replay([record]);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionUpdate: 'tool_call',
+          status: 'in_progress',
+          title: 'read_file',
+          rawInput: { path: '/test.ts' },
+        }),
+      );
+    });
+
+    it('should use function call id as callId when available', async () => {
+      const record: ChatRecord = {
+        ...createAssistantRecord(''),
+        message: {
+          role: 'model',
+          parts: [
+            {
+              functionCall: {
+                id: 'custom-call-id',
+                name: 'read_file',
+                args: {},
+              },
+            },
+          ],
+        },
+      };
+
+      await replayer.replay([record]);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          toolCallId: 'custom-call-id',
+        }),
+      );
+    });
+  });
+
+  describe('tool result replay', () => {
+    it('should emit tool_call_update for tool result records', async () => {
+      const records = [
+        createToolResultRecord('read_file', 'File contents here'),
+      ];
+
+      await replayer.replay(records);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'tool_call_update',
+        toolCallId: 'call-123',
+        status: 'completed',
+        content: [
+          {
+            type: 'content',
+            // Content comes from functionResponse.response (stringified)
+            content: { type: 'text', text: '{"result":"ok"}' },
+          },
+        ],
+        // resultDisplay is included as rawOutput
+        rawOutput: 'File contents here',
+      });
+    });
+
+    it('should emit failed status for tool results with errors', async () => {
+      const records = [createToolResultRecord('failing_tool', undefined, true)];
+
+      await replayer.replay(records);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionUpdate: 'tool_call_update',
+          status: 'failed',
+        }),
+      );
+    });
+
+    it('should emit plan update for TodoWriteTool results', async () => {
+      const todoDisplay: TodoResultDisplay = {
+        type: 'todo_list',
+        todos: [
+          { id: '1', content: 'Task 1', status: 'pending' },
+          { id: '2', content: 'Task 2', status: 'completed' },
+        ],
+      };
+      const record = createToolResultRecord('todo_write', todoDisplay);
+      // Override the function response name
+      record.message = {
+        role: 'user',
+        parts: [
+          {
+            functionResponse: {
+              name: 'todo_write',
+              response: { result: 'ok' },
+            },
+          },
+        ],
+      };
+
+      await replayer.replay([record]);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'plan',
+        entries: [
+          { content: 'Task 1', priority: 'medium', status: 'pending' },
+          { content: 'Task 2', priority: 'medium', status: 'completed' },
+        ],
+      });
+    });
+
+    it('should use record uuid as callId when toolCallResult.callId is missing', async () => {
+      const record: ChatRecord = {
+        ...createToolResultRecord('test_tool'),
+        uuid: 'fallback-uuid',
+        toolCallResult: {
+          callId: undefined as unknown as string,
+          responseParts: [],
+          resultDisplay: 'Result',
+          error: undefined,
+          errorType: undefined,
+        },
+      };
+
+      await replayer.replay([record]);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          toolCallId: 'fallback-uuid',
+        }),
+      );
+    });
+  });
+
+  describe('system records', () => {
+    it('should skip system records', async () => {
+      const systemRecord: ChatRecord = {
+        uuid: 'system-uuid',
+        parentUuid: null,
+        sessionId: 'test-session',
+        timestamp: new Date().toISOString(),
+        type: 'system',
+        subtype: 'chat_compression',
+        cwd: '/test',
+        version: '1.0.0',
+      };
+
+      await replayer.replay([systemRecord]);
+
+      expect(sendUpdateSpy).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('mixed record types', () => {
+    it('should handle a complete conversation replay', async () => {
+      const records: ChatRecord[] = [
+        createUserRecord('Read the file test.ts'),
+        {
+          ...createAssistantRecord(''),
+          message: {
+            role: 'model',
+            parts: [
+              { text: "I'll read that file for you.", thought: true },
+              {
+                functionCall: {
+                  id: 'call-read',
+                  name: 'read_file',
+                  args: { path: 'test.ts' },
+                },
+              },
+            ],
+          },
+        },
+        createToolResultRecord('read_file', 'export const x = 1;'),
+        createAssistantRecord('The file contains a simple export.'),
+      ];
+
+      await replayer.replay(records);
+
+      // Verify order and types of updates
+      const updateTypes = sendUpdateSpy.mock.calls.map(
+        (call: unknown[]) =>
+          (call[0] as { sessionUpdate: string }).sessionUpdate,
+      );
+      expect(updateTypes).toEqual([
+        'user_message_chunk',
+        'agent_thought_chunk',
+        'tool_call',
+        'tool_call_update',
+        'agent_message_chunk',
+      ]);
+    });
+  });
+});

packages/cli/src/acp-integration/session/HistoryReplayer.ts

@@ -0,0 +1,137 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { ChatRecord } from '@qwen-code/qwen-code-core';
+import type { Content } from '@google/genai';
+import type { SessionContext } from './types.js';
+import { MessageEmitter } from './emitters/MessageEmitter.js';
+import { ToolCallEmitter } from './emitters/ToolCallEmitter.js';
+
+/**
+ * Handles replaying session history on session load.
+ *
+ * Uses the unified emitters to ensure consistency with normal flow.
+ * This ensures that replayed history looks identical to how it would
+ * have appeared during the original session.
+ */
+export class HistoryReplayer {
+  private readonly messageEmitter: MessageEmitter;
+  private readonly toolCallEmitter: ToolCallEmitter;
+
+  constructor(ctx: SessionContext) {
+    this.messageEmitter = new MessageEmitter(ctx);
+    this.toolCallEmitter = new ToolCallEmitter(ctx);
+  }
+
+  /**
+   * Replays all chat records from a loaded session.
+   *
+   * @param records - Array of chat records to replay
+   */
+  async replay(records: ChatRecord[]): Promise<void> {
+    for (const record of records) {
+      await this.replayRecord(record);
+    }
+  }
+
+  /**
+   * Replays a single chat record.
+   */
+  private async replayRecord(record: ChatRecord): Promise<void> {
+    switch (record.type) {
+      case 'user':
+        if (record.message) {
+          await this.replayContent(record.message, 'user');
+        }
+        break;
+
+      case 'assistant':
+        if (record.message) {
+          await this.replayContent(record.message, 'assistant');
+        }
+        break;
+
+      case 'tool_result':
+        await this.replayToolResult(record);
+        break;
+
+      default:
+        // Skip system records (compression, telemetry, slash commands)
+        break;
+    }
+  }
+
+  /**
+   * Replays content from a message (user or assistant).
+   * Handles text parts, thought parts, and function calls.
+   */
+  private async replayContent(
+    content: Content,
+    role: 'user' | 'assistant',
+  ): Promise<void> {
+    for (const part of content.parts ?? []) {
+      // Text content
+      if ('text' in part && part.text) {
+        const isThought = (part as { thought?: boolean }).thought ?? false;
+        await this.messageEmitter.emitMessage(part.text, role, isThought);
+      }
+
+      // Function call (tool start)
+      if ('functionCall' in part && part.functionCall) {
+        const functionName = part.functionCall.name ?? '';
+        const callId = part.functionCall.id ?? `${functionName}-${Date.now()}`;
+
+        await this.toolCallEmitter.emitStart({
+          toolName: functionName,
+          callId,
+          args: part.functionCall.args as Record<string, unknown>,
+        });
+      }
+    }
+  }
+
+  /**
+   * Replays a tool result record.
+   */
+  private async replayToolResult(record: ChatRecord): Promise<void> {
+    // message is required - skip if not present
+    if (!record.message?.parts) {
+      return;
+    }
+
+    const result = record.toolCallResult;
+    const callId = result?.callId ?? record.uuid;
+
+    // Extract tool name from the function response in message if available
+    const toolName = this.extractToolNameFromRecord(record);
+
+    await this.toolCallEmitter.emitResult({
+      toolName,
+      callId,
+      success: !result?.error,
+      message: record.message.parts,
+      resultDisplay: result?.resultDisplay,
+      // For TodoWriteTool fallback, try to extract args from the record
+      // Note: args aren't stored in tool_result records by default
+      args: undefined,
+    });
+  }
+
+  /**
+   * Extracts tool name from a chat record's function response.
+   */
+  private extractToolNameFromRecord(record: ChatRecord): string {
+    // Try to get from functionResponse in message
+    if (record.message?.parts) {
+      for (const part of record.message.parts) {
+        if ('functionResponse' in part && part.functionResponse?.name) {
+          return part.functionResponse.name;
+        }
+      }
+    }
+    return '';
+  }
+}

packages/cli/src/acp-integration/session/Session.ts

@@ -1,244 +1,118 @@
 /**
  * @license
- * Copyright 2025 Google LLC
+ * Copyright 2025 Qwen
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import type { ReadableStream, WritableStream } from 'node:stream/web';
-
 import type { Content, FunctionCall, Part } from '@google/genai';
 import type {
   Config,
   GeminiChat,
   ToolCallConfirmationDetails,
   ToolResult,
+  ChatRecord,
+  SubAgentEventEmitter,
 } from '@qwen-code/qwen-code-core';
 import {
-  AuthType,
-  clearCachedCredentialFile,
+  ApprovalMode,
   convertToFunctionResponse,
   DiscoveredMCPTool,
   StreamEventType,
-  DEFAULT_GEMINI_MODEL,
-  DEFAULT_GEMINI_MODEL_AUTO,
-  DEFAULT_GEMINI_FLASH_MODEL,
-  MCPServerConfig,
   ToolConfirmationOutcome,
   logToolCall,
+  logUserPrompt,
   getErrorStatus,
   isWithinRoot,
   isNodeError,
+  TaskTool,
+  UserPromptEvent,
+  TodoWriteTool,
+  ExitPlanModeTool,
 } from '@qwen-code/qwen-code-core';
-import * as acp from './acp.js';
-import { AcpFileSystemService } from './fileSystemService.js';
-import { Readable, Writable } from 'node:stream';
-import type { LoadedSettings } from '../config/settings.js';
-import { SettingScope } from '../config/settings.js';
+
+import * as acp from '../acp.js';
+import type { LoadedSettings } from '../../config/settings.js';
 import * as fs from 'node:fs/promises';
 import * as path from 'node:path';
 import { z } from 'zod';
-import { randomUUID } from 'node:crypto';
-import { getErrorMessage } from '../utils/errors.js';
-import { ExtensionStorage, type Extension } from '../config/extension.js';
-import type { CliArgs } from '../config/config.js';
-import { loadCliConfig } from '../config/config.js';
-import { ExtensionEnablementManager } from '../config/extensions/extensionEnablement.js';
+import { getErrorMessage } from '../../utils/errors.js';
+import {
+  handleSlashCommand,
+  getAvailableCommands,
+} from '../../nonInteractiveCliCommands.js';
+import type {
+  AvailableCommand,
+  AvailableCommandsUpdate,
+  SetModeRequest,
+  SetModeResponse,
+  ApprovalModeValue,
+  CurrentModeUpdate,
+} from '../schema.js';
+import { isSlashCommand } from '../../ui/utils/commandUtils.js';
+
+// Import modular session components
+import type { SessionContext, ToolCallStartParams } from './types.js';
+import { HistoryReplayer } from './HistoryReplayer.js';
+import { ToolCallEmitter } from './emitters/ToolCallEmitter.js';
+import { PlanEmitter } from './emitters/PlanEmitter.js';
+import { SubAgentTracker } from './SubAgentTracker.js';
 
 /**
- * Resolves the model to use based on the current configuration.
- *
- * If the model is set to "auto", it will use the flash model if in fallback
- * mode, otherwise it will use the default model.
+ * Built-in commands that are allowed in ACP integration mode.
+ * Only safe, read-only commands that don't require interactive UI.
  */
-export function resolveModel(model: string, isInFallbackMode: boolean): string {
-  if (model === DEFAULT_GEMINI_MODEL_AUTO) {
-    return isInFallbackMode ? DEFAULT_GEMINI_FLASH_MODEL : DEFAULT_GEMINI_MODEL;
-  }
-  return model;
-}
+export const ALLOWED_BUILTIN_COMMANDS_FOR_ACP = ['init'];
 
-export async function runZedIntegration(
-  config: Config,
-  settings: LoadedSettings,
-  extensions: Extension[],
-  argv: CliArgs,
-) {
-  const stdout = Writable.toWeb(process.stdout) as WritableStream;
-  const stdin = Readable.toWeb(process.stdin) as ReadableStream<Uint8Array>;
-
-  // Stdout is used to send messages to the client, so console.log/console.info
-  // messages to stderr so that they don't interfere with ACP.
-  console.log = console.error;
-  console.info = console.error;
-  console.debug = console.error;
-
-  new acp.AgentSideConnection(
-    (client: acp.Client) =>
-      new GeminiAgent(config, settings, extensions, argv, client),
-    stdout,
-    stdin,
-  );
-}
-
-class GeminiAgent {
-  private sessions: Map<string, Session> = new Map();
-  private clientCapabilities: acp.ClientCapabilities | undefined;
-
-  constructor(
-    private config: Config,
-    private settings: LoadedSettings,
-    private extensions: Extension[],
-    private argv: CliArgs,
-    private client: acp.Client,
-  ) {}
-
-  async initialize(
-    args: acp.InitializeRequest,
-  ): Promise<acp.InitializeResponse> {
-    this.clientCapabilities = args.clientCapabilities;
-    const authMethods = [
-      {
-        id: AuthType.USE_OPENAI,
-        name: 'Use OpenAI API key',
-        description:
-          'Requires setting the `OPENAI_API_KEY` environment variable',
-      },
-      {
-        id: AuthType.QWEN_OAUTH,
-        name: 'Qwen OAuth',
-        description:
-          'OAuth authentication for Qwen models with 2000 daily requests',
-      },
-    ];
-
-    return {
-      protocolVersion: acp.PROTOCOL_VERSION,
-      authMethods,
-      agentCapabilities: {
-        loadSession: false,
-        promptCapabilities: {
-          image: true,
-          audio: true,
-          embeddedContext: true,
-        },
-      },
-    };
-  }
-
-  async authenticate({ methodId }: acp.AuthenticateRequest): Promise<void> {
-    const method = z.nativeEnum(AuthType).parse(methodId);
-
-    await clearCachedCredentialFile();
-    await this.config.refreshAuth(method);
-    this.settings.setValue(
-      SettingScope.User,
-      'security.auth.selectedType',
-      method,
-    );
-  }
-
-  async newSession({
-    cwd,
-    mcpServers,
-  }: acp.NewSessionRequest): Promise<acp.NewSessionResponse> {
-    const sessionId = randomUUID();
-    const config = await this.newSessionConfig(sessionId, cwd, mcpServers);
-
-    let isAuthenticated = false;
-    if (this.settings.merged.security?.auth?.selectedType) {
-      try {
-        await config.refreshAuth(
-          this.settings.merged.security.auth.selectedType,
-        );
-        isAuthenticated = true;
-      } catch (e) {
-        console.error(`Authentication failed: ${e}`);
-      }
-    }
-
-    if (!isAuthenticated) {
-      throw acp.RequestError.authRequired();
-    }
-
-    if (this.clientCapabilities?.fs) {
-      const acpFileSystemService = new AcpFileSystemService(
-        this.client,
-        sessionId,
-        this.clientCapabilities.fs,
-        config.getFileSystemService(),
-      );
-      config.setFileSystemService(acpFileSystemService);
-    }
-
-    const geminiClient = config.getGeminiClient();
-    const chat = await geminiClient.startChat();
-    const session = new Session(sessionId, chat, config, this.client);
-    this.sessions.set(sessionId, session);
-
-    return {
-      sessionId,
-    };
-  }
-
-  async newSessionConfig(
-    sessionId: string,
-    cwd: string,
-    mcpServers: acp.McpServer[],
-  ): Promise<Config> {
-    const mergedMcpServers = { ...this.settings.merged.mcpServers };
-
-    for (const { command, args, env: rawEnv, name } of mcpServers) {
-      const env: Record<string, string> = {};
-      for (const { name: envName, value } of rawEnv) {
-        env[envName] = value;
-      }
-      mergedMcpServers[name] = new MCPServerConfig(command, args, env, cwd);
-    }
-
-    const settings = { ...this.settings.merged, mcpServers: mergedMcpServers };
-
-    const config = await loadCliConfig(
-      settings,
-      this.extensions,
-      new ExtensionEnablementManager(
-        ExtensionStorage.getUserExtensionsDir(),
-        this.argv.extensions,
-      ),
-      sessionId,
-      this.argv,
-      cwd,
-    );
-
-    await config.initialize();
-    return config;
-  }
-
-  async cancel(params: acp.CancelNotification): Promise<void> {
-    const session = this.sessions.get(params.sessionId);
-    if (!session) {
-      throw new Error(`Session not found: ${params.sessionId}`);
-    }
-    await session.cancelPendingPrompt();
-  }
-
-  async prompt(params: acp.PromptRequest): Promise<acp.PromptResponse> {
-    const session = this.sessions.get(params.sessionId);
-    if (!session) {
-      throw new Error(`Session not found: ${params.sessionId}`);
-    }
-    return session.prompt(params);
-  }
-}
-
-class Session {
+/**
+ * Session represents an active conversation session with the AI model.
+ * It uses modular components for consistent event emission:
+ * - HistoryReplayer for replaying past conversations
+ * - ToolCallEmitter for tool-related session updates
+ * - PlanEmitter for todo/plan updates
+ * - SubAgentTracker for tracking sub-agent tool calls
+ */
+export class Session implements SessionContext {
   private pendingPrompt: AbortController | null = null;
+  private turn: number = 0;
+
+  // Modular components
+  private readonly historyReplayer: HistoryReplayer;
+  private readonly toolCallEmitter: ToolCallEmitter;
+  private readonly planEmitter: PlanEmitter;
+
+  // Implement SessionContext interface
+  readonly sessionId: string;
 
   constructor(
-    private readonly id: string,
+    id: string,
     private readonly chat: GeminiChat,
-    private readonly config: Config,
+    readonly config: Config,
     private readonly client: acp.Client,
-  ) {}
+    private readonly settings: LoadedSettings,
+  ) {
+    this.sessionId = id;
+
+    // Initialize modular components with this session as context
+    this.toolCallEmitter = new ToolCallEmitter(this);
+    this.planEmitter = new PlanEmitter(this);
+    this.historyReplayer = new HistoryReplayer(this);
+  }
+
+  getId(): string {
+    return this.sessionId;
+  }
+
+  getConfig(): Config {
+    return this.config;
+  }
+
+  /**
+   * Replays conversation history to the client using modular components.
+   * Delegates to HistoryReplayer for consistent event emission.
+   */
+  async replayHistory(records: ChatRecord[]): Promise<void> {
+    await this.historyReplayer.replay(records);
+  }
 
   async cancelPendingPrompt(): Promise<void> {
     if (!this.pendingPrompt) {
@@ -254,10 +128,60 @@ class Session {
     const pendingSend = new AbortController();
     this.pendingPrompt = pendingSend;
 
-    const promptId = Math.random().toString(16).slice(2);
-    const chat = this.chat;
+    // Increment turn counter for each user prompt
+    this.turn += 1;
 
-    const parts = await this.#resolvePrompt(params.prompt, pendingSend.signal);
+    const chat = this.chat;
+    const promptId = this.config.getSessionId() + '########' + this.turn;
+
+    // Extract text from all text blocks to construct the full prompt text for logging
+    const promptText = params.prompt
+      .filter((block) => block.type === 'text')
+      .map((block) => (block.type === 'text' ? block.text : ''))
+      .join(' ');
+
+    // Log user prompt
+    logUserPrompt(
+      this.config,
+      new UserPromptEvent(
+        promptText.length,
+        promptId,
+        this.config.getContentGeneratorConfig()?.authType,
+        promptText,
+      ),
+    );
+
+    // record user message for session management
+    this.config.getChatRecordingService()?.recordUserMessage(promptText);
+
+    // Check if the input contains a slash command
+    // Extract text from the first text block if present
+    const firstTextBlock = params.prompt.find((block) => block.type === 'text');
+    const inputText = firstTextBlock?.text || '';
+
+    let parts: Part[];
+
+    if (isSlashCommand(inputText)) {
+      // Handle slash command - allow specific built-in commands for ACP integration
+      const slashCommandResult = await handleSlashCommand(
+        inputText,
+        pendingSend,
+        this.config,
+        this.settings,
+        ALLOWED_BUILTIN_COMMANDS_FOR_ACP,
+      );
+
+      if (slashCommandResult) {
+        // Use the result from the slash command
+        parts = slashCommandResult as Part[];
+      } else {
+        // Slash command didn't return a prompt, continue with normal processing
+        parts = await this.#resolvePrompt(params.prompt, pendingSend.signal);
+      }
+    } else {
+      // Normal processing for non-slash commands
+      parts = await this.#resolvePrompt(params.prompt, pendingSend.signal);
+    }
 
     let nextMessage: Content | null = { role: 'user', parts };
 
@@ -271,7 +195,7 @@ class Session {
 
       try {
         const responseStream = await chat.sendMessageStream(
-          resolveModel(this.config.getModel(), this.config.isInFallbackMode()),
+          this.config.getModel(),
           {
             message: nextMessage?.parts ?? [],
             config: {
@@ -342,15 +266,102 @@ class Session {
     return { stopReason: 'end_turn' };
   }
 
-  private async sendUpdate(update: acp.SessionUpdate): Promise<void> {
+  async sendUpdate(update: acp.SessionUpdate): Promise<void> {
     const params: acp.SessionNotification = {
-      sessionId: this.id,
+      sessionId: this.sessionId,
       update,
     };
 
     await this.client.sessionUpdate(params);
   }
 
+  async sendAvailableCommandsUpdate(): Promise<void> {
+    const abortController = new AbortController();
+    try {
+      const slashCommands = await getAvailableCommands(
+        this.config,
+        this.settings,
+        abortController.signal,
+        ALLOWED_BUILTIN_COMMANDS_FOR_ACP,
+      );
+
+      // Convert SlashCommand[] to AvailableCommand[] format for ACP protocol
+      const availableCommands: AvailableCommand[] = slashCommands.map(
+        (cmd) => ({
+          name: cmd.name,
+          description: cmd.description,
+          input: null,
+        }),
+      );
+
+      const update: AvailableCommandsUpdate = {
+        sessionUpdate: 'available_commands_update',
+        availableCommands,
+      };
+
+      await this.sendUpdate(update);
+    } catch (error) {
+      // Log error but don't fail session creation
+      console.error('Error sending available commands update:', error);
+    }
+  }
+
+  /**
+   * Requests permission from the client for a tool call.
+   * Used by SubAgentTracker for sub-agent approval requests.
+   */
+  async requestPermission(
+    params: acp.RequestPermissionRequest,
+  ): Promise<acp.RequestPermissionResponse> {
+    return this.client.requestPermission(params);
+  }
+
+  /**
+   * Sets the approval mode for the current session.
+   * Maps ACP approval mode values to core ApprovalMode enum.
+   */
+  async setMode(params: SetModeRequest): Promise<SetModeResponse> {
+    const modeMap: Record<ApprovalModeValue, ApprovalMode> = {
+      plan: ApprovalMode.PLAN,
+      default: ApprovalMode.DEFAULT,
+      'auto-edit': ApprovalMode.AUTO_EDIT,
+      yolo: ApprovalMode.YOLO,
+    };
+
+    const approvalMode = modeMap[params.modeId];
+    this.config.setApprovalMode(approvalMode);
+
+    return { modeId: params.modeId };
+  }
+
+  /**
+   * Sends a current_mode_update notification to the client.
+   * Called after the agent switches modes (e.g., from exit_plan_mode tool).
+   */
+  private async sendCurrentModeUpdateNotification(
+    outcome: ToolConfirmationOutcome,
+  ): Promise<void> {
+    // Determine the new mode based on the approval outcome
+    // This mirrors the logic in ExitPlanModeTool.onConfirm
+    let newModeId: ApprovalModeValue;
+    switch (outcome) {
+      case ToolConfirmationOutcome.ProceedAlways:
+        newModeId = 'auto-edit';
+        break;
+      case ToolConfirmationOutcome.ProceedOnce:
+      default:
+        newModeId = 'default';
+        break;
+    }
+
+    const update: CurrentModeUpdate = {
+      sessionUpdate: 'current_mode_update',
+      modeId: newModeId,
+    };
+
+    await this.sendUpdate(update);
+  }
+
   private async runTool(
     abortSignal: AbortSignal,
     promptId: string,
@@ -403,9 +414,35 @@ class Session {
       );
     }
 
+    // Detect TodoWriteTool early - route to plan updates instead of tool_call events
+    const isTodoWriteTool = tool.name === TodoWriteTool.Name;
+    const isTaskTool = tool.name === TaskTool.Name;
+    const isExitPlanModeTool = tool.name === ExitPlanModeTool.Name;
+
+    // Track cleanup functions for sub-agent event listeners
+    let subAgentCleanupFunctions: Array<() => void> = [];
+
     try {
       const invocation = tool.build(args);
 
+      if (isTaskTool && 'eventEmitter' in invocation) {
+        // Access eventEmitter from TaskTool invocation
+        const taskEventEmitter = (
+          invocation as {
+            eventEmitter: SubAgentEventEmitter;
+          }
+        ).eventEmitter;
+
+        // Create a SubAgentTracker for this tool execution
+        const subAgentTracker = new SubAgentTracker(this, this.client);
+
+        // Set up sub-agent tool tracking
+        subAgentCleanupFunctions = subAgentTracker.setup(
+          taskEventEmitter,
+          abortSignal,
+        );
+      }
+
       const confirmationDetails =
         await invocation.shouldConfirmExecute(abortSignal);
 
@@ -421,8 +458,22 @@ class Session {
           });
         }
 
+        // Add plan content for exit_plan_mode
+        if (confirmationDetails.type === 'plan') {
+          content.push({
+            type: 'content',
+            content: {
+              type: 'text',
+              text: confirmationDetails.plan,
+            },
+          });
+        }
+
+        // Map tool kind, using switch_mode for exit_plan_mode per ACP spec
+        const mappedKind = this.toolCallEmitter.mapToolKind(tool.kind, fc.name);
+
         const params: acp.RequestPermissionRequest = {
-          sessionId: this.id,
+          sessionId: this.sessionId,
           options: toPermissionOptions(confirmationDetails),
           toolCall: {
             toolCallId: callId,
@@ -430,7 +481,7 @@ class Session {
             title: invocation.getDescription(),
             content,
             locations: invocation.toolLocations(),
-            kind: tool.kind,
+            kind: mappedKind,
           },
         };
 
@@ -444,6 +495,11 @@ class Session {
 
         await confirmationDetails.onConfirm(outcome);
 
+        // After exit_plan_mode confirmation, send current_mode_update notification
+        if (isExitPlanModeTool && outcome !== ToolConfirmationOutcome.Cancel) {
+          await this.sendCurrentModeUpdateNotification(outcome);
+        }
+
         switch (outcome) {
           case ToolConfirmationOutcome.Cancel:
             return errorResponse(
@@ -460,27 +516,59 @@ class Session {
             throw new Error(`Unexpected: ${resultOutcome}`);
           }
         }
-      } else {
-        await this.sendUpdate({
-          sessionUpdate: 'tool_call',
-          toolCallId: callId,
-          status: 'in_progress',
-          title: invocation.getDescription(),
-          content: [],
-          locations: invocation.toolLocations(),
-          kind: tool.kind,
-        });
+      } else if (!isTodoWriteTool) {
+        // Skip tool_call event for TodoWriteTool - use ToolCallEmitter
+        const startParams: ToolCallStartParams = {
+          callId,
+          toolName: fc.name,
+          args,
+        };
+        await this.toolCallEmitter.emitStart(startParams);
       }
 
       const toolResult: ToolResult = await invocation.execute(abortSignal);
-      const content = toToolCallContent(toolResult);
 
-      await this.sendUpdate({
-        sessionUpdate: 'tool_call_update',
-        toolCallId: callId,
-        status: 'completed',
-        content: content ? [content] : [],
-      });
+      // Clean up event listeners
+      subAgentCleanupFunctions.forEach((cleanup) => cleanup());
+
+      // Create response parts first (needed for emitResult and recordToolResult)
+      const responseParts = convertToFunctionResponse(
+        fc.name,
+        callId,
+        toolResult.llmContent,
+      );
+
+      // Handle TodoWriteTool: extract todos and send plan update
+      if (isTodoWriteTool) {
+        const todos = this.planEmitter.extractTodos(
+          toolResult.returnDisplay,
+          args,
+        );
+
+        // Match original logic: emit plan if todos.length > 0 OR if args had todos
+        if ((todos && todos.length > 0) || Array.isArray(args['todos'])) {
+          await this.planEmitter.emitPlan(todos ?? []);
+        }
+
+        // Skip tool_call_update event for TodoWriteTool
+        // Still log and return function response for LLM
+      } else {
+        // Normal tool handling: emit result using ToolCallEmitter
+        // Convert toolResult.error to Error type if present
+        const error = toolResult.error
+          ? new Error(toolResult.error.message)
+          : undefined;
+
+        await this.toolCallEmitter.emitResult({
+          callId,
+          toolName: fc.name,
+          args,
+          message: responseParts,
+          resultDisplay: toolResult.returnDisplay,
+          error,
+          success: !toolResult.error,
+        });
+      }
 
       const durationMs = Date.now() - startTime;
       logToolCall(this.config, {
@@ -498,17 +586,41 @@ class Session {
             : 'native',
       });
 
-      return convertToFunctionResponse(fc.name, callId, toolResult.llmContent);
+      // Record tool result for session management
+      this.config.getChatRecordingService()?.recordToolResult(responseParts, {
+        callId,
+        status: 'success',
+        resultDisplay: toolResult.returnDisplay,
+        error: undefined,
+        errorType: undefined,
+      });
+
+      return responseParts;
     } catch (e) {
+      // Ensure cleanup on error
+      subAgentCleanupFunctions.forEach((cleanup) => cleanup());
+
       const error = e instanceof Error ? e : new Error(String(e));
 
-      await this.sendUpdate({
-        sessionUpdate: 'tool_call_update',
-        toolCallId: callId,
-        status: 'failed',
-        content: [
-          { type: 'content', content: { type: 'text', text: error.message } },
-        ],
+      // Use ToolCallEmitter for error handling
+      await this.toolCallEmitter.emitError(callId, error);
+
+      // Record tool error for session management
+      const errorParts = [
+        {
+          functionResponse: {
+            id: callId,
+            name: fc.name ?? '',
+            response: { error: error.message },
+          },
+        },
+      ];
+      this.config.getChatRecordingService()?.recordToolResult(errorParts, {
+        callId,
+        status: 'error',
+        resultDisplay: undefined,
+        error,
+        errorType: undefined,
       });
 
       return errorResponse(error);
@@ -706,214 +818,84 @@ class Session {
             initialQueryText += ' ';
           }
         }
+        // Append the resolved path spec for display purposes
         if (resolvedSpec) {
           initialQueryText += `@${resolvedSpec}`;
-        } else {
-          // If not resolved for reading (e.g. lone @ or invalid path that was skipped),
-          // add the original @-string back, ensuring spacing if it's not the first element.
-          if (
-            i > 0 &&
-            initialQueryText.length > 0 &&
-            !initialQueryText.endsWith(' ') &&
-            !chunk.fileData?.fileUri.startsWith(' ')
-          ) {
-            initialQueryText += ' ';
-          }
-          if (chunk.fileData?.fileUri) {
-            initialQueryText += `@${chunk.fileData.fileUri}`;
-          }
         }
       }
     }
-    initialQueryText = initialQueryText.trim();
-    // Inform user about ignored paths
+
+    // Handle ignored paths message
+    let ignoredPathsMessage = '';
     if (ignoredPaths.length > 0) {
-      const ignoreType = respectGitIgnore ? 'git-ignored' : 'custom-ignored';
-      this.debug(
-        `Ignored ${ignoredPaths.length} ${ignoreType} files: ${ignoredPaths.join(', ')}`,
-      );
+      const pathList = ignoredPaths.map((p) => `- ${p}`).join('\n');
+      ignoredPathsMessage = `Note: The following paths were skipped because they are ignored:\n${pathList}\n\n`;
     }
 
-    const processedQueryParts: Part[] = [{ text: initialQueryText }];
-
-    if (pathSpecsToRead.length === 0 && embeddedContext.length === 0) {
-      // Fallback for lone "@" or completely invalid @-commands resulting in empty initialQueryText
-      console.warn('No valid file paths found in @ commands to read.');
-      return [{ text: initialQueryText }];
-    }
+    const processedQueryParts: Part[] = [];
 
+    // Read files using read_many_files tool
     if (pathSpecsToRead.length > 0) {
-      const toolArgs = {
-        paths: pathSpecsToRead,
-        respectGitIgnore, // Use configuration setting
-      };
+      const readResult = await readManyFilesTool.buildAndExecute(
+        {
+          paths_with_line_ranges: pathSpecsToRead,
+        },
+        abortSignal,
+      );
 
-      const callId = `${readManyFilesTool.name}-${Date.now()}`;
+      const contentForLlm =
+        typeof readResult.llmContent === 'string'
+          ? readResult.llmContent
+          : JSON.stringify(readResult.llmContent);
 
-      try {
-        const invocation = readManyFilesTool.build(toolArgs);
-
-        await this.sendUpdate({
-          sessionUpdate: 'tool_call',
-          toolCallId: callId,
-          status: 'in_progress',
-          title: invocation.getDescription(),
-          content: [],
-          locations: invocation.toolLocations(),
-          kind: readManyFilesTool.kind,
-        });
-
-        const result = await invocation.execute(abortSignal);
-        const content = toToolCallContent(result) || {
-          type: 'content',
-          content: {
-            type: 'text',
-            text: `Successfully read: ${contentLabelsForDisplay.join(', ')}`,
-          },
-        };
-        await this.sendUpdate({
-          sessionUpdate: 'tool_call_update',
-          toolCallId: callId,
-          status: 'completed',
-          content: content ? [content] : [],
-        });
-        if (Array.isArray(result.llmContent)) {
-          const fileContentRegex = /^--- (.*?) ---\n\n([\s\S]*?)\n\n$/;
-          processedQueryParts.push({
-            text: '\n--- Content from referenced files ---',
-          });
-          for (const part of result.llmContent) {
-            if (typeof part === 'string') {
-              const match = fileContentRegex.exec(part);
-              if (match) {
-                const filePathSpecInContent = match[1]; // This is a resolved pathSpec
-                const fileActualContent = match[2].trim();
-                processedQueryParts.push({
-                  text: `\nContent from @${filePathSpecInContent}:\n`,
-                });
-                processedQueryParts.push({ text: fileActualContent });
-              } else {
-                processedQueryParts.push({ text: part });
-              }
-            } else {
-              // part is a Part object.
-              processedQueryParts.push(part);
-            }
-          }
-        } else {
-          console.warn(
-            'read_many_files tool returned no content or empty content.',
-          );
-        }
-      } catch (error: unknown) {
-        await this.sendUpdate({
-          sessionUpdate: 'tool_call_update',
-          toolCallId: callId,
-          status: 'failed',
-          content: [
-            {
-              type: 'content',
-              content: {
-                type: 'text',
-                text: `Error reading files (${contentLabelsForDisplay.join(', ')}): ${getErrorMessage(error)}`,
-              },
-            },
-          ],
-        });
-
-        throw error;
-      }
+      // Combine content label, ignored paths message, file content, and user query
+      const combinedText = `${ignoredPathsMessage}${contentForLlm}`.trim();
+      processedQueryParts.push({ text: combinedText });
+      processedQueryParts.push({ text: initialQueryText });
+    } else if (embeddedContext.length > 0) {
+      // No @path files to read, but we have embedded context
+      processedQueryParts.push({
+        text: `${ignoredPathsMessage}${initialQueryText}`.trim(),
+      });
+    } else {
+      // No @path files found or resolved
+      processedQueryParts.push({
+        text: `${ignoredPathsMessage}${initialQueryText}`.trim(),
+      });
     }
 
-    if (embeddedContext.length > 0) {
-      processedQueryParts.push({
-        text: '\n--- Content from referenced context ---',
-      });
-
-      for (const contextPart of embeddedContext) {
+    // Process embedded context from resource blocks
+    for (const contextPart of embeddedContext) {
+      // Type guard for text resources
+      if ('text' in contextPart && contextPart.text) {
         processedQueryParts.push({
-          text: `\nContent from @${contextPart.uri}:\n`,
+          text: `File: ${contextPart.uri}\n${contextPart.text}`,
+        });
+      }
+      // Type guard for blob resources
+      if ('blob' in contextPart && contextPart.blob) {
+        processedQueryParts.push({
+          inlineData: {
+            mimeType: contextPart.mimeType ?? 'application/octet-stream',
+            data: contextPart.blob,
+          },
         });
-        if ('text' in contextPart) {
-          processedQueryParts.push({
-            text: contextPart.text,
-          });
-        } else {
-          processedQueryParts.push({
-            inlineData: {
-              mimeType: contextPart.mimeType ?? 'application/octet-stream',
-              data: contextPart.blob,
-            },
-          });
-        }
       }
     }
 
     return processedQueryParts;
   }
 
-  debug(msg: string) {
+  debug(msg: string): void {
     if (this.config.getDebugMode()) {
       console.warn(msg);
     }
   }
 }
 
-function toToolCallContent(toolResult: ToolResult): acp.ToolCallContent | null {
-  if (toolResult.error?.message) {
-    throw new Error(toolResult.error.message);
-  }
-
-  if (toolResult.returnDisplay) {
-    if (typeof toolResult.returnDisplay === 'string') {
-      return {
-        type: 'content',
-        content: { type: 'text', text: toolResult.returnDisplay },
-      };
-    } else if (
-      'type' in toolResult.returnDisplay &&
-      toolResult.returnDisplay.type === 'todo_list'
-    ) {
-      // Handle TodoResultDisplay - convert to text representation
-      const todoText = toolResult.returnDisplay.todos
-        .map((todo) => {
-          const statusIcon = {
-            pending: '○',
-            in_progress: '◐',
-            completed: '●',
-          }[todo.status];
-          return `${statusIcon} ${todo.content}`;
-        })
-        .join('\n');
-
-      return {
-        type: 'content',
-        content: { type: 'text', text: todoText },
-      };
-    } else if (
-      'type' in toolResult.returnDisplay &&
-      toolResult.returnDisplay.type === 'plan_summary'
-    ) {
-      const planDisplay = toolResult.returnDisplay;
-      const planText = `${planDisplay.message}\n\n${planDisplay.plan}`;
-      return {
-        type: 'content',
-        content: { type: 'text', text: planText },
-      };
-    } else {
-      if ('fileName' in toolResult.returnDisplay) {
-        return {
-          type: 'diff',
-          path: toolResult.returnDisplay.fileName,
-          oldText: toolResult.returnDisplay.originalContent,
-          newText: toolResult.returnDisplay.newContent,
-        };
-      }
-      return null;
-    }
-  }
-  return null;
-}
+// ============================================================================
+// Helper functions
+// ============================================================================
 
 const basicPermissionOptions = [
   {
@@ -977,10 +959,19 @@ function toPermissionOptions(
       return [
         {
           optionId: ToolConfirmationOutcome.ProceedAlways,
-          name: `Always Allow Plans`,
+          name: `Yes, and auto-accept edits`,
           kind: 'allow_always',
         },
-        ...basicPermissionOptions,
+        {
+          optionId: ToolConfirmationOutcome.ProceedOnce,
+          name: `Yes, and manually approve edits`,
+          kind: 'allow_once',
+        },
+        {
+          optionId: ToolConfirmationOutcome.Cancel,
+          name: `No, keep planning (esc)`,
+          kind: 'reject_once',
+        },
       ];
     default: {
       const unreachable: never = confirmation;

packages/cli/src/acp-integration/session/SubAgentTracker.test.ts

@@ -0,0 +1,525 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { SubAgentTracker } from './SubAgentTracker.js';
+import type { SessionContext } from './types.js';
+import type {
+  Config,
+  ToolRegistry,
+  SubAgentEventEmitter,
+  SubAgentToolCallEvent,
+  SubAgentToolResultEvent,
+  SubAgentApprovalRequestEvent,
+  ToolEditConfirmationDetails,
+  ToolInfoConfirmationDetails,
+} from '@qwen-code/qwen-code-core';
+import {
+  SubAgentEventType,
+  ToolConfirmationOutcome,
+  TodoWriteTool,
+} from '@qwen-code/qwen-code-core';
+import type * as acp from '../acp.js';
+import { EventEmitter } from 'node:events';
+
+// Helper to create a mock SubAgentToolCallEvent with required fields
+function createToolCallEvent(
+  overrides: Partial<SubAgentToolCallEvent> & { name: string; callId: string },
+): SubAgentToolCallEvent {
+  return {
+    subagentId: 'test-subagent',
+    round: 1,
+    timestamp: Date.now(),
+    description: `Calling ${overrides.name}`,
+    args: {},
+    ...overrides,
+  };
+}
+
+// Helper to create a mock SubAgentToolResultEvent with required fields
+function createToolResultEvent(
+  overrides: Partial<SubAgentToolResultEvent> & {
+    name: string;
+    callId: string;
+    success: boolean;
+  },
+): SubAgentToolResultEvent {
+  return {
+    subagentId: 'test-subagent',
+    round: 1,
+    timestamp: Date.now(),
+    ...overrides,
+  };
+}
+
+// Helper to create a mock SubAgentApprovalRequestEvent with required fields
+function createApprovalEvent(
+  overrides: Partial<SubAgentApprovalRequestEvent> & {
+    name: string;
+    callId: string;
+    confirmationDetails: SubAgentApprovalRequestEvent['confirmationDetails'];
+    respond: SubAgentApprovalRequestEvent['respond'];
+  },
+): SubAgentApprovalRequestEvent {
+  return {
+    subagentId: 'test-subagent',
+    round: 1,
+    timestamp: Date.now(),
+    description: `Awaiting approval for ${overrides.name}`,
+    ...overrides,
+  };
+}
+
+// Helper to create edit confirmation details
+function createEditConfirmation(
+  overrides: Partial<Omit<ToolEditConfirmationDetails, 'onConfirm' | 'type'>>,
+): Omit<ToolEditConfirmationDetails, 'onConfirm'> {
+  return {
+    type: 'edit',
+    title: 'Edit file',
+    fileName: '/test.ts',
+    filePath: '/test.ts',
+    fileDiff: '',
+    originalContent: '',
+    newContent: '',
+    ...overrides,
+  };
+}
+
+// Helper to create info confirmation details
+function createInfoConfirmation(
+  overrides?: Partial<Omit<ToolInfoConfirmationDetails, 'onConfirm' | 'type'>>,
+): Omit<ToolInfoConfirmationDetails, 'onConfirm'> {
+  return {
+    type: 'info',
+    title: 'Tool requires approval',
+    prompt: 'Allow this action?',
+    ...overrides,
+  };
+}
+
+describe('SubAgentTracker', () => {
+  let mockContext: SessionContext;
+  let mockClient: acp.Client;
+  let sendUpdateSpy: ReturnType<typeof vi.fn>;
+  let requestPermissionSpy: ReturnType<typeof vi.fn>;
+  let tracker: SubAgentTracker;
+  let eventEmitter: SubAgentEventEmitter;
+  let abortController: AbortController;
+
+  beforeEach(() => {
+    sendUpdateSpy = vi.fn().mockResolvedValue(undefined);
+    requestPermissionSpy = vi.fn().mockResolvedValue({
+      outcome: { optionId: ToolConfirmationOutcome.ProceedOnce },
+    });
+
+    const mockToolRegistry = {
+      getTool: vi.fn().mockReturnValue(null),
+    } as unknown as ToolRegistry;
+
+    mockContext = {
+      sessionId: 'test-session-id',
+      config: {
+        getToolRegistry: () => mockToolRegistry,
+      } as unknown as Config,
+      sendUpdate: sendUpdateSpy,
+    };
+
+    mockClient = {
+      requestPermission: requestPermissionSpy,
+    } as unknown as acp.Client;
+
+    tracker = new SubAgentTracker(mockContext, mockClient);
+    eventEmitter = new EventEmitter() as unknown as SubAgentEventEmitter;
+    abortController = new AbortController();
+  });
+
+  describe('setup', () => {
+    it('should return cleanup function', () => {
+      const cleanups = tracker.setup(eventEmitter, abortController.signal);
+
+      expect(cleanups).toHaveLength(1);
+      expect(typeof cleanups[0]).toBe('function');
+    });
+
+    it('should register event listeners', () => {
+      const onSpy = vi.spyOn(eventEmitter, 'on');
+
+      tracker.setup(eventEmitter, abortController.signal);
+
+      expect(onSpy).toHaveBeenCalledWith(
+        SubAgentEventType.TOOL_CALL,
+        expect.any(Function),
+      );
+      expect(onSpy).toHaveBeenCalledWith(
+        SubAgentEventType.TOOL_RESULT,
+        expect.any(Function),
+      );
+      expect(onSpy).toHaveBeenCalledWith(
+        SubAgentEventType.TOOL_WAITING_APPROVAL,
+        expect.any(Function),
+      );
+    });
+
+    it('should remove event listeners on cleanup', () => {
+      const offSpy = vi.spyOn(eventEmitter, 'off');
+      const cleanups = tracker.setup(eventEmitter, abortController.signal);
+
+      cleanups[0]();
+
+      expect(offSpy).toHaveBeenCalledWith(
+        SubAgentEventType.TOOL_CALL,
+        expect.any(Function),
+      );
+      expect(offSpy).toHaveBeenCalledWith(
+        SubAgentEventType.TOOL_RESULT,
+        expect.any(Function),
+      );
+      expect(offSpy).toHaveBeenCalledWith(
+        SubAgentEventType.TOOL_WAITING_APPROVAL,
+        expect.any(Function),
+      );
+    });
+  });
+
+  describe('tool call handling', () => {
+    it('should emit tool_call on TOOL_CALL event', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      const event = createToolCallEvent({
+        name: 'read_file',
+        callId: 'call-123',
+        args: { path: '/test.ts' },
+        description: 'Reading file',
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_CALL, event);
+
+      // Allow async operations to complete
+      await vi.waitFor(() => {
+        expect(sendUpdateSpy).toHaveBeenCalled();
+      });
+
+      // ToolCallEmitter resolves metadata from registry - uses toolName when tool not found
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionUpdate: 'tool_call',
+          toolCallId: 'call-123',
+          status: 'in_progress',
+          title: 'read_file',
+          content: [],
+          locations: [],
+          kind: 'other',
+          rawInput: { path: '/test.ts' },
+        }),
+      );
+    });
+
+    it('should skip tool_call for TodoWriteTool', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      const event = createToolCallEvent({
+        name: TodoWriteTool.Name,
+        callId: 'call-todo',
+        args: { todos: [] },
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_CALL, event);
+
+      // Give time for any async operation
+      await new Promise((resolve) => setTimeout(resolve, 10));
+
+      expect(sendUpdateSpy).not.toHaveBeenCalled();
+    });
+
+    it('should not emit when aborted', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+      abortController.abort();
+
+      const event = createToolCallEvent({
+        name: 'read_file',
+        callId: 'call-123',
+        args: {},
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_CALL, event);
+
+      await new Promise((resolve) => setTimeout(resolve, 10));
+
+      expect(sendUpdateSpy).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('tool result handling', () => {
+    it('should emit tool_call_update on TOOL_RESULT event', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      // First emit tool call to store state
+      eventEmitter.emit(
+        SubAgentEventType.TOOL_CALL,
+        createToolCallEvent({
+          name: 'read_file',
+          callId: 'call-123',
+          args: { path: '/test.ts' },
+        }),
+      );
+
+      // Then emit result
+      const resultEvent = createToolResultEvent({
+        name: 'read_file',
+        callId: 'call-123',
+        success: true,
+        resultDisplay: 'File contents',
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_RESULT, resultEvent);
+
+      await vi.waitFor(() => {
+        expect(sendUpdateSpy).toHaveBeenCalledWith(
+          expect.objectContaining({
+            sessionUpdate: 'tool_call_update',
+            toolCallId: 'call-123',
+            status: 'completed',
+          }),
+        );
+      });
+    });
+
+    it('should emit failed status on unsuccessful result', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      const resultEvent = createToolResultEvent({
+        name: 'read_file',
+        callId: 'call-fail',
+        success: false,
+        resultDisplay: undefined,
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_RESULT, resultEvent);
+
+      await vi.waitFor(() => {
+        expect(sendUpdateSpy).toHaveBeenCalledWith(
+          expect.objectContaining({
+            sessionUpdate: 'tool_call_update',
+            status: 'failed',
+          }),
+        );
+      });
+    });
+
+    it('should emit plan update for TodoWriteTool results', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      // Store args via tool call
+      eventEmitter.emit(
+        SubAgentEventType.TOOL_CALL,
+        createToolCallEvent({
+          name: TodoWriteTool.Name,
+          callId: 'call-todo',
+          args: {
+            todos: [{ id: '1', content: 'Task 1', status: 'pending' }],
+          },
+        }),
+      );
+
+      // Emit result with todo_list display
+      const resultEvent = createToolResultEvent({
+        name: TodoWriteTool.Name,
+        callId: 'call-todo',
+        success: true,
+        resultDisplay: JSON.stringify({
+          type: 'todo_list',
+          todos: [{ id: '1', content: 'Task 1', status: 'completed' }],
+        }),
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_RESULT, resultEvent);
+
+      await vi.waitFor(() => {
+        expect(sendUpdateSpy).toHaveBeenCalledWith({
+          sessionUpdate: 'plan',
+          entries: [
+            { content: 'Task 1', priority: 'medium', status: 'completed' },
+          ],
+        });
+      });
+    });
+
+    it('should clean up state after result', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      eventEmitter.emit(
+        SubAgentEventType.TOOL_CALL,
+        createToolCallEvent({
+          name: 'test_tool',
+          callId: 'call-cleanup',
+          args: { test: true },
+        }),
+      );
+
+      eventEmitter.emit(
+        SubAgentEventType.TOOL_RESULT,
+        createToolResultEvent({
+          name: 'test_tool',
+          callId: 'call-cleanup',
+          success: true,
+        }),
+      );
+
+      // Emit another result for same callId - should not have stored args
+      sendUpdateSpy.mockClear();
+      eventEmitter.emit(
+        SubAgentEventType.TOOL_RESULT,
+        createToolResultEvent({
+          name: 'test_tool',
+          callId: 'call-cleanup',
+          success: true,
+        }),
+      );
+
+      await vi.waitFor(() => {
+        expect(sendUpdateSpy).toHaveBeenCalled();
+      });
+
+      // Second call should not have args from first call
+      // (state was cleaned up)
+    });
+  });
+
+  describe('approval handling', () => {
+    it('should request permission from client', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      const respondSpy = vi.fn().mockResolvedValue(undefined);
+      const event = createApprovalEvent({
+        name: 'edit_file',
+        callId: 'call-edit',
+        description: 'Editing file',
+        confirmationDetails: createEditConfirmation({
+          fileName: '/test.ts',
+          originalContent: 'old',
+          newContent: 'new',
+        }),
+        respond: respondSpy,
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_WAITING_APPROVAL, event);
+
+      await vi.waitFor(() => {
+        expect(requestPermissionSpy).toHaveBeenCalled();
+      });
+
+      expect(requestPermissionSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionId: 'test-session-id',
+          toolCall: expect.objectContaining({
+            toolCallId: 'call-edit',
+            status: 'pending',
+            content: [
+              {
+                type: 'diff',
+                path: '/test.ts',
+                oldText: 'old',
+                newText: 'new',
+              },
+            ],
+          }),
+        }),
+      );
+    });
+
+    it('should respond to subagent with permission outcome', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      const respondSpy = vi.fn().mockResolvedValue(undefined);
+      const event = createApprovalEvent({
+        name: 'test_tool',
+        callId: 'call-123',
+        confirmationDetails: createInfoConfirmation(),
+        respond: respondSpy,
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_WAITING_APPROVAL, event);
+
+      await vi.waitFor(() => {
+        expect(respondSpy).toHaveBeenCalledWith(
+          ToolConfirmationOutcome.ProceedOnce,
+        );
+      });
+    });
+
+    it('should cancel on permission request failure', async () => {
+      requestPermissionSpy.mockRejectedValue(new Error('Network error'));
+      tracker.setup(eventEmitter, abortController.signal);
+
+      const respondSpy = vi.fn().mockResolvedValue(undefined);
+      const event = createApprovalEvent({
+        name: 'test_tool',
+        callId: 'call-123',
+        confirmationDetails: createInfoConfirmation(),
+        respond: respondSpy,
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_WAITING_APPROVAL, event);
+
+      await vi.waitFor(() => {
+        expect(respondSpy).toHaveBeenCalledWith(ToolConfirmationOutcome.Cancel);
+      });
+    });
+
+    it('should handle cancelled outcome from client', async () => {
+      requestPermissionSpy.mockResolvedValue({
+        outcome: { outcome: 'cancelled' },
+      });
+      tracker.setup(eventEmitter, abortController.signal);
+
+      const respondSpy = vi.fn().mockResolvedValue(undefined);
+      const event = createApprovalEvent({
+        name: 'test_tool',
+        callId: 'call-123',
+        confirmationDetails: createInfoConfirmation(),
+        respond: respondSpy,
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_WAITING_APPROVAL, event);
+
+      await vi.waitFor(() => {
+        expect(respondSpy).toHaveBeenCalledWith(ToolConfirmationOutcome.Cancel);
+      });
+    });
+  });
+
+  describe('permission options', () => {
+    it('should include "Allow All Edits" for edit type', async () => {
+      tracker.setup(eventEmitter, abortController.signal);
+
+      const event = createApprovalEvent({
+        name: 'edit_file',
+        callId: 'call-123',
+        confirmationDetails: createEditConfirmation({
+          fileName: '/test.ts',
+          originalContent: '',
+          newContent: 'new',
+        }),
+        respond: vi.fn(),
+      });
+
+      eventEmitter.emit(SubAgentEventType.TOOL_WAITING_APPROVAL, event);
+
+      await vi.waitFor(() => {
+        expect(requestPermissionSpy).toHaveBeenCalled();
+      });
+
+      const call = requestPermissionSpy.mock.calls[0][0];
+      expect(call.options).toContainEqual(
+        expect.objectContaining({
+          optionId: ToolConfirmationOutcome.ProceedAlways,
+          name: 'Allow All Edits',
+        }),
+      );
+    });
+  });
+});

packages/cli/src/acp-integration/session/SubAgentTracker.ts

@@ -0,0 +1,318 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type {
+  SubAgentEventEmitter,
+  SubAgentToolCallEvent,
+  SubAgentToolResultEvent,
+  SubAgentApprovalRequestEvent,
+  ToolCallConfirmationDetails,
+  AnyDeclarativeTool,
+  AnyToolInvocation,
+} from '@qwen-code/qwen-code-core';
+import {
+  SubAgentEventType,
+  ToolConfirmationOutcome,
+} from '@qwen-code/qwen-code-core';
+import { z } from 'zod';
+import type { SessionContext } from './types.js';
+import { ToolCallEmitter } from './emitters/ToolCallEmitter.js';
+import type * as acp from '../acp.js';
+
+/**
+ * Permission option kind type matching ACP schema.
+ */
+type PermissionKind =
+  | 'allow_once'
+  | 'reject_once'
+  | 'allow_always'
+  | 'reject_always';
+
+/**
+ * Configuration for permission options displayed to users.
+ */
+interface PermissionOptionConfig {
+  optionId: ToolConfirmationOutcome;
+  name: string;
+  kind: PermissionKind;
+}
+
+const basicPermissionOptions: readonly PermissionOptionConfig[] = [
+  {
+    optionId: ToolConfirmationOutcome.ProceedOnce,
+    name: 'Allow',
+    kind: 'allow_once',
+  },
+  {
+    optionId: ToolConfirmationOutcome.Cancel,
+    name: 'Reject',
+    kind: 'reject_once',
+  },
+] as const;
+
+/**
+ * Tracks and emits events for sub-agent tool calls within TaskTool execution.
+ *
+ * Uses the unified ToolCallEmitter for consistency with normal flow
+ * and history replay. Also handles permission requests for tools that
+ * require user approval.
+ */
+export class SubAgentTracker {
+  private readonly toolCallEmitter: ToolCallEmitter;
+  private readonly toolStates = new Map<
+    string,
+    {
+      tool?: AnyDeclarativeTool;
+      invocation?: AnyToolInvocation;
+      args?: Record<string, unknown>;
+    }
+  >();
+
+  constructor(
+    private readonly ctx: SessionContext,
+    private readonly client: acp.Client,
+  ) {
+    this.toolCallEmitter = new ToolCallEmitter(ctx);
+  }
+
+  /**
+   * Sets up event listeners for a sub-agent's tool events.
+   *
+   * @param eventEmitter - The SubAgentEventEmitter from TaskTool
+   * @param abortSignal - Signal to abort tracking if parent is cancelled
+   * @returns Array of cleanup functions to remove listeners
+   */
+  setup(
+    eventEmitter: SubAgentEventEmitter,
+    abortSignal: AbortSignal,
+  ): Array<() => void> {
+    const onToolCall = this.createToolCallHandler(abortSignal);
+    const onToolResult = this.createToolResultHandler(abortSignal);
+    const onApproval = this.createApprovalHandler(abortSignal);
+
+    eventEmitter.on(SubAgentEventType.TOOL_CALL, onToolCall);
+    eventEmitter.on(SubAgentEventType.TOOL_RESULT, onToolResult);
+    eventEmitter.on(SubAgentEventType.TOOL_WAITING_APPROVAL, onApproval);
+
+    return [
+      () => {
+        eventEmitter.off(SubAgentEventType.TOOL_CALL, onToolCall);
+        eventEmitter.off(SubAgentEventType.TOOL_RESULT, onToolResult);
+        eventEmitter.off(SubAgentEventType.TOOL_WAITING_APPROVAL, onApproval);
+        // Clean up any remaining states
+        this.toolStates.clear();
+      },
+    ];
+  }
+
+  /**
+   * Creates a handler for tool call start events.
+   */
+  private createToolCallHandler(
+    abortSignal: AbortSignal,
+  ): (...args: unknown[]) => void {
+    return (...args: unknown[]) => {
+      const event = args[0] as SubAgentToolCallEvent;
+      if (abortSignal.aborted) return;
+
+      // Look up tool and build invocation for metadata
+      const toolRegistry = this.ctx.config.getToolRegistry();
+      const tool = toolRegistry.getTool(event.name);
+      let invocation: AnyToolInvocation | undefined;
+
+      if (tool) {
+        try {
+          invocation = tool.build(event.args);
+        } catch (e) {
+          // If building fails, continue with defaults
+          console.warn(`Failed to build subagent tool ${event.name}:`, e);
+        }
+      }
+
+      // Store tool, invocation, and args for result handling
+      this.toolStates.set(event.callId, {
+        tool,
+        invocation,
+        args: event.args,
+      });
+
+      // Use unified emitter - handles TodoWriteTool skipping internally
+      void this.toolCallEmitter.emitStart({
+        toolName: event.name,
+        callId: event.callId,
+        args: event.args,
+      });
+    };
+  }
+
+  /**
+   * Creates a handler for tool result events.
+   */
+  private createToolResultHandler(
+    abortSignal: AbortSignal,
+  ): (...args: unknown[]) => void {
+    return (...args: unknown[]) => {
+      const event = args[0] as SubAgentToolResultEvent;
+      if (abortSignal.aborted) return;
+
+      const state = this.toolStates.get(event.callId);
+
+      // Use unified emitter - handles TodoWriteTool plan updates internally
+      void this.toolCallEmitter.emitResult({
+        toolName: event.name,
+        callId: event.callId,
+        success: event.success,
+        message: event.responseParts ?? [],
+        resultDisplay: event.resultDisplay,
+        args: state?.args,
+      });
+
+      // Clean up state
+      this.toolStates.delete(event.callId);
+    };
+  }
+
+  /**
+   * Creates a handler for tool approval request events.
+   */
+  private createApprovalHandler(
+    abortSignal: AbortSignal,
+  ): (...args: unknown[]) => Promise<void> {
+    return async (...args: unknown[]) => {
+      const event = args[0] as SubAgentApprovalRequestEvent;
+      if (abortSignal.aborted) return;
+
+      const state = this.toolStates.get(event.callId);
+      const content: acp.ToolCallContent[] = [];
+
+      // Handle edit confirmation type - show diff
+      if (event.confirmationDetails.type === 'edit') {
+        const editDetails = event.confirmationDetails as unknown as {
+          type: 'edit';
+          fileName: string;
+          originalContent: string | null;
+          newContent: string;
+        };
+        content.push({
+          type: 'diff',
+          path: editDetails.fileName,
+          oldText: editDetails.originalContent ?? '',
+          newText: editDetails.newContent,
+        });
+      }
+
+      // Build permission request
+      const fullConfirmationDetails = {
+        ...event.confirmationDetails,
+        onConfirm: async () => {
+          // Placeholder - actual response handled via event.respond
+        },
+      } as unknown as ToolCallConfirmationDetails;
+
+      const { title, locations, kind } =
+        this.toolCallEmitter.resolveToolMetadata(event.name, state?.args);
+
+      const params: acp.RequestPermissionRequest = {
+        sessionId: this.ctx.sessionId,
+        options: this.toPermissionOptions(fullConfirmationDetails),
+        toolCall: {
+          toolCallId: event.callId,
+          status: 'pending',
+          title,
+          content,
+          locations,
+          kind,
+          rawInput: state?.args,
+        },
+      };
+
+      try {
+        // Request permission from client
+        const output = await this.client.requestPermission(params);
+        const outcome =
+          output.outcome.outcome === 'cancelled'
+            ? ToolConfirmationOutcome.Cancel
+            : z
+                .nativeEnum(ToolConfirmationOutcome)
+                .parse(output.outcome.optionId);
+
+        // Respond to subagent with the outcome
+        await event.respond(outcome);
+      } catch (error) {
+        // If permission request fails, cancel the tool call
+        console.error(
+          `Permission request failed for subagent tool ${event.name}:`,
+          error,
+        );
+        await event.respond(ToolConfirmationOutcome.Cancel);
+      }
+    };
+  }
+
+  /**
+   * Converts confirmation details to permission options for the client.
+   */
+  private toPermissionOptions(
+    confirmation: ToolCallConfirmationDetails,
+  ): acp.PermissionOption[] {
+    switch (confirmation.type) {
+      case 'edit':
+        return [
+          {
+            optionId: ToolConfirmationOutcome.ProceedAlways,
+            name: 'Allow All Edits',
+            kind: 'allow_always',
+          },
+          ...basicPermissionOptions,
+        ];
+      case 'exec':
+        return [
+          {
+            optionId: ToolConfirmationOutcome.ProceedAlways,
+            name: `Always Allow ${(confirmation as { rootCommand?: string }).rootCommand ?? 'command'}`,
+            kind: 'allow_always',
+          },
+          ...basicPermissionOptions,
+        ];
+      case 'mcp':
+        return [
+          {
+            optionId: ToolConfirmationOutcome.ProceedAlwaysServer,
+            name: `Always Allow ${(confirmation as { serverName?: string }).serverName ?? 'server'}`,
+            kind: 'allow_always',
+          },
+          {
+            optionId: ToolConfirmationOutcome.ProceedAlwaysTool,
+            name: `Always Allow ${(confirmation as { toolName?: string }).toolName ?? 'tool'}`,
+            kind: 'allow_always',
+          },
+          ...basicPermissionOptions,
+        ];
+      case 'info':
+        return [
+          {
+            optionId: ToolConfirmationOutcome.ProceedAlways,
+            name: 'Always Allow',
+            kind: 'allow_always',
+          },
+          ...basicPermissionOptions,
+        ];
+      case 'plan':
+        return [
+          {
+            optionId: ToolConfirmationOutcome.ProceedAlways,
+            name: 'Always Allow Plans',
+            kind: 'allow_always',
+          },
+          ...basicPermissionOptions,
+        ];
+      default: {
+        // Fallback for unknown types
+        return [...basicPermissionOptions];
+      }
+    }
+  }
+}

packages/cli/src/acp-integration/session/emitters/BaseEmitter.ts

@@ -0,0 +1,37 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { SessionContext } from '../types.js';
+import type * as acp from '../../acp.js';
+
+/**
+ * Abstract base class for all session event emitters.
+ * Provides common functionality and access to session context.
+ */
+export abstract class BaseEmitter {
+  constructor(protected readonly ctx: SessionContext) {}
+
+  /**
+   * Sends a session update to the ACP client.
+   */
+  protected async sendUpdate(update: acp.SessionUpdate): Promise<void> {
+    return this.ctx.sendUpdate(update);
+  }
+
+  /**
+   * Gets the session configuration.
+   */
+  protected get config() {
+    return this.ctx.config;
+  }
+
+  /**
+   * Gets the session ID.
+   */
+  protected get sessionId() {
+    return this.ctx.sessionId;
+  }
+}

packages/cli/src/acp-integration/session/emitters/MessageEmitter.test.ts

@@ -0,0 +1,151 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { MessageEmitter } from './MessageEmitter.js';
+import type { SessionContext } from '../types.js';
+import type { Config } from '@qwen-code/qwen-code-core';
+
+describe('MessageEmitter', () => {
+  let mockContext: SessionContext;
+  let sendUpdateSpy: ReturnType<typeof vi.fn>;
+  let emitter: MessageEmitter;
+
+  beforeEach(() => {
+    sendUpdateSpy = vi.fn().mockResolvedValue(undefined);
+    mockContext = {
+      sessionId: 'test-session-id',
+      config: {} as Config,
+      sendUpdate: sendUpdateSpy,
+    };
+    emitter = new MessageEmitter(mockContext);
+  });
+
+  describe('emitUserMessage', () => {
+    it('should send user_message_chunk update with text content', async () => {
+      await emitter.emitUserMessage('Hello, world!');
+
+      expect(sendUpdateSpy).toHaveBeenCalledTimes(1);
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'user_message_chunk',
+        content: { type: 'text', text: 'Hello, world!' },
+      });
+    });
+
+    it('should handle empty text', async () => {
+      await emitter.emitUserMessage('');
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'user_message_chunk',
+        content: { type: 'text', text: '' },
+      });
+    });
+
+    it('should handle multiline text', async () => {
+      const multilineText = 'Line 1\nLine 2\nLine 3';
+      await emitter.emitUserMessage(multilineText);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'user_message_chunk',
+        content: { type: 'text', text: multilineText },
+      });
+    });
+  });
+
+  describe('emitAgentMessage', () => {
+    it('should send agent_message_chunk update with text content', async () => {
+      await emitter.emitAgentMessage('I can help you with that.');
+
+      expect(sendUpdateSpy).toHaveBeenCalledTimes(1);
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'agent_message_chunk',
+        content: { type: 'text', text: 'I can help you with that.' },
+      });
+    });
+  });
+
+  describe('emitAgentThought', () => {
+    it('should send agent_thought_chunk update with text content', async () => {
+      await emitter.emitAgentThought('Let me think about this...');
+
+      expect(sendUpdateSpy).toHaveBeenCalledTimes(1);
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'agent_thought_chunk',
+        content: { type: 'text', text: 'Let me think about this...' },
+      });
+    });
+  });
+
+  describe('emitMessage', () => {
+    it('should emit user message when role is user', async () => {
+      await emitter.emitMessage('User input', 'user');
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'user_message_chunk',
+        content: { type: 'text', text: 'User input' },
+      });
+    });
+
+    it('should emit agent message when role is assistant and isThought is false', async () => {
+      await emitter.emitMessage('Agent response', 'assistant', false);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'agent_message_chunk',
+        content: { type: 'text', text: 'Agent response' },
+      });
+    });
+
+    it('should emit agent message when role is assistant and isThought is not provided', async () => {
+      await emitter.emitMessage('Agent response', 'assistant');
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'agent_message_chunk',
+        content: { type: 'text', text: 'Agent response' },
+      });
+    });
+
+    it('should emit agent thought when role is assistant and isThought is true', async () => {
+      await emitter.emitAgentThought('Thinking...');
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'agent_thought_chunk',
+        content: { type: 'text', text: 'Thinking...' },
+      });
+    });
+
+    it('should ignore isThought when role is user', async () => {
+      // Even if isThought is true, user messages should still be user_message_chunk
+      await emitter.emitMessage('User input', 'user', true);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'user_message_chunk',
+        content: { type: 'text', text: 'User input' },
+      });
+    });
+  });
+
+  describe('multiple emissions', () => {
+    it('should handle multiple sequential emissions', async () => {
+      await emitter.emitUserMessage('First');
+      await emitter.emitAgentMessage('Second');
+      await emitter.emitAgentThought('Third');
+
+      expect(sendUpdateSpy).toHaveBeenCalledTimes(3);
+      expect(sendUpdateSpy).toHaveBeenNthCalledWith(1, {
+        sessionUpdate: 'user_message_chunk',
+        content: { type: 'text', text: 'First' },
+      });
+      expect(sendUpdateSpy).toHaveBeenNthCalledWith(2, {
+        sessionUpdate: 'agent_message_chunk',
+        content: { type: 'text', text: 'Second' },
+      });
+      expect(sendUpdateSpy).toHaveBeenNthCalledWith(3, {
+        sessionUpdate: 'agent_thought_chunk',
+        content: { type: 'text', text: 'Third' },
+      });
+    });
+  });
+});

packages/cli/src/acp-integration/session/emitters/MessageEmitter.ts

@@ -0,0 +1,67 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { BaseEmitter } from './BaseEmitter.js';
+
+/**
+ * Handles emission of text message chunks (user, agent, thought).
+ *
+ * This emitter is responsible for sending message content to the ACP client
+ * in a consistent format, regardless of whether the message comes from
+ * normal flow, history replay, or other sources.
+ */
+export class MessageEmitter extends BaseEmitter {
+  /**
+   * Emits a user message chunk.
+   */
+  async emitUserMessage(text: string): Promise<void> {
+    await this.sendUpdate({
+      sessionUpdate: 'user_message_chunk',
+      content: { type: 'text', text },
+    });
+  }
+
+  /**
+   * Emits an agent message chunk.
+   */
+  async emitAgentMessage(text: string): Promise<void> {
+    await this.sendUpdate({
+      sessionUpdate: 'agent_message_chunk',
+      content: { type: 'text', text },
+    });
+  }
+
+  /**
+   * Emits an agent thought chunk.
+   */
+  async emitAgentThought(text: string): Promise<void> {
+    await this.sendUpdate({
+      sessionUpdate: 'agent_thought_chunk',
+      content: { type: 'text', text },
+    });
+  }
+
+  /**
+   * Emits a message chunk based on role and thought flag.
+   * This is the unified method that handles all message types.
+   *
+   * @param text - The message text content
+   * @param role - Whether this is a user or assistant message
+   * @param isThought - Whether this is an assistant thought (only applies to assistant role)
+   */
+  async emitMessage(
+    text: string,
+    role: 'user' | 'assistant',
+    isThought: boolean = false,
+  ): Promise<void> {
+    if (role === 'user') {
+      return this.emitUserMessage(text);
+    }
+    return isThought
+      ? this.emitAgentThought(text)
+      : this.emitAgentMessage(text);
+  }
+}

packages/cli/src/acp-integration/session/emitters/PlanEmitter.test.ts

@@ -0,0 +1,228 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { PlanEmitter } from './PlanEmitter.js';
+import type { SessionContext, TodoItem } from '../types.js';
+import type { Config } from '@qwen-code/qwen-code-core';
+
+describe('PlanEmitter', () => {
+  let mockContext: SessionContext;
+  let sendUpdateSpy: ReturnType<typeof vi.fn>;
+  let emitter: PlanEmitter;
+
+  beforeEach(() => {
+    sendUpdateSpy = vi.fn().mockResolvedValue(undefined);
+    mockContext = {
+      sessionId: 'test-session-id',
+      config: {} as Config,
+      sendUpdate: sendUpdateSpy,
+    };
+    emitter = new PlanEmitter(mockContext);
+  });
+
+  describe('emitPlan', () => {
+    it('should send plan update with converted todo entries', async () => {
+      const todos: TodoItem[] = [
+        { id: '1', content: 'First task', status: 'pending' },
+        { id: '2', content: 'Second task', status: 'in_progress' },
+        { id: '3', content: 'Third task', status: 'completed' },
+      ];
+
+      await emitter.emitPlan(todos);
+
+      expect(sendUpdateSpy).toHaveBeenCalledTimes(1);
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'plan',
+        entries: [
+          { content: 'First task', priority: 'medium', status: 'pending' },
+          { content: 'Second task', priority: 'medium', status: 'in_progress' },
+          { content: 'Third task', priority: 'medium', status: 'completed' },
+        ],
+      });
+    });
+
+    it('should handle empty todos array', async () => {
+      await emitter.emitPlan([]);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'plan',
+        entries: [],
+      });
+    });
+
+    it('should set default priority to medium for all entries', async () => {
+      const todos: TodoItem[] = [
+        { id: '1', content: 'Task', status: 'pending' },
+      ];
+
+      await emitter.emitPlan(todos);
+
+      const call = sendUpdateSpy.mock.calls[0][0];
+      expect(call.entries[0].priority).toBe('medium');
+    });
+  });
+
+  describe('extractTodos', () => {
+    describe('from resultDisplay object', () => {
+      it('should extract todos from valid todo_list object', () => {
+        const resultDisplay = {
+          type: 'todo_list',
+          todos: [
+            { id: '1', content: 'Task 1', status: 'pending' as const },
+            { id: '2', content: 'Task 2', status: 'completed' as const },
+          ],
+        };
+
+        const result = emitter.extractTodos(resultDisplay);
+
+        expect(result).toEqual([
+          { id: '1', content: 'Task 1', status: 'pending' },
+          { id: '2', content: 'Task 2', status: 'completed' },
+        ]);
+      });
+
+      it('should return null for object without type todo_list', () => {
+        const resultDisplay = {
+          type: 'other',
+          todos: [],
+        };
+
+        const result = emitter.extractTodos(resultDisplay);
+
+        expect(result).toBeNull();
+      });
+
+      it('should return null for object without todos array', () => {
+        const resultDisplay = {
+          type: 'todo_list',
+          items: [], // wrong key
+        };
+
+        const result = emitter.extractTodos(resultDisplay);
+
+        expect(result).toBeNull();
+      });
+    });
+
+    describe('from resultDisplay JSON string', () => {
+      it('should extract todos from valid JSON string', () => {
+        const resultDisplay = JSON.stringify({
+          type: 'todo_list',
+          todos: [{ id: '1', content: 'Task', status: 'pending' }],
+        });
+
+        const result = emitter.extractTodos(resultDisplay);
+
+        expect(result).toEqual([
+          { id: '1', content: 'Task', status: 'pending' },
+        ]);
+      });
+
+      it('should return null for invalid JSON string', () => {
+        const resultDisplay = 'not valid json';
+
+        const result = emitter.extractTodos(resultDisplay);
+
+        expect(result).toBeNull();
+      });
+
+      it('should return null for JSON without todo_list type', () => {
+        const resultDisplay = JSON.stringify({
+          type: 'other',
+          data: {},
+        });
+
+        const result = emitter.extractTodos(resultDisplay);
+
+        expect(result).toBeNull();
+      });
+    });
+
+    describe('from args fallback', () => {
+      it('should extract todos from args when resultDisplay is null', () => {
+        const args = {
+          todos: [{ id: '1', content: 'From args', status: 'pending' }],
+        };
+
+        const result = emitter.extractTodos(null, args);
+
+        expect(result).toEqual([
+          { id: '1', content: 'From args', status: 'pending' },
+        ]);
+      });
+
+      it('should extract todos from args when resultDisplay is undefined', () => {
+        const args = {
+          todos: [{ id: '1', content: 'From args', status: 'pending' }],
+        };
+
+        const result = emitter.extractTodos(undefined, args);
+
+        expect(result).toEqual([
+          { id: '1', content: 'From args', status: 'pending' },
+        ]);
+      });
+
+      it('should prefer resultDisplay over args', () => {
+        const resultDisplay = {
+          type: 'todo_list',
+          todos: [{ id: '1', content: 'From display', status: 'completed' }],
+        };
+        const args = {
+          todos: [{ id: '2', content: 'From args', status: 'pending' }],
+        };
+
+        const result = emitter.extractTodos(resultDisplay, args);
+
+        expect(result).toEqual([
+          { id: '1', content: 'From display', status: 'completed' },
+        ]);
+      });
+
+      it('should return null when args has no todos array', () => {
+        const args = { other: 'value' };
+
+        const result = emitter.extractTodos(null, args);
+
+        expect(result).toBeNull();
+      });
+
+      it('should return null when args.todos is not an array', () => {
+        const args = { todos: 'not an array' };
+
+        const result = emitter.extractTodos(null, args);
+
+        expect(result).toBeNull();
+      });
+    });
+
+    describe('edge cases', () => {
+      it('should return null when both resultDisplay and args are undefined', () => {
+        const result = emitter.extractTodos(undefined, undefined);
+
+        expect(result).toBeNull();
+      });
+
+      it('should return null when resultDisplay is empty object', () => {
+        const result = emitter.extractTodos({});
+
+        expect(result).toBeNull();
+      });
+
+      it('should handle resultDisplay with todos but wrong type', () => {
+        const resultDisplay = {
+          type: 'not_todo_list',
+          todos: [{ id: '1', content: 'Task', status: 'pending' }],
+        };
+
+        const result = emitter.extractTodos(resultDisplay);
+
+        expect(result).toBeNull();
+      });
+    });
+  });
+});

packages/cli/src/acp-integration/session/emitters/PlanEmitter.ts

@@ -0,0 +1,96 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { BaseEmitter } from './BaseEmitter.js';
+import type { TodoItem } from '../types.js';
+import type * as acp from '../../acp.js';
+
+/**
+ * Handles emission of plan/todo updates.
+ *
+ * This emitter is responsible for converting todo items to ACP plan entries
+ * and sending plan updates to the client. It also provides utilities for
+ * extracting todos from various sources (tool result displays, args, etc.).
+ */
+export class PlanEmitter extends BaseEmitter {
+  /**
+   * Emits a plan update with the given todo items.
+   *
+   * @param todos - Array of todo items to send as plan entries
+   */
+  async emitPlan(todos: TodoItem[]): Promise<void> {
+    const entries: acp.PlanEntry[] = todos.map((todo) => ({
+      content: todo.content,
+      priority: 'medium' as const, // Default priority since todos don't have priority
+      status: todo.status,
+    }));
+
+    await this.sendUpdate({
+      sessionUpdate: 'plan',
+      entries,
+    });
+  }
+
+  /**
+   * Extracts todos from tool result display or args.
+   * Tries multiple sources in priority order:
+   * 1. Result display object with type 'todo_list'
+   * 2. Result display as JSON string
+   * 3. Args with 'todos' array
+   *
+   * @param resultDisplay - The tool result display (object, string, or undefined)
+   * @param args - The tool call arguments (fallback source)
+   * @returns Array of todos if found, null otherwise
+   */
+  extractTodos(
+    resultDisplay: unknown,
+    args?: Record<string, unknown>,
+  ): TodoItem[] | null {
+    // Try resultDisplay first (final state from tool execution)
+    const fromDisplay = this.extractFromResultDisplay(resultDisplay);
+    if (fromDisplay) return fromDisplay;
+
+    // Fallback to args (initial state)
+    if (args && Array.isArray(args['todos'])) {
+      return args['todos'] as TodoItem[];
+    }
+
+    return null;
+  }
+
+  /**
+   * Extracts todos from a result display value.
+   * Handles both object and JSON string formats.
+   */
+  private extractFromResultDisplay(resultDisplay: unknown): TodoItem[] | null {
+    if (!resultDisplay) return null;
+
+    // Handle direct object with type 'todo_list'
+    if (typeof resultDisplay === 'object') {
+      const obj = resultDisplay as Record<string, unknown>;
+      if (obj['type'] === 'todo_list' && Array.isArray(obj['todos'])) {
+        return obj['todos'] as TodoItem[];
+      }
+    }
+
+    // Handle JSON string (from subagent events)
+    if (typeof resultDisplay === 'string') {
+      try {
+        const parsed = JSON.parse(resultDisplay) as Record<string, unknown>;
+        if (
+          parsed?.['type'] === 'todo_list' &&
+          Array.isArray(parsed['todos'])
+        ) {
+          return parsed['todos'] as TodoItem[];
+        }
+      } catch {
+        // Not JSON, ignore
+      }
+    }
+
+    return null;
+  }
+}

packages/cli/src/acp-integration/session/emitters/ToolCallEmitter.test.ts

@@ -0,0 +1,662 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { ToolCallEmitter } from './ToolCallEmitter.js';
+import type { SessionContext } from '../types.js';
+import type {
+  Config,
+  ToolRegistry,
+  AnyDeclarativeTool,
+  AnyToolInvocation,
+} from '@qwen-code/qwen-code-core';
+import { Kind, TodoWriteTool } from '@qwen-code/qwen-code-core';
+import type { Part } from '@google/genai';
+
+// Helper to create mock message parts for tests
+const createMockMessage = (text?: string): Part[] =>
+  text
+    ? [{ functionResponse: { name: 'test', response: { output: text } } }]
+    : [];
+
+describe('ToolCallEmitter', () => {
+  let mockContext: SessionContext;
+  let sendUpdateSpy: ReturnType<typeof vi.fn>;
+  let mockToolRegistry: ToolRegistry;
+  let emitter: ToolCallEmitter;
+
+  // Helper to create mock tool
+  const createMockTool = (
+    overrides: Partial<AnyDeclarativeTool> = {},
+  ): AnyDeclarativeTool =>
+    ({
+      name: 'test_tool',
+      kind: Kind.Other,
+      build: vi.fn().mockReturnValue({
+        getDescription: () => 'Test tool description',
+        toolLocations: () => [{ path: '/test/file.ts', line: 10 }],
+      } as unknown as AnyToolInvocation),
+      ...overrides,
+    }) as unknown as AnyDeclarativeTool;
+
+  beforeEach(() => {
+    sendUpdateSpy = vi.fn().mockResolvedValue(undefined);
+    mockToolRegistry = {
+      getTool: vi.fn().mockReturnValue(null),
+    } as unknown as ToolRegistry;
+
+    mockContext = {
+      sessionId: 'test-session-id',
+      config: {
+        getToolRegistry: () => mockToolRegistry,
+      } as unknown as Config,
+      sendUpdate: sendUpdateSpy,
+    };
+
+    emitter = new ToolCallEmitter(mockContext);
+  });
+
+  describe('emitStart', () => {
+    it('should emit tool_call update with basic params when tool not in registry', async () => {
+      const result = await emitter.emitStart({
+        toolName: 'unknown_tool',
+        callId: 'call-123',
+        args: { arg1: 'value1' },
+      });
+
+      expect(result).toBe(true);
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'tool_call',
+        toolCallId: 'call-123',
+        status: 'in_progress',
+        title: 'unknown_tool', // Falls back to tool name
+        content: [],
+        locations: [],
+        kind: 'other',
+        rawInput: { arg1: 'value1' },
+      });
+    });
+
+    it('should emit tool_call with resolved metadata when tool is in registry', async () => {
+      const mockTool = createMockTool({ kind: Kind.Edit });
+      vi.mocked(mockToolRegistry.getTool).mockReturnValue(mockTool);
+
+      const result = await emitter.emitStart({
+        toolName: 'edit_file',
+        callId: 'call-456',
+        args: { path: '/test.ts' },
+      });
+
+      expect(result).toBe(true);
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'tool_call',
+        toolCallId: 'call-456',
+        status: 'in_progress',
+        title: 'edit_file: Test tool description',
+        content: [],
+        locations: [{ path: '/test/file.ts', line: 10 }],
+        kind: 'edit',
+        rawInput: { path: '/test.ts' },
+      });
+    });
+
+    it('should skip emit for TodoWriteTool and return false', async () => {
+      const result = await emitter.emitStart({
+        toolName: TodoWriteTool.Name,
+        callId: 'call-todo',
+        args: { todos: [] },
+      });
+
+      expect(result).toBe(false);
+      expect(sendUpdateSpy).not.toHaveBeenCalled();
+    });
+
+    it('should handle empty args', async () => {
+      await emitter.emitStart({
+        toolName: 'test_tool',
+        callId: 'call-empty',
+      });
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          rawInput: {},
+        }),
+      );
+    });
+
+    it('should fall back gracefully when tool build fails', async () => {
+      const mockTool = createMockTool();
+      vi.mocked(mockTool.build).mockImplementation(() => {
+        throw new Error('Build failed');
+      });
+      vi.mocked(mockToolRegistry.getTool).mockReturnValue(mockTool);
+
+      await emitter.emitStart({
+        toolName: 'failing_tool',
+        callId: 'call-fail',
+        args: { invalid: true },
+      });
+
+      // Should use fallback values
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'tool_call',
+        toolCallId: 'call-fail',
+        status: 'in_progress',
+        title: 'failing_tool', // Fallback to tool name
+        content: [],
+        locations: [], // Fallback to empty
+        kind: 'other', // Fallback to other
+        rawInput: { invalid: true },
+      });
+    });
+  });
+
+  describe('emitResult', () => {
+    it('should emit tool_call_update with completed status on success', async () => {
+      await emitter.emitResult({
+        toolName: 'test_tool',
+        callId: 'call-123',
+        success: true,
+        message: createMockMessage('Tool completed successfully'),
+        resultDisplay: 'Tool completed successfully',
+      });
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionUpdate: 'tool_call_update',
+          toolCallId: 'call-123',
+          status: 'completed',
+          rawOutput: 'Tool completed successfully',
+        }),
+      );
+    });
+
+    it('should emit tool_call_update with failed status on failure', async () => {
+      await emitter.emitResult({
+        toolName: 'test_tool',
+        callId: 'call-123',
+        success: false,
+        message: [],
+        error: new Error('Something went wrong'),
+      });
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'tool_call_update',
+        toolCallId: 'call-123',
+        status: 'failed',
+        content: [
+          {
+            type: 'content',
+            content: { type: 'text', text: 'Something went wrong' },
+          },
+        ],
+      });
+    });
+
+    it('should handle diff display format', async () => {
+      await emitter.emitResult({
+        toolName: 'edit_file',
+        callId: 'call-edit',
+        success: true,
+        message: [],
+        resultDisplay: {
+          fileName: '/test/file.ts',
+          originalContent: 'old content',
+          newContent: 'new content',
+        },
+      });
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionUpdate: 'tool_call_update',
+          toolCallId: 'call-edit',
+          status: 'completed',
+          content: [
+            {
+              type: 'diff',
+              path: '/test/file.ts',
+              oldText: 'old content',
+              newText: 'new content',
+            },
+          ],
+        }),
+      );
+    });
+
+    it('should transform message parts to content', async () => {
+      await emitter.emitResult({
+        toolName: 'test_tool',
+        callId: 'call-123',
+        success: true,
+        message: [{ text: 'Some text output' }],
+        resultDisplay: 'raw output',
+      });
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith(
+        expect.objectContaining({
+          sessionUpdate: 'tool_call_update',
+          toolCallId: 'call-123',
+          status: 'completed',
+          content: [
+            {
+              type: 'content',
+              content: { type: 'text', text: 'Some text output' },
+            },
+          ],
+          rawOutput: 'raw output',
+        }),
+      );
+    });
+
+    it('should handle empty message parts', async () => {
+      await emitter.emitResult({
+        toolName: 'test_tool',
+        callId: 'call-empty',
+        success: true,
+        message: [],
+      });
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'tool_call_update',
+        toolCallId: 'call-empty',
+        status: 'completed',
+        content: [],
+      });
+    });
+
+    describe('TodoWriteTool handling', () => {
+      it('should emit plan update instead of tool_call_update for TodoWriteTool', async () => {
+        await emitter.emitResult({
+          toolName: TodoWriteTool.Name,
+          callId: 'call-todo',
+          success: true,
+          message: [],
+          resultDisplay: {
+            type: 'todo_list',
+            todos: [
+              { id: '1', content: 'Task 1', status: 'pending' },
+              { id: '2', content: 'Task 2', status: 'in_progress' },
+            ],
+          },
+        });
+
+        expect(sendUpdateSpy).toHaveBeenCalledTimes(1);
+        expect(sendUpdateSpy).toHaveBeenCalledWith({
+          sessionUpdate: 'plan',
+          entries: [
+            { content: 'Task 1', priority: 'medium', status: 'pending' },
+            { content: 'Task 2', priority: 'medium', status: 'in_progress' },
+          ],
+        });
+      });
+
+      it('should use args as fallback for TodoWriteTool todos', async () => {
+        await emitter.emitResult({
+          toolName: TodoWriteTool.Name,
+          callId: 'call-todo',
+          success: true,
+          message: [],
+          resultDisplay: null,
+          args: {
+            todos: [{ id: '1', content: 'From args', status: 'completed' }],
+          },
+        });
+
+        expect(sendUpdateSpy).toHaveBeenCalledWith({
+          sessionUpdate: 'plan',
+          entries: [
+            { content: 'From args', priority: 'medium', status: 'completed' },
+          ],
+        });
+      });
+
+      it('should not emit anything for TodoWriteTool with empty todos', async () => {
+        await emitter.emitResult({
+          toolName: TodoWriteTool.Name,
+          callId: 'call-todo',
+          success: true,
+          message: [],
+          resultDisplay: { type: 'todo_list', todos: [] },
+        });
+
+        expect(sendUpdateSpy).not.toHaveBeenCalled();
+      });
+
+      it('should not emit anything for TodoWriteTool with no extractable todos', async () => {
+        await emitter.emitResult({
+          toolName: TodoWriteTool.Name,
+          callId: 'call-todo',
+          success: true,
+          message: [],
+          resultDisplay: 'Some string result',
+        });
+
+        expect(sendUpdateSpy).not.toHaveBeenCalled();
+      });
+    });
+  });
+
+  describe('emitError', () => {
+    it('should emit tool_call_update with failed status and error message', async () => {
+      const error = new Error('Connection timeout');
+
+      await emitter.emitError('call-123', error);
+
+      expect(sendUpdateSpy).toHaveBeenCalledWith({
+        sessionUpdate: 'tool_call_update',
+        toolCallId: 'call-123',
+        status: 'failed',
+        content: [
+          {
+            type: 'content',
+            content: { type: 'text', text: 'Connection timeout' },
+          },
+        ],
+      });
+    });
+  });
+
+  describe('isTodoWriteTool', () => {
+    it('should return true for TodoWriteTool.Name', () => {
+      expect(emitter.isTodoWriteTool(TodoWriteTool.Name)).toBe(true);
+    });
+
+    it('should return false for other tool names', () => {
+      expect(emitter.isTodoWriteTool('read_file')).toBe(false);
+      expect(emitter.isTodoWriteTool('edit_file')).toBe(false);
+      expect(emitter.isTodoWriteTool('')).toBe(false);
+    });
+  });
+
+  describe('mapToolKind', () => {
+    it('should map all Kind values correctly', () => {
+      expect(emitter.mapToolKind(Kind.Read)).toBe('read');
+      expect(emitter.mapToolKind(Kind.Edit)).toBe('edit');
+      expect(emitter.mapToolKind(Kind.Delete)).toBe('delete');
+      expect(emitter.mapToolKind(Kind.Move)).toBe('move');
+      expect(emitter.mapToolKind(Kind.Search)).toBe('search');
+      expect(emitter.mapToolKind(Kind.Execute)).toBe('execute');
+      expect(emitter.mapToolKind(Kind.Think)).toBe('think');
+      expect(emitter.mapToolKind(Kind.Fetch)).toBe('fetch');
+      expect(emitter.mapToolKind(Kind.Other)).toBe('other');
+    });
+
+    it('should map exit_plan_mode tool to switch_mode kind', () => {
+      // exit_plan_mode uses Kind.Think internally, but should map to switch_mode per ACP spec
+      expect(emitter.mapToolKind(Kind.Think, 'exit_plan_mode')).toBe(
+        'switch_mode',
+      );
+    });
+
+    it('should not affect other tools with Kind.Think', () => {
+      // Other tools with Kind.Think should still map to think
+      expect(emitter.mapToolKind(Kind.Think, 'todo_write')).toBe('think');
+      expect(emitter.mapToolKind(Kind.Think, 'some_other_tool')).toBe('think');
+    });
+  });
+
+  describe('isExitPlanModeTool', () => {
+    it('should return true for exit_plan_mode tool name', () => {
+      expect(emitter.isExitPlanModeTool('exit_plan_mode')).toBe(true);
+    });
+
+    it('should return false for other tool names', () => {
+      expect(emitter.isExitPlanModeTool('read_file')).toBe(false);
+      expect(emitter.isExitPlanModeTool('edit_file')).toBe(false);
+      expect(emitter.isExitPlanModeTool('todo_write')).toBe(false);
+      expect(emitter.isExitPlanModeTool('')).toBe(false);
+    });
+  });
+
+  describe('resolveToolMetadata', () => {
+    it('should return defaults when tool not found', () => {
+      const metadata = emitter.resolveToolMetadata('unknown_tool', {
+        arg: 'value',
+      });
+
+      expect(metadata).toEqual({
+        title: 'unknown_tool',
+        locations: [],
+        kind: 'other',
+      });
+    });
+
+    it('should return tool metadata when tool found and built successfully', () => {
+      const mockTool = createMockTool({ kind: Kind.Search });
+      vi.mocked(mockToolRegistry.getTool).mockReturnValue(mockTool);
+
+      const metadata = emitter.resolveToolMetadata('search_tool', {
+        query: 'test',
+      });
+
+      expect(metadata).toEqual({
+        title: 'search_tool: Test tool description',
+        locations: [{ path: '/test/file.ts', line: 10 }],
+        kind: 'search',
+      });
+    });
+  });
+
+  describe('integration: consistent behavior across flows', () => {
+    it('should handle the same params consistently regardless of source', async () => {
+      // This test verifies that the emitter produces consistent output
+      // whether called from normal flow, replay, or subagent
+
+      const params = {
+        toolName: 'read_file',
+        callId: 'consistent-call',
+        args: { path: '/test.ts' },
+      };
+
+      // First call (e.g., from normal flow)
+      await emitter.emitStart(params);
+      const firstCall = sendUpdateSpy.mock.calls[0][0];
+
+      // Reset and call again (e.g., from replay)
+      sendUpdateSpy.mockClear();
+      await emitter.emitStart(params);
+      const secondCall = sendUpdateSpy.mock.calls[0][0];
+
+      // Both should produce identical output
+      expect(firstCall).toEqual(secondCall);
+    });
+  });
+
+  describe('fixes verification', () => {
+    describe('Fix 2: functionResponse parts are stringified', () => {
+      it('should stringify functionResponse parts in message', async () => {
+        await emitter.emitResult({
+          toolName: 'test_tool',
+          callId: 'call-func',
+          success: true,
+          message: [
+            {
+              functionResponse: {
+                name: 'test',
+                response: { output: 'test output' },
+              },
+            },
+          ],
+          resultDisplay: { unknownField: 'value', nested: { data: 123 } },
+        });
+
+        expect(sendUpdateSpy).toHaveBeenCalledWith(
+          expect.objectContaining({
+            sessionUpdate: 'tool_call_update',
+            toolCallId: 'call-func',
+            status: 'completed',
+            content: [
+              {
+                type: 'content',
+                content: {
+                  type: 'text',
+                  text: '{"output":"test output"}',
+                },
+              },
+            ],
+            rawOutput: { unknownField: 'value', nested: { data: 123 } },
+          }),
+        );
+      });
+    });
+
+    describe('Fix 3: rawOutput is included in emitResult', () => {
+      it('should include rawOutput when resultDisplay is provided', async () => {
+        await emitter.emitResult({
+          toolName: 'test_tool',
+          callId: 'call-extra',
+          success: true,
+          message: [{ text: 'Result text' }],
+          resultDisplay: 'Result text',
+        });
+
+        expect(sendUpdateSpy).toHaveBeenCalledWith(
+          expect.objectContaining({
+            sessionUpdate: 'tool_call_update',
+            toolCallId: 'call-extra',
+            status: 'completed',
+            rawOutput: 'Result text',
+          }),
+        );
+      });
+
+      it('should not include rawOutput when resultDisplay is undefined', async () => {
+        await emitter.emitResult({
+          toolName: 'test_tool',
+          callId: 'call-null',
+          success: true,
+          message: [],
+        });
+
+        const call = sendUpdateSpy.mock.calls[0][0];
+        expect(call.rawOutput).toBeUndefined();
+      });
+    });
+
+    describe('Fix 5: Line null mapping in resolveToolMetadata', () => {
+      it('should map undefined line to null in locations', () => {
+        const mockTool = createMockTool();
+        // Override toolLocations to return undefined line
+        vi.mocked(mockTool.build).mockReturnValue({
+          getDescription: () => 'Description',
+          toolLocations: () => [
+            { path: '/file1.ts', line: 10 },
+            { path: '/file2.ts', line: undefined },
+            { path: '/file3.ts' }, // no line property
+          ],
+        } as unknown as AnyToolInvocation);
+        vi.mocked(mockToolRegistry.getTool).mockReturnValue(mockTool);
+
+        const metadata = emitter.resolveToolMetadata('test_tool', {
+          arg: 'value',
+        });
+
+        expect(metadata.locations).toEqual([
+          { path: '/file1.ts', line: 10 },
+          { path: '/file2.ts', line: null },
+          { path: '/file3.ts', line: null },
+        ]);
+      });
+    });
+
+    describe('Fix 6: Empty plan emission when args has todos', () => {
+      it('should emit empty plan when args had todos but result has none', async () => {
+        await emitter.emitResult({
+          toolName: TodoWriteTool.Name,
+          callId: 'call-todo-empty',
+          success: true,
+          message: [],
+          resultDisplay: null, // No result display
+          args: {
+            todos: [], // Empty array in args
+          },
+        });
+
+        expect(sendUpdateSpy).toHaveBeenCalledWith({
+          sessionUpdate: 'plan',
+          entries: [],
+        });
+      });
+
+      it('should emit empty plan when result todos is empty but args had todos', async () => {
+        await emitter.emitResult({
+          toolName: TodoWriteTool.Name,
+          callId: 'call-todo-cleared',
+          success: true,
+          message: [],
+          resultDisplay: {
+            type: 'todo_list',
+            todos: [], // Empty result
+          },
+          args: {
+            todos: [{ id: '1', content: 'Was here', status: 'pending' }],
+          },
+        });
+
+        // Should still emit empty plan (result takes precedence but we emit empty)
+        expect(sendUpdateSpy).toHaveBeenCalledWith({
+          sessionUpdate: 'plan',
+          entries: [],
+        });
+      });
+    });
+
+    describe('Message transformation', () => {
+      it('should transform text parts from message', async () => {
+        await emitter.emitResult({
+          toolName: 'test_tool',
+          callId: 'call-text',
+          success: true,
+          message: [{ text: 'Text content from message' }],
+        });
+
+        expect(sendUpdateSpy).toHaveBeenCalledWith({
+          sessionUpdate: 'tool_call_update',
+          toolCallId: 'call-text',
+          status: 'completed',
+          content: [
+            {
+              type: 'content',
+              content: { type: 'text', text: 'Text content from message' },
+            },
+          ],
+        });
+      });
+
+      it('should transform functionResponse parts from message', async () => {
+        await emitter.emitResult({
+          toolName: 'test_tool',
+          callId: 'call-func-resp',
+          success: true,
+          message: [
+            {
+              functionResponse: {
+                name: 'test_tool',
+                response: { output: 'Function output' },
+              },
+            },
+          ],
+          resultDisplay: 'raw result',
+        });
+
+        expect(sendUpdateSpy).toHaveBeenCalledWith(
+          expect.objectContaining({
+            sessionUpdate: 'tool_call_update',
+            toolCallId: 'call-func-resp',
+            status: 'completed',
+            content: [
+              {
+                type: 'content',
+                content: { type: 'text', text: '{"output":"Function output"}' },
+              },
+            ],
+            rawOutput: 'raw result',
+          }),
+        );
+      });
+    });
+  });
+});

packages/cli/src/acp-integration/session/emitters/ToolCallEmitter.ts

@@ -0,0 +1,291 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { BaseEmitter } from './BaseEmitter.js';
+import { PlanEmitter } from './PlanEmitter.js';
+import type {
+  SessionContext,
+  ToolCallStartParams,
+  ToolCallResultParams,
+  ResolvedToolMetadata,
+} from '../types.js';
+import type * as acp from '../../acp.js';
+import type { Part } from '@google/genai';
+import {
+  TodoWriteTool,
+  Kind,
+  ExitPlanModeTool,
+} from '@qwen-code/qwen-code-core';
+
+/**
+ * Unified tool call event emitter.
+ *
+ * Handles tool_call and tool_call_update for ALL flows:
+ * - Normal tool execution in runTool()
+ * - History replay in HistoryReplayer
+ * - SubAgent tool tracking in SubAgentTracker
+ *
+ * This ensures consistent behavior across all tool event sources,
+ * including special handling for tools like TodoWriteTool.
+ */
+export class ToolCallEmitter extends BaseEmitter {
+  private readonly planEmitter: PlanEmitter;
+
+  constructor(ctx: SessionContext) {
+    super(ctx);
+    this.planEmitter = new PlanEmitter(ctx);
+  }
+
+  /**
+   * Emits a tool call start event.
+   *
+   * @param params - Tool call start parameters
+   * @returns true if event was emitted, false if skipped (e.g., TodoWriteTool)
+   */
+  async emitStart(params: ToolCallStartParams): Promise<boolean> {
+    // Skip tool_call for TodoWriteTool - plan updates sent on result
+    if (this.isTodoWriteTool(params.toolName)) {
+      return false;
+    }
+
+    const { title, locations, kind } = this.resolveToolMetadata(
+      params.toolName,
+      params.args,
+    );
+
+    await this.sendUpdate({
+      sessionUpdate: 'tool_call',
+      toolCallId: params.callId,
+      status: 'in_progress',
+      title,
+      content: [],
+      locations,
+      kind,
+      rawInput: params.args ?? {},
+    });
+
+    return true;
+  }
+
+  /**
+   * Emits a tool call result event.
+   * Handles TodoWriteTool specially by routing to plan updates.
+   *
+   * @param params - Tool call result parameters
+   */
+  async emitResult(params: ToolCallResultParams): Promise<void> {
+    // Handle TodoWriteTool specially - send plan update instead
+    if (this.isTodoWriteTool(params.toolName)) {
+      const todos = this.planEmitter.extractTodos(
+        params.resultDisplay,
+        params.args,
+      );
+      // Match original behavior: send plan even if empty when args['todos'] exists
+      // This ensures the UI is updated even when all todos are removed
+      if (todos && todos.length > 0) {
+        await this.planEmitter.emitPlan(todos);
+      } else if (params.args && Array.isArray(params.args['todos'])) {
+        // Send empty plan when args had todos but result has none
+        await this.planEmitter.emitPlan([]);
+      }
+      return; // Skip tool_call_update for TodoWriteTool
+    }
+
+    // Determine content for the update
+    let contentArray: acp.ToolCallContent[] = [];
+
+    // Special case: diff result from edit tools (format from resultDisplay)
+    const diffContent = this.extractDiffContent(params.resultDisplay);
+    if (diffContent) {
+      contentArray = [diffContent];
+    } else if (params.error) {
+      // Error case: show error message
+      contentArray = [
+        {
+          type: 'content',
+          content: { type: 'text', text: params.error.message },
+        },
+      ];
+    } else {
+      // Normal case: transform message parts to ToolCallContent[]
+      contentArray = this.transformPartsToToolCallContent(params.message);
+    }
+
+    // Build the update
+    const update: Parameters<typeof this.sendUpdate>[0] = {
+      sessionUpdate: 'tool_call_update',
+      toolCallId: params.callId,
+      status: params.success ? 'completed' : 'failed',
+      content: contentArray,
+    };
+
+    // Add rawOutput from resultDisplay
+    if (params.resultDisplay !== undefined) {
+      (update as Record<string, unknown>)['rawOutput'] = params.resultDisplay;
+    }
+
+    await this.sendUpdate(update);
+  }
+
+  /**
+   * Emits a tool call error event.
+   * Use this for explicit error handling when not using emitResult.
+   *
+   * @param callId - The tool call ID
+   * @param error - The error that occurred
+   */
+  async emitError(callId: string, error: Error): Promise<void> {
+    await this.sendUpdate({
+      sessionUpdate: 'tool_call_update',
+      toolCallId: callId,
+      status: 'failed',
+      content: [
+        { type: 'content', content: { type: 'text', text: error.message } },
+      ],
+    });
+  }
+
+  // ==================== Public Utilities ====================
+
+  /**
+   * Checks if a tool name is the TodoWriteTool.
+   * Exposed for external use in components that need to check this.
+   */
+  isTodoWriteTool(toolName: string): boolean {
+    return toolName === TodoWriteTool.Name;
+  }
+
+  /**
+   * Checks if a tool name is the ExitPlanModeTool.
+   */
+  isExitPlanModeTool(toolName: string): boolean {
+    return toolName === ExitPlanModeTool.Name;
+  }
+
+  /**
+   * Resolves tool metadata from the registry.
+   * Falls back to defaults if tool not found or build fails.
+   *
+   * @param toolName - Name of the tool
+   * @param args - Tool call arguments (used to build invocation)
+   */
+  resolveToolMetadata(
+    toolName: string,
+    args?: Record<string, unknown>,
+  ): ResolvedToolMetadata {
+    const toolRegistry = this.config.getToolRegistry();
+    const tool = toolRegistry.getTool(toolName);
+
+    let title = tool?.displayName ?? toolName;
+    let locations: acp.ToolCallLocation[] = [];
+    let kind: acp.ToolKind = 'other';
+
+    if (tool && args) {
+      try {
+        const invocation = tool.build(args);
+        title = `${title}: ${invocation.getDescription()}`;
+        // Map locations to ensure line is null instead of undefined (for ACP consistency)
+        locations = invocation.toolLocations().map((loc) => ({
+          path: loc.path,
+          line: loc.line ?? null,
+        }));
+        // Pass tool name to handle special cases like exit_plan_mode -> switch_mode
+        kind = this.mapToolKind(tool.kind, toolName);
+      } catch {
+        // Use defaults on build failure
+      }
+    }
+
+    return { title, locations, kind };
+  }
+
+  /**
+   * Maps core Tool Kind enum to ACP ToolKind string literals.
+   *
+   * @param kind - The core Kind enum value
+   * @param toolName - Optional tool name to handle special cases like exit_plan_mode
+   */
+  mapToolKind(kind: Kind, toolName?: string): acp.ToolKind {
+    // Special case: exit_plan_mode uses 'switch_mode' kind per ACP spec
+    if (toolName && this.isExitPlanModeTool(toolName)) {
+      return 'switch_mode';
+    }
+
+    const kindMap: Record<Kind, acp.ToolKind> = {
+      [Kind.Read]: 'read',
+      [Kind.Edit]: 'edit',
+      [Kind.Delete]: 'delete',
+      [Kind.Move]: 'move',
+      [Kind.Search]: 'search',
+      [Kind.Execute]: 'execute',
+      [Kind.Think]: 'think',
+      [Kind.Fetch]: 'fetch',
+      [Kind.Other]: 'other',
+    };
+    return kindMap[kind] ?? 'other';
+  }
+
+  // ==================== Private Helpers ====================
+
+  /**
+   * Extracts diff content from resultDisplay if it's a diff type (edit tool result).
+   * Returns null if not a diff.
+   */
+  private extractDiffContent(
+    resultDisplay: unknown,
+  ): acp.ToolCallContent | null {
+    if (!resultDisplay || typeof resultDisplay !== 'object') return null;
+
+    const obj = resultDisplay as Record<string, unknown>;
+
+    // Check if this is a diff display (edit tool result)
+    if ('fileName' in obj && 'newContent' in obj) {
+      return {
+        type: 'diff',
+        path: obj['fileName'] as string,
+        oldText: (obj['originalContent'] as string) ?? '',
+        newText: obj['newContent'] as string,
+      };
+    }
+
+    return null;
+  }
+
+  /**
+   * Transforms Part[] to ToolCallContent[].
+   * Extracts text from functionResponse parts and text parts.
+   */
+  private transformPartsToToolCallContent(
+    parts: Part[],
+  ): acp.ToolCallContent[] {
+    const result: acp.ToolCallContent[] = [];
+
+    for (const part of parts) {
+      // Handle text parts
+      if ('text' in part && part.text) {
+        result.push({
+          type: 'content',
+          content: { type: 'text', text: part.text },
+        });
+      }
+
+      // Handle functionResponse parts - stringify the response
+      if ('functionResponse' in part && part.functionResponse) {
+        try {
+          const responseText = JSON.stringify(part.functionResponse.response);
+          result.push({
+            type: 'content',
+            content: { type: 'text', text: responseText },
+          });
+        } catch {
+          // Ignore serialization errors
+        }
+      }
+    }
+
+    return result;
+  }
+}

packages/cli/src/acp-integration/session/emitters/index.ts

@@ -0,0 +1,10 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+export { BaseEmitter } from './BaseEmitter.js';
+export { MessageEmitter } from './MessageEmitter.js';
+export { PlanEmitter } from './PlanEmitter.js';
+export { ToolCallEmitter } from './ToolCallEmitter.js';

packages/cli/src/acp-integration/session/index.ts

@@ -0,0 +1,40 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Session module for ACP/Zed integration.
+ *
+ * This module provides a modular architecture for handling session events:
+ * - **Emitters**: Unified event emission (MessageEmitter, ToolCallEmitter, PlanEmitter)
+ * - **HistoryReplayer**: Replays session history using unified emitters
+ * - **SubAgentTracker**: Tracks sub-agent tool events using unified emitters
+ *
+ * The key benefit is that all event emission goes through the same emitters,
+ * ensuring consistency between normal flow, history replay, and sub-agent events.
+ */
+
+// Types
+export type {
+  SessionContext,
+  SessionUpdateSender,
+  ToolCallStartParams,
+  ToolCallResultParams,
+  TodoItem,
+  ResolvedToolMetadata,
+} from './types.js';
+
+// Emitters
+export { BaseEmitter } from './emitters/BaseEmitter.js';
+export { MessageEmitter } from './emitters/MessageEmitter.js';
+export { PlanEmitter } from './emitters/PlanEmitter.js';
+export { ToolCallEmitter } from './emitters/ToolCallEmitter.js';
+
+// Components
+export { HistoryReplayer } from './HistoryReplayer.js';
+export { SubAgentTracker } from './SubAgentTracker.js';
+
+// Main Session class
+export { Session } from './Session.js';

packages/cli/src/acp-integration/session/types.ts

@@ -0,0 +1,76 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { Config } from '@qwen-code/qwen-code-core';
+import type { Part } from '@google/genai';
+import type * as acp from '../acp.js';
+
+/**
+ * Interface for sending session updates to the ACP client.
+ * Implemented by Session class and used by all emitters.
+ */
+export interface SessionUpdateSender {
+  sendUpdate(update: acp.SessionUpdate): Promise<void>;
+}
+
+/**
+ * Session context shared across all emitters.
+ * Provides access to session state and configuration.
+ */
+export interface SessionContext extends SessionUpdateSender {
+  readonly sessionId: string;
+  readonly config: Config;
+}
+
+/**
+ * Parameters for emitting a tool call start event.
+ */
+export interface ToolCallStartParams {
+  /** Name of the tool being called */
+  toolName: string;
+  /** Unique identifier for this tool call */
+  callId: string;
+  /** Arguments passed to the tool */
+  args?: Record<string, unknown>;
+}
+
+/**
+ * Parameters for emitting a tool call result event.
+ */
+export interface ToolCallResultParams {
+  /** Name of the tool that was called */
+  toolName: string;
+  /** Unique identifier for this tool call */
+  callId: string;
+  /** Whether the tool execution succeeded */
+  success: boolean;
+  /** The response parts from tool execution (maps to content in update event) */
+  message: Part[];
+  /** Display result from tool execution (maps to rawOutput in update event) */
+  resultDisplay?: unknown;
+  /** Error if tool execution failed */
+  error?: Error;
+  /** Original args (fallback for TodoWriteTool todos extraction) */
+  args?: Record<string, unknown>;
+}
+
+/**
+ * Todo item structure for plan updates.
+ */
+export interface TodoItem {
+  id: string;
+  content: string;
+  status: 'pending' | 'in_progress' | 'completed';
+}
+
+/**
+ * Resolved tool metadata from the registry.
+ */
+export interface ResolvedToolMetadata {
+  title: string;
+  locations: acp.ToolCallLocation[];
+  kind: acp.ToolKind;
+}

packages/cli/src/config/auth.test.ts

@@ -18,60 +18,26 @@ vi.mock('./settings.js', () => ({
 describe('validateAuthMethod', () => {
   beforeEach(() => {
     vi.resetModules();
-    vi.stubEnv('GEMINI_API_KEY', undefined);
-    vi.stubEnv('GOOGLE_CLOUD_PROJECT', undefined);
-    vi.stubEnv('GOOGLE_CLOUD_LOCATION', undefined);
-    vi.stubEnv('GOOGLE_API_KEY', undefined);
   });
 
   afterEach(() => {
     vi.unstubAllEnvs();
   });
 
-  it('should return null for LOGIN_WITH_GOOGLE', () => {
-    expect(validateAuthMethod(AuthType.LOGIN_WITH_GOOGLE)).toBeNull();
+  it('should return null for USE_OPENAI', () => {
+    process.env['OPENAI_API_KEY'] = 'fake-key';
+    expect(validateAuthMethod(AuthType.USE_OPENAI)).toBeNull();
   });
 
-  it('should return null for CLOUD_SHELL', () => {
-    expect(validateAuthMethod(AuthType.CLOUD_SHELL)).toBeNull();
+  it('should return an error message for USE_OPENAI if OPENAI_API_KEY is not set', () => {
+    delete process.env['OPENAI_API_KEY'];
+    expect(validateAuthMethod(AuthType.USE_OPENAI)).toBe(
+      'OPENAI_API_KEY environment variable not found. You can enter it interactively or add it to your .env file.',
+    );
   });
 
-  describe('USE_GEMINI', () => {
-    it('should return null if GEMINI_API_KEY is set', () => {
-      vi.stubEnv('GEMINI_API_KEY', 'test-key');
-      expect(validateAuthMethod(AuthType.USE_GEMINI)).toBeNull();
-    });
-
-    it('should return an error message if GEMINI_API_KEY is not set', () => {
-      vi.stubEnv('GEMINI_API_KEY', undefined);
-      expect(validateAuthMethod(AuthType.USE_GEMINI)).toBe(
-        'GEMINI_API_KEY environment variable not found. Add that to your environment and try again (no reload needed if using .env)!',
-      );
-    });
-  });
-
-  describe('USE_VERTEX_AI', () => {
-    it('should return null if GOOGLE_CLOUD_PROJECT and GOOGLE_CLOUD_LOCATION are set', () => {
-      vi.stubEnv('GOOGLE_CLOUD_PROJECT', 'test-project');
-      vi.stubEnv('GOOGLE_CLOUD_LOCATION', 'test-location');
-      expect(validateAuthMethod(AuthType.USE_VERTEX_AI)).toBeNull();
-    });
-
-    it('should return null if GOOGLE_API_KEY is set', () => {
-      vi.stubEnv('GOOGLE_API_KEY', 'test-api-key');
-      expect(validateAuthMethod(AuthType.USE_VERTEX_AI)).toBeNull();
-    });
-
-    it('should return an error message if no required environment variables are set', () => {
-      vi.stubEnv('GOOGLE_CLOUD_PROJECT', undefined);
-      vi.stubEnv('GOOGLE_CLOUD_LOCATION', undefined);
-      expect(validateAuthMethod(AuthType.USE_VERTEX_AI)).toBe(
-        'When using Vertex AI, you must specify either:\n' +
-          '• GOOGLE_CLOUD_PROJECT and GOOGLE_CLOUD_LOCATION environment variables.\n' +
-          '• GOOGLE_API_KEY environment variable (if using express mode).\n' +
-          'Update your environment and try again (no reload needed if using .env)!',
-      );
-    });
+  it('should return null for QWEN_OAUTH', () => {
+    expect(validateAuthMethod(AuthType.QWEN_OAUTH)).toBeNull();
   });
 
   it('should return an error message for an invalid auth method', () => {

packages/cli/src/config/auth.ts

@@ -8,39 +8,13 @@ import { AuthType } from '@qwen-code/qwen-code-core';
 import { loadEnvironment, loadSettings } from './settings.js';
 
 export function validateAuthMethod(authMethod: string): string | null {
-  loadEnvironment(loadSettings().merged);
-  if (
-    authMethod === AuthType.LOGIN_WITH_GOOGLE ||
-    authMethod === AuthType.CLOUD_SHELL
-  ) {
-    return null;
-  }
-
-  if (authMethod === AuthType.USE_GEMINI) {
-    if (!process.env['GEMINI_API_KEY']) {
-      return 'GEMINI_API_KEY environment variable not found. Add that to your environment and try again (no reload needed if using .env)!';
-    }
-    return null;
-  }
-
-  if (authMethod === AuthType.USE_VERTEX_AI) {
-    const hasVertexProjectLocationConfig =
-      !!process.env['GOOGLE_CLOUD_PROJECT'] &&
-      !!process.env['GOOGLE_CLOUD_LOCATION'];
-    const hasGoogleApiKey = !!process.env['GOOGLE_API_KEY'];
-    if (!hasVertexProjectLocationConfig && !hasGoogleApiKey) {
-      return (
-        'When using Vertex AI, you must specify either:\n' +
-        '• GOOGLE_CLOUD_PROJECT and GOOGLE_CLOUD_LOCATION environment variables.\n' +
-        '• GOOGLE_API_KEY environment variable (if using express mode).\n' +
-        'Update your environment and try again (no reload needed if using .env)!'
-      );
-    }
-    return null;
-  }
+  const settings = loadSettings();
+  loadEnvironment(settings.merged);
 
   if (authMethod === AuthType.USE_OPENAI) {
-    if (!process.env['OPENAI_API_KEY']) {
+    const hasApiKey =
+      process.env['OPENAI_API_KEY'] || settings.merged.security?.auth?.apiKey;
+    if (!hasApiKey) {
       return 'OPENAI_API_KEY environment variable not found. You can enter it interactively or add it to your .env file.';
     }
     return null;
@@ -54,15 +28,3 @@ export function validateAuthMethod(authMethod: string): string | null {
 
   return 'Invalid auth method selected.';
 }
-
-export const setOpenAIApiKey = (apiKey: string): void => {
-  process.env['OPENAI_API_KEY'] = apiKey;
-};
-
-export const setOpenAIBaseUrl = (baseUrl: string): void => {
-  process.env['OPENAI_BASE_URL'] = baseUrl;
-};
-
-export const setOpenAIModel = (model: string): void => {
-  process.env['OPENAI_MODEL'] = model;
-};

packages/cli/src/config/config.integration.test.ts

@@ -15,6 +15,7 @@ import type {
 import { Config } from '@qwen-code/qwen-code-core';
 import { http, HttpResponse } from 'msw';
 import { setupServer } from 'msw/node';
+import type { Settings } from './settings.js';
 
 export const server = setupServer();
 
@@ -73,12 +74,10 @@ describe('Configuration Integration Tests', () => {
     it('should load default file filtering settings', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
-        fileFilteringRespectGitIgnore: undefined, // Should default to true
       };
 
       const config = new Config(configParams);
@@ -89,9 +88,8 @@ describe('Configuration Integration Tests', () => {
     it('should load custom file filtering settings from configuration', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
         fileFiltering: {
@@ -107,12 +105,10 @@ describe('Configuration Integration Tests', () => {
     it('should merge user and workspace file filtering settings', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
-        fileFilteringRespectGitIgnore: true,
       };
 
       const config = new Config(configParams);
@@ -125,9 +121,8 @@ describe('Configuration Integration Tests', () => {
     it('should handle partial configuration objects gracefully', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
         fileFiltering: {
@@ -144,12 +139,10 @@ describe('Configuration Integration Tests', () => {
     it('should handle empty configuration objects gracefully', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
-        fileFilteringRespectGitIgnore: undefined,
       };
 
       const config = new Config(configParams);
@@ -161,9 +154,8 @@ describe('Configuration Integration Tests', () => {
     it('should handle missing configuration sections gracefully', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
         // Missing fileFiltering configuration
@@ -180,12 +172,10 @@ describe('Configuration Integration Tests', () => {
     it('should handle a security-focused configuration', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
-        fileFilteringRespectGitIgnore: true,
       };
 
       const config = new Config(configParams);
@@ -196,9 +186,8 @@ describe('Configuration Integration Tests', () => {
     it('should handle a CI/CD environment configuration', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
         fileFiltering: {
@@ -216,9 +205,8 @@ describe('Configuration Integration Tests', () => {
     it('should enable checkpointing when the setting is true', async () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
         checkpointing: true,
@@ -234,9 +222,8 @@ describe('Configuration Integration Tests', () => {
     it('should have an empty array for extension context files by default', () => {
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
       };
@@ -248,9 +235,8 @@ describe('Configuration Integration Tests', () => {
       const contextFiles = ['/path/to/file1.txt', '/path/to/file2.js'];
       const configParams: ConfigParameters = {
         cwd: '/tmp',
-        contentGeneratorConfig: TEST_CONTENT_GENERATOR_CONFIG,
+        generationConfig: TEST_CONTENT_GENERATOR_CONFIG,
         embeddingModel: 'test-embedding-model',
-        sandbox: false,
         targetDir: tempDir,
         debugMode: false,
         extensionContextFilePaths: contextFiles,
@@ -261,11 +247,11 @@ describe('Configuration Integration Tests', () => {
   });
 
   describe('Approval Mode Integration Tests', () => {
-    let parseArguments: typeof import('./config').parseArguments;
+    let parseArguments: typeof import('./config.js').parseArguments;
 
     beforeEach(async () => {
       // Import the argument parsing function for integration testing
-      const { parseArguments: parseArgs } = await import('./config');
+      const { parseArguments: parseArgs } = await import('./config.js');
       parseArguments = parseArgs;
     });
 

packages/cli/src/config/config.ts

@@ -4,16 +4,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import type {
-  FileFilteringOptions,
-  MCPServerConfig,
-  OutputFormat,
-} from '@qwen-code/qwen-code-core';
-import { extensionsCommand } from '../commands/extensions.js';
 import {
   ApprovalMode,
   Config,
-  DEFAULT_QWEN_MODEL,
   DEFAULT_QWEN_EMBEDDING_MODEL,
   DEFAULT_MEMORY_FILE_FILTERING_OPTIONS,
   EditTool,
@@ -25,7 +18,15 @@ import {
   WriteFileTool,
   resolveTelemetrySettings,
   FatalConfigError,
+  Storage,
+  InputFormat,
+  OutputFormat,
+  SessionService,
+  type ResumedSessionData,
+  type FileFilteringOptions,
+  type MCPServerConfig,
 } from '@qwen-code/qwen-code-core';
+import { extensionsCommand } from '../commands/extensions.js';
 import type { Settings } from './settings.js';
 import yargs, { type Argv } from 'yargs';
 import { hideBin } from 'yargs/helpers';
@@ -43,6 +44,7 @@ import { mcpCommand } from '../commands/mcp.js';
 
 import { isWorkspaceTrusted } from './trustedFolders.js';
 import type { ExtensionEnablementManager } from './extensions/extensionEnablement.js';
+import { buildWebSearchConfig } from './webSearch.js';
 
 // Simple console logger for now - replace with actual logger if available
 const logger = {
@@ -114,13 +116,38 @@ export interface CliArgs {
   openaiLogging: boolean | undefined;
   openaiApiKey: string | undefined;
   openaiBaseUrl: string | undefined;
+  openaiLoggingDir: string | undefined;
   proxy: string | undefined;
   includeDirectories: string[] | undefined;
   tavilyApiKey: string | undefined;
+  googleApiKey: string | undefined;
+  googleSearchEngineId: string | undefined;
+  webSearchDefault: string | undefined;
   screenReader: boolean | undefined;
   vlmSwitchMode: string | undefined;
   useSmartEdit: boolean | undefined;
+  inputFormat?: string | undefined;
   outputFormat: string | undefined;
+  includePartialMessages?: boolean;
+  /** Resume the most recent session for the current project */
+  continue: boolean | undefined;
+  /** Resume a specific session by its ID */
+  resume: string | undefined;
+}
+
+function normalizeOutputFormat(
+  format: string | OutputFormat | undefined,
+): OutputFormat | undefined {
+  if (!format) {
+    return undefined;
+  }
+  if (format === OutputFormat.STREAM_JSON) {
+    return OutputFormat.STREAM_JSON;
+  }
+  if (format === 'json' || format === OutputFormat.JSON) {
+    return OutputFormat.JSON;
+  }
+  return OutputFormat.TEXT;
 }
 
 export async function parseArguments(settings: Settings): Promise<CliArgs> {
@@ -194,14 +221,13 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
     })
     .option('proxy', {
       type: 'string',
-      description:
-        'Proxy for gemini client, like schema://user:password@host:port',
+      description: 'Proxy for Qwen Code, like schema://user:password@host:port',
     })
     .deprecateOption(
       'proxy',
       'Use the "proxy" setting in settings.json instead. This flag will be removed in a future version.',
     )
-    .command('$0 [query..]', 'Launch Gemini CLI', (yargsInstance: Argv) =>
+    .command('$0 [query..]', 'Launch Qwen Code CLI', (yargsInstance: Argv) =>
       yargsInstance
         .positional('query', {
           description:
@@ -315,6 +341,11 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
           description:
             'Enable logging of OpenAI API calls for debugging and analysis',
         })
+        .option('openai-logging-dir', {
+          type: 'string',
+          description:
+            'Custom directory path for OpenAI API logs. Overrides settings files.',
+        })
         .option('openai-api-key', {
           type: 'string',
           description: 'OpenAI API key to use for authentication',
@@ -325,7 +356,20 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
         })
         .option('tavily-api-key', {
           type: 'string',
-          description: 'Tavily API key for web search functionality',
+          description: 'Tavily API key for web search',
+        })
+        .option('google-api-key', {
+          type: 'string',
+          description: 'Google Custom Search API key',
+        })
+        .option('google-search-engine-id', {
+          type: 'string',
+          description: 'Google Custom Search Engine ID',
+        })
+        .option('web-search-default', {
+          type: 'string',
+          description:
+            'Default web search provider (dashscope, tavily, google)',
         })
         .option('screen-reader', {
           type: 'boolean',
@@ -338,11 +382,34 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
             'Default behavior when images are detected in input. Values: once (one-time switch), session (switch for entire session), persist (continue with current model). Overrides settings files.',
           default: process.env['VLM_SWITCH_MODE'],
         })
+        .option('input-format', {
+          type: 'string',
+          choices: ['text', 'stream-json'],
+          description: 'The format consumed from standard input.',
+          default: 'text',
+        })
         .option('output-format', {
           alias: 'o',
           type: 'string',
           description: 'The format of the CLI output.',
-          choices: ['text', 'json'],
+          choices: ['text', 'json', 'stream-json'],
+        })
+        .option('include-partial-messages', {
+          type: 'boolean',
+          description:
+            'Include partial assistant messages when using stream-json output.',
+          default: false,
+        })
+        .option('continue', {
+          type: 'boolean',
+          description:
+            'Resume the most recent session for the current project.',
+          default: false,
+        })
+        .option('resume', {
+          type: 'string',
+          description:
+            'Resume a specific session by its ID. Use without an ID to show session picker.',
         })
         .deprecateOption(
           'show-memory-usage',
@@ -387,6 +454,21 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
           if (argv['yolo'] && argv['approvalMode']) {
             return 'Cannot use both --yolo (-y) and --approval-mode together. Use --approval-mode=yolo instead.';
           }
+          if (
+            argv['includePartialMessages'] &&
+            argv['outputFormat'] !== OutputFormat.STREAM_JSON
+          ) {
+            return '--include-partial-messages requires --output-format stream-json';
+          }
+          if (
+            argv['inputFormat'] === 'stream-json' &&
+            argv['outputFormat'] !== OutputFormat.STREAM_JSON
+          ) {
+            return '--input-format stream-json requires --output-format stream-json';
+          }
+          if (argv['continue'] && argv['resume']) {
+            return 'Cannot use both --continue and --resume together. Use --continue to resume the latest session, or --resume <sessionId> to resume a specific session.';
+          }
           return true;
         }),
     )
@@ -501,7 +583,6 @@ export async function loadCliConfig(
   settings: Settings,
   extensions: Extension[],
   extensionEnablementManager: ExtensionEnablementManager,
-  sessionId: string,
   argv: CliArgs,
   cwd: string = process.cwd(),
 ): Promise<Config> {
@@ -539,6 +620,20 @@ export async function loadCliConfig(
     (e) => e.contextFiles,
   );
 
+  // Automatically load output-language.md if it exists
+  const outputLanguageFilePath = path.join(
+    Storage.getGlobalQwenDir(),
+    'output-language.md',
+  );
+  if (fs.existsSync(outputLanguageFilePath)) {
+    extensionContextFilePaths.push(outputLanguageFilePath);
+    if (debugMode) {
+      logger.debug(
+        `Found output-language.md, adding to context files: ${outputLanguageFilePath}`,
+      );
+    }
+  }
+
   const fileService = new FileDiscoveryService(cwd);
 
   const fileFiltering = {
@@ -567,6 +662,22 @@ export async function loadCliConfig(
 
   let mcpServers = mergeMcpServers(settings, activeExtensions);
   const question = argv.promptInteractive || argv.prompt || '';
+  const inputFormat: InputFormat =
+    (argv.inputFormat as InputFormat | undefined) ?? InputFormat.TEXT;
+  const argvOutputFormat = normalizeOutputFormat(
+    argv.outputFormat as string | OutputFormat | undefined,
+  );
+  const settingsOutputFormat = normalizeOutputFormat(settings.output?.format);
+  const outputFormat =
+    argvOutputFormat ?? settingsOutputFormat ?? OutputFormat.TEXT;
+  const outputSettingsFormat: OutputFormat =
+    outputFormat === OutputFormat.STREAM_JSON
+      ? settingsOutputFormat &&
+        settingsOutputFormat !== OutputFormat.STREAM_JSON
+        ? settingsOutputFormat
+        : OutputFormat.TEXT
+      : (outputFormat as OutputFormat);
+  const includePartialMessages = Boolean(argv.includePartialMessages);
 
   // Determine approval mode with backward compatibility
   let approvalMode: ApprovalMode;
@@ -608,11 +719,31 @@ export async function loadCliConfig(
     throw err;
   }
 
-  // Interactive mode: explicit -i flag or (TTY + no args + no -p flag)
+  // Interactive mode determination with priority:
+  // 1. If promptInteractive (-i flag) is provided, it is explicitly interactive
+  // 2. If outputFormat is stream-json or json (no matter input-format) along with query or prompt, it is non-interactive
+  // 3. If no query or prompt is provided, check isTTY: TTY means interactive, non-TTY means non-interactive
   const hasQuery = !!argv.query;
-  const interactive =
-    !!argv.promptInteractive ||
-    (process.stdin.isTTY && !hasQuery && !argv.prompt);
+  const hasPrompt = !!argv.prompt;
+  let interactive: boolean;
+  if (argv.promptInteractive) {
+    // Priority 1: Explicit -i flag means interactive
+    interactive = true;
+  } else if (
+    (outputFormat === OutputFormat.STREAM_JSON ||
+      outputFormat === OutputFormat.JSON) &&
+    (hasQuery || hasPrompt)
+  ) {
+    // Priority 2: JSON/stream-json output with query/prompt means non-interactive
+    interactive = false;
+  } else if (!hasQuery && !hasPrompt) {
+    // Priority 3: No query or prompt means interactive only if TTY (format arguments ignored)
+    interactive = process.stdin.isTTY ?? false;
+  } else {
+    // Default: If we have query/prompt but output format is TEXT, assume non-interactive
+    // (fallback for edge cases where query/prompt is provided with TEXT output)
+    interactive = false;
+  }
   // In non-interactive mode, exclude tools that require a prompt.
   const extraExcludes: string[] = [];
   if (!interactive && !argv.experimentalAcp) {
@@ -669,13 +800,11 @@ export async function loadCliConfig(
     );
   }
 
-  const defaultModel = DEFAULT_QWEN_MODEL;
-  const resolvedModel: string =
+  const resolvedModel =
     argv.model ||
     process.env['OPENAI_MODEL'] ||
     process.env['QWEN_MODEL'] ||
-    settings.model?.name ||
-    defaultModel;
+    settings.model?.name;
 
   const sandboxConfig = await loadSandboxConfig(settings, argv);
   const screenReader =
@@ -685,8 +814,33 @@ export async function loadCliConfig(
 
   const vlmSwitchMode =
     argv.vlmSwitchMode || settings.experimental?.vlmSwitchMode;
+
+  let sessionId: string | undefined;
+  let sessionData: ResumedSessionData | undefined;
+
+  if (argv.continue || argv.resume) {
+    const sessionService = new SessionService(cwd);
+    if (argv.continue) {
+      sessionData = await sessionService.loadLastSession();
+      if (sessionData) {
+        sessionId = sessionData.conversation.sessionId;
+      }
+    }
+
+    if (argv.resume) {
+      sessionId = argv.resume;
+      sessionData = await sessionService.loadSession(argv.resume);
+      if (!sessionData) {
+        const message = `No saved session found with ID ${argv.resume}. Run \`qwen --resume\` without an ID to choose from existing sessions.`;
+        console.log(message);
+        process.exit(1);
+      }
+    }
+  }
+
   return new Config({
     sessionId,
+    sessionData,
     embeddingModel: DEFAULT_QWEN_EMBEDDING_MODEL,
     sandbox: sandboxConfig,
     targetDir: cwd,
@@ -736,21 +890,33 @@ export async function loadCliConfig(
     blockedMcpServers,
     noBrowser: !!process.env['NO_BROWSER'],
     authType: settings.security?.auth?.selectedType,
+    inputFormat,
+    outputFormat,
+    includePartialMessages,
     generationConfig: {
       ...(settings.model?.generationConfig || {}),
       model: resolvedModel,
-      apiKey: argv.openaiApiKey || process.env['OPENAI_API_KEY'],
-      baseUrl: argv.openaiBaseUrl || process.env['OPENAI_BASE_URL'],
+      apiKey:
+        argv.openaiApiKey ||
+        process.env['OPENAI_API_KEY'] ||
+        settings.security?.auth?.apiKey,
+      baseUrl:
+        argv.openaiBaseUrl ||
+        process.env['OPENAI_BASE_URL'] ||
+        settings.security?.auth?.baseUrl,
       enableOpenAILogging:
         (typeof argv.openaiLogging === 'undefined'
           ? settings.model?.enableOpenAILogging
           : argv.openaiLogging) ?? false,
+      openAILoggingDir:
+        argv.openaiLoggingDir || settings.model?.openAILoggingDir,
     },
     cliVersion: await getCliVersion(),
-    tavilyApiKey:
-      argv.tavilyApiKey ||
-      settings.advanced?.tavilyApiKey ||
-      process.env['TAVILY_API_KEY'],
+    webSearch: buildWebSearchConfig(
+      argv,
+      settings,
+      settings.security?.auth?.selectedType,
+    ),
     summarizeToolOutput: settings.model?.summarizeToolOutput,
     ideMode,
     chatCompression: settings.model?.chatCompression,
@@ -758,10 +924,11 @@ export async function loadCliConfig(
     interactive,
     trustedFolder,
     useRipgrep: settings.tools?.useRipgrep,
+    useBuiltinRipgrep: settings.tools?.useBuiltinRipgrep,
     shouldUseNodePtyShell: settings.tools?.shell?.enableInteractiveShell,
     skipNextSpeakerCheck: settings.model?.skipNextSpeakerCheck,
-    enablePromptCompletion: settings.general?.enablePromptCompletion ?? false,
     skipLoopDetection: settings.model?.skipLoopDetection ?? false,
+    skipStartupContext: settings.model?.skipStartupContext ?? false,
     vlmSwitchMode,
     truncateToolOutputThreshold: settings.tools?.truncateToolOutputThreshold,
     truncateToolOutputLines: settings.tools?.truncateToolOutputLines,
@@ -769,7 +936,7 @@ export async function loadCliConfig(
     eventEmitter: appEvents,
     useSmartEdit: argv.useSmartEdit ?? settings.useSmartEdit,
     output: {
-      format: (argv.outputFormat ?? settings.output?.format) as OutputFormat,
+      format: outputSettingsFormat,
     },
   });
 }

packages/cli/src/config/extension.ts

@@ -30,7 +30,6 @@ import { getErrorMessage } from '../utils/errors.js';
 import { recursivelyHydrateStrings } from './extensions/variables.js';
 import { isWorkspaceTrusted } from './trustedFolders.js';
 import { resolveEnvVarsInObject } from '../utils/envVarResolver.js';
-import { randomUUID } from 'node:crypto';
 import {
   cloneFromGit,
   downloadFromGitHubRelease,
@@ -134,7 +133,6 @@ function getTelemetryConfig(cwd: string) {
   const config = new Config({
     telemetry: settings.merged.telemetry,
     interactive: false,
-    sessionId: randomUUID(),
     targetDir: cwd,
     cwd,
     model: '',

packages/cli/src/config/settings.test.ts

@@ -66,6 +66,8 @@ import {
   loadEnvironment,
   migrateDeprecatedSettings,
   SettingScope,
+  SETTINGS_VERSION,
+  SETTINGS_VERSION_KEY,
 } from './settings.js';
 import { FatalConfigError, QWEN_DIR } from '@qwen-code/qwen-code-core';
 
@@ -94,6 +96,7 @@ vi.mock('fs', async (importOriginal) => {
     existsSync: vi.fn(),
     readFileSync: vi.fn(),
     writeFileSync: vi.fn(),
+    renameSync: vi.fn(),
     mkdirSync: vi.fn(),
     realpathSync: (p: string) => p,
   };
@@ -171,11 +174,15 @@ describe('Settings Loading and Merging', () => {
         getSystemSettingsPath(),
         'utf-8',
       );
-      expect(settings.system.settings).toEqual(systemSettingsContent);
+      expect(settings.system.settings).toEqual({
+        ...systemSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
       expect(settings.user.settings).toEqual({});
       expect(settings.workspace.settings).toEqual({});
       expect(settings.merged).toEqual({
         ...systemSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
       });
     });
 
@@ -207,10 +214,14 @@ describe('Settings Loading and Merging', () => {
         expectedUserSettingsPath,
         'utf-8',
       );
-      expect(settings.user.settings).toEqual(userSettingsContent);
+      expect(settings.user.settings).toEqual({
+        ...userSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
       expect(settings.workspace.settings).toEqual({});
       expect(settings.merged).toEqual({
         ...userSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
       });
     });
 
@@ -241,9 +252,13 @@ describe('Settings Loading and Merging', () => {
         'utf-8',
       );
       expect(settings.user.settings).toEqual({});
-      expect(settings.workspace.settings).toEqual(workspaceSettingsContent);
+      expect(settings.workspace.settings).toEqual({
+        ...workspaceSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
       expect(settings.merged).toEqual({
         ...workspaceSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
       });
     });
 
@@ -304,10 +319,20 @@ describe('Settings Loading and Merging', () => {
 
       const settings = loadSettings(MOCK_WORKSPACE_DIR);
 
-      expect(settings.system.settings).toEqual(systemSettingsContent);
-      expect(settings.user.settings).toEqual(userSettingsContent);
-      expect(settings.workspace.settings).toEqual(workspaceSettingsContent);
+      expect(settings.system.settings).toEqual({
+        ...systemSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
+      expect(settings.user.settings).toEqual({
+        ...userSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
+      expect(settings.workspace.settings).toEqual({
+        ...workspaceSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
       expect(settings.merged).toEqual({
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
         ui: {
           theme: 'system-theme',
         },
@@ -361,6 +386,7 @@ describe('Settings Loading and Merging', () => {
       const settings = loadSettings(MOCK_WORKSPACE_DIR);
 
       expect(settings.merged).toEqual({
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
         ui: {
           theme: 'legacy-dark',
         },
@@ -413,6 +439,132 @@ describe('Settings Loading and Merging', () => {
       expect((settings.merged as TestSettings)['allowedTools']).toBeUndefined();
     });
 
+    it('should add version field to migrated settings file', () => {
+      (mockFsExistsSync as Mock).mockImplementation(
+        (p: fs.PathLike) => p === USER_SETTINGS_PATH,
+      );
+      const legacySettingsContent = {
+        theme: 'dark',
+        model: 'qwen-coder',
+      };
+      (fs.readFileSync as Mock).mockImplementation(
+        (p: fs.PathOrFileDescriptor) => {
+          if (p === USER_SETTINGS_PATH)
+            return JSON.stringify(legacySettingsContent);
+          return '{}';
+        },
+      );
+
+      loadSettings(MOCK_WORKSPACE_DIR);
+
+      // Verify that fs.writeFileSync was called with migrated settings including version
+      expect(fs.writeFileSync).toHaveBeenCalled();
+      const writeCall = (fs.writeFileSync as Mock).mock.calls[0];
+      const writtenContent = JSON.parse(writeCall[1] as string);
+      expect(writtenContent[SETTINGS_VERSION_KEY]).toBe(SETTINGS_VERSION);
+    });
+
+    it('should not re-migrate settings that have version field', () => {
+      (mockFsExistsSync as Mock).mockImplementation(
+        (p: fs.PathLike) => p === USER_SETTINGS_PATH,
+      );
+      const migratedSettingsContent = {
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+        ui: {
+          theme: 'dark',
+        },
+        model: {
+          name: 'qwen-coder',
+        },
+      };
+      (fs.readFileSync as Mock).mockImplementation(
+        (p: fs.PathOrFileDescriptor) => {
+          if (p === USER_SETTINGS_PATH)
+            return JSON.stringify(migratedSettingsContent);
+          return '{}';
+        },
+      );
+
+      loadSettings(MOCK_WORKSPACE_DIR);
+
+      // Verify that fs.renameSync and fs.writeFileSync were NOT called
+      // (because no migration was needed)
+      expect(fs.renameSync).not.toHaveBeenCalled();
+      expect(fs.writeFileSync).not.toHaveBeenCalled();
+    });
+
+    it('should add version field to V2 settings without version and write to disk', () => {
+      (mockFsExistsSync as Mock).mockImplementation(
+        (p: fs.PathLike) => p === USER_SETTINGS_PATH,
+      );
+      // V2 format but no version field
+      const v2SettingsWithoutVersion = {
+        ui: {
+          theme: 'dark',
+        },
+        model: {
+          name: 'qwen-coder',
+        },
+      };
+      (fs.readFileSync as Mock).mockImplementation(
+        (p: fs.PathOrFileDescriptor) => {
+          if (p === USER_SETTINGS_PATH)
+            return JSON.stringify(v2SettingsWithoutVersion);
+          return '{}';
+        },
+      );
+
+      loadSettings(MOCK_WORKSPACE_DIR);
+
+      // Verify that fs.writeFileSync was called (to add version)
+      // but NOT fs.renameSync (no backup needed, just adding version)
+      expect(fs.renameSync).not.toHaveBeenCalled();
+      expect(fs.writeFileSync).toHaveBeenCalledTimes(1);
+
+      const writeCall = (fs.writeFileSync as Mock).mock.calls[0];
+      const writtenPath = writeCall[0];
+      const writtenContent = JSON.parse(writeCall[1] as string);
+
+      expect(writtenPath).toBe(USER_SETTINGS_PATH);
+      expect(writtenContent[SETTINGS_VERSION_KEY]).toBe(SETTINGS_VERSION);
+      expect(writtenContent.ui?.theme).toBe('dark');
+      expect(writtenContent.model?.name).toBe('qwen-coder');
+    });
+
+    it('should correctly handle partially migrated settings without version field', () => {
+      (mockFsExistsSync as Mock).mockImplementation(
+        (p: fs.PathLike) => p === USER_SETTINGS_PATH,
+      );
+      // Edge case: model already in V2 format (object), but autoAccept in V1 format
+      const partiallyMigratedContent = {
+        model: {
+          name: 'qwen-coder',
+        },
+        autoAccept: false, // V1 key
+      };
+      (fs.readFileSync as Mock).mockImplementation(
+        (p: fs.PathOrFileDescriptor) => {
+          if (p === USER_SETTINGS_PATH)
+            return JSON.stringify(partiallyMigratedContent);
+          return '{}';
+        },
+      );
+
+      loadSettings(MOCK_WORKSPACE_DIR);
+
+      // Verify that the migrated settings preserve the model object correctly
+      expect(fs.writeFileSync).toHaveBeenCalled();
+      const writeCall = (fs.writeFileSync as Mock).mock.calls[0];
+      const writtenContent = JSON.parse(writeCall[1] as string);
+
+      // Model should remain as an object, not double-nested
+      expect(writtenContent.model).toEqual({ name: 'qwen-coder' });
+      // autoAccept should be migrated to tools.autoAccept
+      expect(writtenContent.tools?.autoAccept).toBe(false);
+      // Version field should be added
+      expect(writtenContent[SETTINGS_VERSION_KEY]).toBe(SETTINGS_VERSION);
+    });
+
     it('should correctly merge and migrate legacy array properties from multiple scopes', () => {
       (mockFsExistsSync as Mock).mockReturnValue(true);
       const legacyUserSettings = {
@@ -515,11 +667,24 @@ describe('Settings Loading and Merging', () => {
 
       const settings = loadSettings(MOCK_WORKSPACE_DIR);
 
-      expect(settings.systemDefaults.settings).toEqual(systemDefaultsContent);
-      expect(settings.system.settings).toEqual(systemSettingsContent);
-      expect(settings.user.settings).toEqual(userSettingsContent);
-      expect(settings.workspace.settings).toEqual(workspaceSettingsContent);
+      expect(settings.systemDefaults.settings).toEqual({
+        ...systemDefaultsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
+      expect(settings.system.settings).toEqual({
+        ...systemSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
+      expect(settings.user.settings).toEqual({
+        ...userSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
+      expect(settings.workspace.settings).toEqual({
+        ...workspaceSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
       expect(settings.merged).toEqual({
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
         context: {
           fileName: 'WORKSPACE_CONTEXT.md',
           includeDirectories: [
@@ -866,8 +1031,14 @@ describe('Settings Loading and Merging', () => {
 
       const settings = loadSettings(MOCK_WORKSPACE_DIR);
 
-      expect(settings.user.settings).toEqual(userSettingsContent);
-      expect(settings.workspace.settings).toEqual(workspaceSettingsContent);
+      expect(settings.user.settings).toEqual({
+        ...userSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
+      expect(settings.workspace.settings).toEqual({
+        ...workspaceSettingsContent,
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+      });
       expect(settings.merged.mcpServers).toEqual({
         'user-server': {
           command: 'user-command',
@@ -1696,9 +1867,13 @@ describe('Settings Loading and Merging', () => {
           'utf-8',
         );
         expect(settings.system.path).toBe(MOCK_ENV_SYSTEM_SETTINGS_PATH);
-        expect(settings.system.settings).toEqual(systemSettingsContent);
+        expect(settings.system.settings).toEqual({
+          ...systemSettingsContent,
+          [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+        });
         expect(settings.merged).toEqual({
           ...systemSettingsContent,
+          [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
         });
       });
     });
@@ -2248,6 +2423,44 @@ describe('Settings Loading and Merging', () => {
         customWittyPhrases: ['test phrase'],
       });
     });
+
+    it('should remove version field when migrating to V1', () => {
+      const v2Settings = {
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+        ui: {
+          theme: 'dark',
+        },
+        model: {
+          name: 'qwen-coder',
+        },
+      };
+      const v1Settings = migrateSettingsToV1(v2Settings);
+
+      // Version field should not be present in V1 settings
+      expect(v1Settings[SETTINGS_VERSION_KEY]).toBeUndefined();
+      // Other fields should be properly migrated
+      expect(v1Settings).toEqual({
+        theme: 'dark',
+        model: 'qwen-coder',
+      });
+    });
+
+    it('should handle version field in unrecognized properties', () => {
+      const v2Settings = {
+        [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+        general: {
+          vimMode: true,
+        },
+        someUnrecognizedKey: 'value',
+      };
+      const v1Settings = migrateSettingsToV1(v2Settings);
+
+      // Version field should be filtered out
+      expect(v1Settings[SETTINGS_VERSION_KEY]).toBeUndefined();
+      // Unrecognized keys should be preserved
+      expect(v1Settings['someUnrecognizedKey']).toBe('value');
+      expect(v1Settings['vimMode']).toBe(true);
+    });
   });
 
   describe('loadEnvironment', () => {
@@ -2368,6 +2581,73 @@ describe('Settings Loading and Merging', () => {
       };
       expect(needsMigration(settings)).toBe(false);
     });
+
+    describe('with version field', () => {
+      it('should return false when version field indicates current or newer version', () => {
+        const settingsWithVersion = {
+          [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+          theme: 'dark', // Even though this is a V1 key, version field takes precedence
+        };
+        expect(needsMigration(settingsWithVersion)).toBe(false);
+      });
+
+      it('should return false when version field indicates a newer version', () => {
+        const settingsWithNewerVersion = {
+          [SETTINGS_VERSION_KEY]: SETTINGS_VERSION + 1,
+          theme: 'dark',
+        };
+        expect(needsMigration(settingsWithNewerVersion)).toBe(false);
+      });
+
+      it('should return true when version field indicates an older version', () => {
+        const settingsWithOldVersion = {
+          [SETTINGS_VERSION_KEY]: SETTINGS_VERSION - 1,
+          theme: 'dark',
+        };
+        expect(needsMigration(settingsWithOldVersion)).toBe(true);
+      });
+
+      it('should use fallback logic when version field is not a number', () => {
+        const settingsWithInvalidVersion = {
+          [SETTINGS_VERSION_KEY]: 'not-a-number',
+          theme: 'dark',
+        };
+        expect(needsMigration(settingsWithInvalidVersion)).toBe(true);
+      });
+
+      it('should use fallback logic when version field is missing', () => {
+        const settingsWithoutVersion = {
+          theme: 'dark',
+        };
+        expect(needsMigration(settingsWithoutVersion)).toBe(true);
+      });
+    });
+
+    describe('edge case: partially migrated settings', () => {
+      it('should return true for partially migrated settings without version field', () => {
+        // This simulates the dangerous edge case: model already in V2 format,
+        // but other fields in V1 format
+        const partiallyMigrated = {
+          model: {
+            name: 'qwen-coder',
+          },
+          autoAccept: false, // V1 key
+        };
+        expect(needsMigration(partiallyMigrated)).toBe(true);
+      });
+
+      it('should return false for partially migrated settings WITH version field', () => {
+        // With version field, we trust that it's been properly migrated
+        const partiallyMigratedWithVersion = {
+          [SETTINGS_VERSION_KEY]: SETTINGS_VERSION,
+          model: {
+            name: 'qwen-coder',
+          },
+          autoAccept: false, // This would look like V1 but version says it's V2
+        };
+        expect(needsMigration(partiallyMigratedWithVersion)).toBe(false);
+      });
+    });
   });
 
   describe('migrateDeprecatedSettings', () => {

packages/cli/src/config/settings.ts

@@ -56,6 +56,10 @@ export const DEFAULT_EXCLUDED_ENV_VARS = ['DEBUG', 'DEBUG_MODE'];
 
 const MIGRATE_V2_OVERWRITE = true;
 
+// Settings version to track migration state
+export const SETTINGS_VERSION = 2;
+export const SETTINGS_VERSION_KEY = '$version';
+
 const MIGRATION_MAP: Record<string, string> = {
   accessibility: 'ui.accessibility',
   allowedTools: 'tools.allowed',
@@ -73,7 +77,6 @@ const MIGRATION_MAP: Record<string, string> = {
   disableAutoUpdate: 'general.disableAutoUpdate',
   disableUpdateNag: 'general.disableUpdateNag',
   dnsResolutionOrder: 'advanced.dnsResolutionOrder',
-  enablePromptCompletion: 'general.enablePromptCompletion',
   enforcedAuthType: 'security.auth.enforcedType',
   excludeTools: 'tools.exclude',
   excludeMCPServers: 'mcp.excluded',
@@ -127,6 +130,7 @@ const MIGRATION_MAP: Record<string, string> = {
   sessionTokenLimit: 'model.sessionTokenLimit',
   contentGenerator: 'model.generationConfig',
   skipLoopDetection: 'model.skipLoopDetection',
+  skipStartupContext: 'model.skipStartupContext',
   enableOpenAILogging: 'model.enableOpenAILogging',
   tavilyApiKey: 'advanced.tavilyApiKey',
   vlmSwitchMode: 'experimental.vlmSwitchMode',
@@ -216,8 +220,16 @@ function setNestedProperty(
 }
 
 export function needsMigration(settings: Record<string, unknown>): boolean {
-  // A file needs migration if it contains any top-level key that is moved to a
-  // nested location in V2.
+  // Check version field first - if present and matches current version, no migration needed
+  if (SETTINGS_VERSION_KEY in settings) {
+    const version = settings[SETTINGS_VERSION_KEY];
+    if (typeof version === 'number' && version >= SETTINGS_VERSION) {
+      return false;
+    }
+  }
+
+  // Fallback to legacy detection: A file needs migration if it contains any
+  // top-level key that is moved to a nested location in V2.
   const hasV1Keys = Object.entries(MIGRATION_MAP).some(([v1Key, v2Path]) => {
     if (v1Key === v2Path || !(v1Key in settings)) {
       return false;
@@ -250,6 +262,21 @@ function migrateSettingsToV2(
 
   for (const [oldKey, newPath] of Object.entries(MIGRATION_MAP)) {
     if (flatKeys.has(oldKey)) {
+      // Safety check: If this key is a V2 container (like 'model') and it's
+      // already an object, it's likely already in V2 format. Skip migration
+      // to prevent double-nesting (e.g., model.name.name).
+      if (
+        KNOWN_V2_CONTAINERS.has(oldKey) &&
+        typeof flatSettings[oldKey] === 'object' &&
+        flatSettings[oldKey] !== null &&
+        !Array.isArray(flatSettings[oldKey])
+      ) {
+        // This is already a V2 container, carry it over as-is
+        v2Settings[oldKey] = flatSettings[oldKey];
+        flatKeys.delete(oldKey);
+        continue;
+      }
+
       setNestedProperty(v2Settings, newPath, flatSettings[oldKey]);
       flatKeys.delete(oldKey);
     }
@@ -287,6 +314,9 @@ function migrateSettingsToV2(
     }
   }
 
+  // Set version field to indicate this is a V2 settings file
+  v2Settings[SETTINGS_VERSION_KEY] = SETTINGS_VERSION;
+
   return v2Settings;
 }
 
@@ -336,6 +366,11 @@ export function migrateSettingsToV1(
 
   // Carry over any unrecognized keys
   for (const remainingKey of v2Keys) {
+    // Skip the version field - it's only for V2 format
+    if (remainingKey === SETTINGS_VERSION_KEY) {
+      continue;
+    }
+
     const value = v2Settings[remainingKey];
     if (value === undefined) {
       continue;
@@ -448,6 +483,27 @@ export class LoadedSettings {
   }
 }
 
+/**
+ * Creates a minimal LoadedSettings instance with empty settings.
+ * Used in stream-json mode where settings are ignored.
+ */
+export function createMinimalSettings(): LoadedSettings {
+  const emptySettingsFile: SettingsFile = {
+    path: '',
+    settings: {},
+    originalSettings: {},
+    rawJson: '{}',
+  };
+  return new LoadedSettings(
+    emptySettingsFile,
+    emptySettingsFile,
+    emptySettingsFile,
+    emptySettingsFile,
+    false,
+    new Set(),
+  );
+}
+
 function findEnvFile(startDir: string): string | null {
   let currentDir = path.resolve(startDir);
   while (true) {
@@ -621,6 +677,22 @@ export function loadSettings(
             }
             settingsObject = migratedSettings;
           }
+        } else if (!(SETTINGS_VERSION_KEY in settingsObject)) {
+          // No migration needed, but version field is missing - add it for future optimizations
+          settingsObject[SETTINGS_VERSION_KEY] = SETTINGS_VERSION;
+          if (MIGRATE_V2_OVERWRITE) {
+            try {
+              fs.writeFileSync(
+                filePath,
+                JSON.stringify(settingsObject, null, 2),
+                'utf-8',
+              );
+            } catch (e) {
+              console.error(
+                `Error adding version to settings file: ${getErrorMessage(e)}`,
+              );
+            }
+          }
         }
         return { settings: settingsObject as Settings, rawJson: content };
       }
@@ -787,5 +859,6 @@ export function saveSettings(settingsFile: SettingsFile): void {
     );
   } catch (error) {
     console.error('Error saving user settings file:', error);
+    throw error;
   }
 }

packages/cli/src/config/settingsSchema.ts

@@ -12,6 +12,7 @@ import type {
   ChatCompressionSettings,
 } from '@qwen-code/qwen-code-core';
 import {
+  ApprovalMode,
   DEFAULT_TRUNCATE_TOOL_OUTPUT_LINES,
   DEFAULT_TRUNCATE_TOOL_OUTPUT_THRESHOLD,
 } from '@qwen-code/qwen-code-core';
@@ -166,16 +167,6 @@ const SETTINGS_SCHEMA = {
           },
         },
       },
-      enablePromptCompletion: {
-        type: 'boolean',
-        label: 'Enable Prompt Completion',
-        category: 'General',
-        requiresRestart: true,
-        default: false,
-        description:
-          'Enable AI-powered prompt completion suggestions while typing.',
-        showInDialog: true,
-      },
       debugKeystrokeLogging: {
         type: 'boolean',
         label: 'Debug Keystroke Logging',
@@ -185,6 +176,23 @@ const SETTINGS_SCHEMA = {
         description: 'Enable debug logging of keystrokes to the console.',
         showInDialog: true,
       },
+      language: {
+        type: 'enum',
+        label: 'Language',
+        category: 'General',
+        requiresRestart: false,
+        default: 'auto',
+        description:
+          'The language for the user interface. Use "auto" to detect from system settings. ' +
+          'You can also use custom language codes (e.g., "es", "fr") by placing JS language files ' +
+          'in ~/.qwen/locales/ (e.g., ~/.qwen/locales/es.js).',
+        showInDialog: true,
+        options: [
+          { value: 'auto', label: 'Auto (detect from system)' },
+          { value: 'en', label: 'English' },
+          { value: 'zh', label: '中文 (Chinese)' },
+        ],
+      },
     },
   },
   output: {
@@ -549,6 +557,16 @@ const SETTINGS_SCHEMA = {
         description: 'Disable all loop detection checks (streaming and LLM).',
         showInDialog: true,
       },
+      skipStartupContext: {
+        type: 'boolean',
+        label: 'Skip Startup Context',
+        category: 'Model',
+        requiresRestart: true,
+        default: false,
+        description:
+          'Avoid sending the workspace startup context at the beginning of each session.',
+        showInDialog: true,
+      },
       enableOpenAILogging: {
         type: 'boolean',
         label: 'Enable OpenAI Logging',
@@ -558,6 +576,16 @@ const SETTINGS_SCHEMA = {
         description: 'Enable OpenAI logging.',
         showInDialog: true,
       },
+      openAILoggingDir: {
+        type: 'string',
+        label: 'OpenAI Logging Directory',
+        category: 'Model',
+        requiresRestart: false,
+        default: undefined as string | undefined,
+        description:
+          'Custom directory path for OpenAI API logs. If not specified, defaults to logs/openai in the current working directory.',
+        showInDialog: true,
+      },
       generationConfig: {
         type: 'object',
         label: 'Generation Configuration',
@@ -810,14 +838,20 @@ const SETTINGS_SCHEMA = {
         mergeStrategy: MergeStrategy.UNION,
       },
       approvalMode: {
-        type: 'string',
-        label: 'Default Approval Mode',
+        type: 'enum',
+        label: 'Approval Mode',
         category: 'Tools',
         requiresRestart: false,
-        default: 'default',
+        default: ApprovalMode.DEFAULT,
         description:
-          'Default approval mode for tool usage. Valid values: plan, default, auto-edit, yolo.',
+          'Approval mode for tool usage. Controls how tools are approved before execution.',
         showInDialog: true,
+        options: [
+          { value: ApprovalMode.PLAN, label: 'Plan' },
+          { value: ApprovalMode.DEFAULT, label: 'Default' },
+          { value: ApprovalMode.AUTO_EDIT, label: 'Auto Edit' },
+          { value: ApprovalMode.YOLO, label: 'YOLO' },
+        ],
       },
       discoveryCommand: {
         type: 'string',
@@ -847,6 +881,16 @@ const SETTINGS_SCHEMA = {
           'Use ripgrep for file content search instead of the fallback implementation. Provides faster search performance.',
         showInDialog: true,
       },
+      useBuiltinRipgrep: {
+        type: 'boolean',
+        label: 'Use Builtin Ripgrep',
+        category: 'Tools',
+        requiresRestart: false,
+        default: true,
+        description:
+          'Use the bundled ripgrep binary. When set to false, the system-level "rg" command will be used instead. This setting is only effective when useRipgrep is true.',
+        showInDialog: true,
+      },
       enableToolOutputTruncation: {
         type: 'boolean',
         label: 'Enable Tool Output Truncation',
@@ -991,6 +1035,24 @@ const SETTINGS_SCHEMA = {
             description: 'Whether to use an external authentication flow.',
             showInDialog: false,
           },
+          apiKey: {
+            type: 'string',
+            label: 'API Key',
+            category: 'Security',
+            requiresRestart: true,
+            default: undefined as string | undefined,
+            description: 'API key for OpenAI compatible authentication.',
+            showInDialog: false,
+          },
+          baseUrl: {
+            type: 'string',
+            label: 'Base URL',
+            category: 'Security',
+            requiresRestart: true,
+            default: undefined as string | undefined,
+            description: 'Base URL for OpenAI compatible API.',
+            showInDialog: false,
+          },
         },
       },
     },
@@ -1044,17 +1106,36 @@ const SETTINGS_SCHEMA = {
       },
       tavilyApiKey: {
         type: 'string',
-        label: 'Tavily API Key',
+        label: 'Tavily API Key (Deprecated)',
         category: 'Advanced',
         requiresRestart: false,
         default: undefined as string | undefined,
         description:
-          'The API key for the Tavily API. Required to enable the web_search tool functionality.',
+          '⚠️ DEPRECATED: Please use webSearch.provider configuration instead. Legacy API key for the Tavily API.',
         showInDialog: false,
       },
     },
   },
 
+  webSearch: {
+    type: 'object',
+    label: 'Web Search',
+    category: 'Advanced',
+    requiresRestart: true,
+    default: undefined as
+      | {
+          provider: Array<{
+            type: 'tavily' | 'google' | 'dashscope';
+            apiKey?: string;
+            searchEngineId?: string;
+          }>;
+          default: string;
+        }
+      | undefined,
+    description: 'Configuration for web search providers.',
+    showInDialog: false,
+  },
+
   experimental: {
     type: 'object',
     label: 'Experimental',

packages/cli/src/config/webSearch.ts

@@ -0,0 +1,121 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { AuthType } from '@qwen-code/qwen-code-core';
+import type { WebSearchProviderConfig } from '@qwen-code/qwen-code-core';
+import type { Settings } from './settings.js';
+
+/**
+ * CLI arguments related to web search configuration
+ */
+export interface WebSearchCliArgs {
+  tavilyApiKey?: string;
+  googleApiKey?: string;
+  googleSearchEngineId?: string;
+  webSearchDefault?: string;
+}
+
+/**
+ * Web search configuration structure
+ */
+export interface WebSearchConfig {
+  provider: WebSearchProviderConfig[];
+  default: string;
+}
+
+/**
+ * Build webSearch configuration from multiple sources with priority:
+ * 1. settings.json (new format) - highest priority
+ * 2. Command line args + environment variables
+ * 3. Legacy tavilyApiKey (backward compatibility)
+ *
+ * @param argv - Command line arguments
+ * @param settings - User settings from settings.json
+ * @param authType - Authentication type (e.g., 'qwen-oauth')
+ * @returns WebSearch configuration or undefined if no providers available
+ */
+export function buildWebSearchConfig(
+  argv: WebSearchCliArgs,
+  settings: Settings,
+  authType?: string,
+): WebSearchConfig | undefined {
+  const isQwenOAuth = authType === AuthType.QWEN_OAUTH;
+
+  // Step 1: Collect providers from settings or command line/env
+  let providers: WebSearchProviderConfig[] = [];
+  let userDefault: string | undefined;
+
+  if (settings.webSearch) {
+    // Use providers from settings.json
+    providers = [...settings.webSearch.provider];
+    userDefault = settings.webSearch.default;
+  } else {
+    // Build providers from command line args and environment variables
+    const tavilyKey =
+      argv.tavilyApiKey ||
+      settings.advanced?.tavilyApiKey ||
+      process.env['TAVILY_API_KEY'];
+    if (tavilyKey) {
+      providers.push({
+        type: 'tavily',
+        apiKey: tavilyKey,
+      } as WebSearchProviderConfig);
+    }
+
+    const googleKey = argv.googleApiKey || process.env['GOOGLE_API_KEY'];
+    const googleEngineId =
+      argv.googleSearchEngineId || process.env['GOOGLE_SEARCH_ENGINE_ID'];
+    if (googleKey && googleEngineId) {
+      providers.push({
+        type: 'google',
+        apiKey: googleKey,
+        searchEngineId: googleEngineId,
+      } as WebSearchProviderConfig);
+    }
+  }
+
+  // Step 2: Ensure dashscope is available for qwen-oauth users
+  if (isQwenOAuth) {
+    const hasDashscope = providers.some((p) => p.type === 'dashscope');
+    if (!hasDashscope) {
+      providers.push({ type: 'dashscope' } as WebSearchProviderConfig);
+    }
+  }
+
+  // Step 3: If no providers available, return undefined
+  if (providers.length === 0) {
+    return undefined;
+  }
+
+  // Step 4: Determine default provider
+  // Priority: user explicit config > CLI arg > first available provider (tavily > google > dashscope)
+  const providerPriority: Array<'tavily' | 'google' | 'dashscope'> = [
+    'tavily',
+    'google',
+    'dashscope',
+  ];
+
+  // Determine default provider based on availability
+  let defaultProvider = userDefault || argv.webSearchDefault;
+  if (!defaultProvider) {
+    // Find first available provider by priority order
+    for (const providerType of providerPriority) {
+      if (providers.some((p) => p.type === providerType)) {
+        defaultProvider = providerType;
+        break;
+      }
+    }
+    // Fallback to first available provider if none found in priority list
+    if (!defaultProvider) {
+      defaultProvider = providers[0]?.type || 'dashscope';
+    }
+  }
+
+  return {
+    provider: providers,
+    default: defaultProvider,
+  };
+}

packages/cli/src/core/auth.ts

@@ -8,6 +8,8 @@ import {
   type AuthType,
   type Config,
   getErrorMessage,
+  logAuth,
+  AuthEvent,
 } from '@qwen-code/qwen-code-core';
 
 /**
@@ -25,11 +27,21 @@ export async function performInitialAuth(
   }
 
   try {
-    await config.refreshAuth(authType);
+    await config.refreshAuth(authType, true);
     // The console.log is intentionally left out here.
     // We can add a dedicated startup message later if needed.
+
+    // Log authentication success
+    const authEvent = new AuthEvent(authType, 'auto', 'success');
+    logAuth(config, authEvent);
   } catch (e) {
-    return `Failed to login. Message: ${getErrorMessage(e)}`;
+    const errorMessage = `Failed to login. Message: ${getErrorMessage(e)}`;
+
+    // Log authentication failure
+    const authEvent = new AuthEvent(authType, 'auto', 'error', errorMessage);
+    logAuth(config, authEvent);
+
+    return errorMessage;
   }
 
   return null;

packages/cli/src/core/initializer.ts

@@ -11,9 +11,10 @@ import {
   logIdeConnection,
   type Config,
 } from '@qwen-code/qwen-code-core';
-import { type LoadedSettings } from '../config/settings.js';
+import { type LoadedSettings, SettingScope } from '../config/settings.js';
 import { performInitialAuth } from './auth.js';
 import { validateTheme } from './theme.js';
+import { initializeI18n } from '../i18n/index.js';
 
 export interface InitializationResult {
   authError: string | null;
@@ -33,10 +34,24 @@ export async function initializeApp(
   config: Config,
   settings: LoadedSettings,
 ): Promise<InitializationResult> {
-  const authError = await performInitialAuth(
-    config,
-    settings.merged.security?.auth?.selectedType,
-  );
+  // Initialize i18n system
+  const languageSetting =
+    process.env['QWEN_CODE_LANG'] ||
+    settings.merged.general?.language ||
+    'auto';
+  await initializeI18n(languageSetting);
+
+  const authType = settings.merged.security?.auth?.selectedType;
+  const authError = await performInitialAuth(config, authType);
+
+  // Fallback to user select when initial authentication fails
+  if (authError) {
+    settings.setValue(
+      SettingScope.User,
+      'security.auth.selectedType',
+      undefined,
+    );
+  }
   const themeError = validateTheme(settings);
 
   const shouldOpenAuthDialog =

packages/cli/src/core/theme.ts

@@ -6,6 +6,7 @@
 
 import { themeManager } from '../ui/themes/theme-manager.js';
 import { type LoadedSettings } from '../config/settings.js';
+import { t } from '../i18n/index.js';
 
 /**
  * Validates the configured theme.
@@ -15,7 +16,9 @@ import { type LoadedSettings } from '../config/settings.js';
 export function validateTheme(settings: LoadedSettings): string | null {
   const effectiveTheme = settings.merged.ui?.theme;
   if (effectiveTheme && !themeManager.findThemeByName(effectiveTheme)) {
-    return `Theme "${effectiveTheme}" not found.`;
+    return t('Theme "{{themeName}}" not found.', {
+      themeName: effectiveTheme,
+    });
   }
   return null;
 }

packages/cli/src/gemini.test.tsx

@@ -22,6 +22,7 @@ import {
 import { type LoadedSettings } from './config/settings.js';
 import { appEvents, AppEvent } from './utils/events.js';
 import type { Config } from '@qwen-code/qwen-code-core';
+import { OutputFormat } from '@qwen-code/qwen-code-core';
 
 // Custom error to identify mock process.exit calls
 class MockProcessExitError extends Error {
@@ -158,6 +159,7 @@ describe('gemini.tsx main function', () => {
         getScreenReader: () => false,
         getGeminiMdFileCount: () => 0,
         getProjectRoot: () => '/',
+        getOutputFormat: () => OutputFormat.TEXT,
       } as unknown as Config;
     });
     vi.mocked(loadSettings).mockReturnValue({
@@ -230,6 +232,143 @@ describe('gemini.tsx main function', () => {
     // Avoid the process.exit error from being thrown.
     processExitSpy.mockRestore();
   });
+
+  it('invokes runNonInteractiveStreamJson and performs cleanup in stream-json mode', async () => {
+    const originalIsTTY = Object.getOwnPropertyDescriptor(
+      process.stdin,
+      'isTTY',
+    );
+    const originalIsRaw = Object.getOwnPropertyDescriptor(
+      process.stdin,
+      'isRaw',
+    );
+    Object.defineProperty(process.stdin, 'isTTY', {
+      value: true,
+      configurable: true,
+    });
+    Object.defineProperty(process.stdin, 'isRaw', {
+      value: false,
+      configurable: true,
+    });
+
+    const processExitSpy = vi
+      .spyOn(process, 'exit')
+      .mockImplementation((code) => {
+        throw new MockProcessExitError(code);
+      });
+
+    const { loadCliConfig, parseArguments } = await import(
+      './config/config.js'
+    );
+    const { loadSettings } = await import('./config/settings.js');
+    const cleanupModule = await import('./utils/cleanup.js');
+    const extensionModule = await import('./config/extension.js');
+    const validatorModule = await import('./validateNonInterActiveAuth.js');
+    const streamJsonModule = await import('./nonInteractive/session.js');
+    const initializerModule = await import('./core/initializer.js');
+    const startupWarningsModule = await import('./utils/startupWarnings.js');
+    const userStartupWarningsModule = await import(
+      './utils/userStartupWarnings.js'
+    );
+
+    vi.mocked(cleanupModule.cleanupCheckpoints).mockResolvedValue(undefined);
+    vi.mocked(cleanupModule.registerCleanup).mockImplementation(() => {});
+    const runExitCleanupMock = vi.mocked(cleanupModule.runExitCleanup);
+    runExitCleanupMock.mockResolvedValue(undefined);
+    vi.spyOn(extensionModule, 'loadExtensions').mockReturnValue([]);
+    vi.spyOn(
+      extensionModule.ExtensionStorage,
+      'getUserExtensionsDir',
+    ).mockReturnValue('/tmp/extensions');
+    vi.spyOn(initializerModule, 'initializeApp').mockResolvedValue({
+      authError: null,
+      themeError: null,
+      shouldOpenAuthDialog: false,
+      geminiMdFileCount: 0,
+    });
+    vi.spyOn(startupWarningsModule, 'getStartupWarnings').mockResolvedValue([]);
+    vi.spyOn(
+      userStartupWarningsModule,
+      'getUserStartupWarnings',
+    ).mockResolvedValue([]);
+
+    const validatedConfig = { validated: true } as unknown as Config;
+    const validateAuthSpy = vi
+      .spyOn(validatorModule, 'validateNonInteractiveAuth')
+      .mockResolvedValue(validatedConfig);
+    const runStreamJsonSpy = vi
+      .spyOn(streamJsonModule, 'runNonInteractiveStreamJson')
+      .mockResolvedValue(undefined);
+
+    vi.mocked(loadSettings).mockReturnValue({
+      errors: [],
+      merged: {
+        advanced: {},
+        security: { auth: {} },
+        ui: {},
+      },
+      setValue: vi.fn(),
+      forScope: () => ({ settings: {}, originalSettings: {}, path: '' }),
+    } as never);
+
+    vi.mocked(parseArguments).mockResolvedValue({
+      extensions: [],
+    } as never);
+
+    const configStub = {
+      isInteractive: () => false,
+      getQuestion: () => '  hello stream  ',
+      getSandbox: () => false,
+      getDebugMode: () => false,
+      getListExtensions: () => false,
+      getMcpServers: () => ({}),
+      initialize: vi.fn().mockResolvedValue(undefined),
+      getIdeMode: () => false,
+      getExperimentalZedIntegration: () => false,
+      getScreenReader: () => false,
+      getGeminiMdFileCount: () => 0,
+      getProjectRoot: () => '/',
+      getInputFormat: () => 'stream-json',
+      getContentGeneratorConfig: () => ({ authType: 'test-auth' }),
+    } as unknown as Config;
+
+    vi.mocked(loadCliConfig).mockResolvedValue(configStub);
+
+    process.env['SANDBOX'] = '1';
+    try {
+      await main();
+    } catch (error) {
+      if (!(error instanceof MockProcessExitError)) {
+        throw error;
+      }
+    } finally {
+      processExitSpy.mockRestore();
+      if (originalIsTTY) {
+        Object.defineProperty(process.stdin, 'isTTY', originalIsTTY);
+      } else {
+        delete (process.stdin as { isTTY?: unknown }).isTTY;
+      }
+      if (originalIsRaw) {
+        Object.defineProperty(process.stdin, 'isRaw', originalIsRaw);
+      } else {
+        delete (process.stdin as { isRaw?: unknown }).isRaw;
+      }
+      delete process.env['SANDBOX'];
+    }
+
+    expect(runStreamJsonSpy).toHaveBeenCalledTimes(1);
+    const [configArg, inputArg] = runStreamJsonSpy.mock.calls[0];
+    expect(configArg).toBe(validatedConfig);
+    expect(inputArg).toBe('hello stream');
+
+    expect(validateAuthSpy).toHaveBeenCalledWith(
+      undefined,
+      undefined,
+      configStub,
+      expect.any(Object),
+    );
+    expect(runExitCleanupMock).toHaveBeenCalledTimes(1);
+  });
 });
 
 describe('gemini.tsx main function kitty protocol', () => {
@@ -327,13 +466,21 @@ describe('gemini.tsx main function kitty protocol', () => {
       openaiLogging: undefined,
       openaiApiKey: undefined,
       openaiBaseUrl: undefined,
+      openaiLoggingDir: undefined,
       proxy: undefined,
       includeDirectories: undefined,
       tavilyApiKey: undefined,
+      googleApiKey: undefined,
+      googleSearchEngineId: undefined,
+      webSearchDefault: undefined,
       screenReader: undefined,
       vlmSwitchMode: undefined,
       useSmartEdit: undefined,
+      inputFormat: undefined,
       outputFormat: undefined,
+      includePartialMessages: undefined,
+      continue: undefined,
+      resume: undefined,
     });
 
     await main();
@@ -408,6 +555,7 @@ describe('startInteractiveUI', () => {
   vi.mock('./utils/cleanup.js', () => ({
     cleanupCheckpoints: vi.fn(() => Promise.resolve()),
     registerCleanup: vi.fn(),
+    runExitCleanup: vi.fn(() => Promise.resolve()),
   }));
 
   vi.mock('ink', () => ({

packages/cli/src/gemini.tsx

@@ -4,63 +4,61 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import React from 'react';
+import type { Config } from '@qwen-code/qwen-code-core';
+import {
+  AuthType,
+  getOauthClient,
+  InputFormat,
+  logUserPrompt,
+} from '@qwen-code/qwen-code-core';
 import { render } from 'ink';
-import { AppContainer } from './ui/AppContainer.js';
-import { loadCliConfig, parseArguments } from './config/config.js';
-import * as cliConfig from './config/config.js';
-import { readStdin } from './utils/readStdin.js';
+import dns from 'node:dns';
+import os from 'node:os';
 import { basename } from 'node:path';
 import v8 from 'node:v8';
-import os from 'node:os';
-import dns from 'node:dns';
-import { randomUUID } from 'node:crypto';
-import { start_sandbox } from './utils/sandbox.js';
-import type { DnsResolutionOrder, LoadedSettings } from './config/settings.js';
-import {
-  loadSettings,
-  migrateDeprecatedSettings,
-  SettingScope,
-} from './config/settings.js';
-import { themeManager } from './ui/themes/theme-manager.js';
-import { getStartupWarnings } from './utils/startupWarnings.js';
-import { getUserStartupWarnings } from './utils/userStartupWarnings.js';
-import { ConsolePatcher } from './ui/utils/ConsolePatcher.js';
-import { runNonInteractive } from './nonInteractiveCli.js';
+import React from 'react';
+import { validateAuthMethod } from './config/auth.js';
+import * as cliConfig from './config/config.js';
+import { loadCliConfig, parseArguments } from './config/config.js';
 import { ExtensionStorage, loadExtensions } from './config/extension.js';
+import type { DnsResolutionOrder, LoadedSettings } from './config/settings.js';
+import { loadSettings, migrateDeprecatedSettings } from './config/settings.js';
+import {
+  initializeApp,
+  type InitializationResult,
+} from './core/initializer.js';
+import { runNonInteractive } from './nonInteractiveCli.js';
+import { runNonInteractiveStreamJson } from './nonInteractive/session.js';
+import { AppContainer } from './ui/AppContainer.js';
+import { setMaxSizedBoxDebugging } from './ui/components/shared/MaxSizedBox.js';
+import { KeypressProvider } from './ui/contexts/KeypressContext.js';
+import { SessionStatsProvider } from './ui/contexts/SessionContext.js';
+import { SettingsContext } from './ui/contexts/SettingsContext.js';
+import { VimModeProvider } from './ui/contexts/VimModeContext.js';
+import { useKittyKeyboardProtocol } from './ui/hooks/useKittyKeyboardProtocol.js';
+import { themeManager } from './ui/themes/theme-manager.js';
+import { ConsolePatcher } from './ui/utils/ConsolePatcher.js';
+import { detectAndEnableKittyProtocol } from './ui/utils/kittyProtocolDetector.js';
+import { checkForUpdates } from './ui/utils/updateCheck.js';
 import {
   cleanupCheckpoints,
   registerCleanup,
   runExitCleanup,
 } from './utils/cleanup.js';
-import { getCliVersion } from './utils/version.js';
-import type { Config } from '@qwen-code/qwen-code-core';
-import {
-  AuthType,
-  getOauthClient,
-  logUserPrompt,
-} from '@qwen-code/qwen-code-core';
-import {
-  initializeApp,
-  type InitializationResult,
-} from './core/initializer.js';
-import { validateAuthMethod } from './config/auth.js';
-import { setMaxSizedBoxDebugging } from './ui/components/shared/MaxSizedBox.js';
-import { SettingsContext } from './ui/contexts/SettingsContext.js';
-import { detectAndEnableKittyProtocol } from './ui/utils/kittyProtocolDetector.js';
-import { checkForUpdates } from './ui/utils/updateCheck.js';
+import { AppEvent, appEvents } from './utils/events.js';
 import { handleAutoUpdate } from './utils/handleAutoUpdate.js';
-import { computeWindowTitle } from './utils/windowTitle.js';
-import { SessionStatsProvider } from './ui/contexts/SessionContext.js';
-import { VimModeProvider } from './ui/contexts/VimModeContext.js';
-import { KeypressProvider } from './ui/contexts/KeypressContext.js';
-import { appEvents, AppEvent } from './utils/events.js';
-import { useKittyKeyboardProtocol } from './ui/hooks/useKittyKeyboardProtocol.js';
+import { readStdin } from './utils/readStdin.js';
 import {
-  relaunchOnExitCode,
   relaunchAppInChildProcess,
+  relaunchOnExitCode,
 } from './utils/relaunch.js';
+import { start_sandbox } from './utils/sandbox.js';
+import { getStartupWarnings } from './utils/startupWarnings.js';
+import { getUserStartupWarnings } from './utils/userStartupWarnings.js';
+import { getCliVersion } from './utils/version.js';
+import { computeWindowTitle } from './utils/windowTitle.js';
 import { validateNonInteractiveAuth } from './validateNonInterActiveAuth.js';
+import { showResumeSessionPicker } from './ui/components/ResumeSessionPicker.js';
 
 export function validateDnsResolutionOrder(
   order: string | undefined,
@@ -110,9 +108,9 @@ function getNodeMemoryArgs(isDebugMode: boolean): string[] {
   return [];
 }
 
-import { runZedIntegration } from './zed-integration/zedIntegration.js';
-import { loadSandboxConfig } from './config/sandboxConfig.js';
 import { ExtensionEnablementManager } from './config/extensions/extensionEnablement.js';
+import { loadSandboxConfig } from './config/sandboxConfig.js';
+import { runAcpAgent } from './acp-integration/acpAgent.js';
 
 export function setupUnhandledRejectionHandler() {
   let unhandledRejectionOccurred = false;
@@ -160,7 +158,7 @@ export async function startInteractiveUI(
             process.platform === 'win32' || nodeMajorVersion < 20
           }
         >
-          <SessionStatsProvider>
+          <SessionStatsProvider sessionId={config.getSessionId()}>
             <VimModeProvider settings={settings}>
               <AppContainer
                 config={config}
@@ -209,9 +207,8 @@ export async function main() {
   const settings = loadSettings();
   migrateDeprecatedSettings(settings);
   await cleanupCheckpoints();
-  const sessionId = randomUUID();
 
-  const argv = await parseArguments(settings.merged);
+  let argv = await parseArguments(settings.merged);
 
   // Check for invalid input combinations early to prevent crashes
   if (argv.promptInteractive && !process.stdin.isTTY) {
@@ -222,28 +219,11 @@ export async function main() {
   }
 
   const isDebugMode = cliConfig.isDebugMode(argv);
-  const consolePatcher = new ConsolePatcher({
-    stderr: true,
-    debugMode: isDebugMode,
-  });
-  consolePatcher.patch();
-  registerCleanup(consolePatcher.cleanup);
 
   dns.setDefaultResultOrder(
     validateDnsResolutionOrder(settings.merged.advanced?.dnsResolutionOrder),
   );
 
-  // Set a default auth type if one isn't set.
-  if (!settings.merged.security?.auth?.selectedType) {
-    if (process.env['CLOUD_SHELL'] === 'true') {
-      settings.setValue(
-        SettingScope.User,
-        'selectedAuthType',
-        AuthType.CLOUD_SHELL,
-      );
-    }
-  }
-
   // Load custom themes from settings
   themeManager.loadCustomThemes(settings.merged.ui?.customThemes);
 
@@ -272,7 +252,6 @@ export async function main() {
         settings.merged,
         [],
         new ExtensionEnablementManager(ExtensionStorage.getUserExtensionsDir()),
-        sessionId,
         argv,
       );
 
@@ -338,6 +317,18 @@ export async function main() {
     }
   }
 
+  // Handle --resume without a session ID by showing the session picker
+  if (argv.resume === '') {
+    const selectedSessionId = await showResumeSessionPicker();
+    if (!selectedSessionId) {
+      // User cancelled or no sessions available
+      process.exit(0);
+    }
+
+    // Update argv with the selected session ID
+    argv = { ...argv, resume: selectedSessionId };
+  }
+
   // We are now past the logic handling potentially launching a child process
   // to run Gemini CLI. It is now safe to perform expensive initialization that
   // may have side effects.
@@ -351,7 +342,6 @@ export async function main() {
       settings.merged,
       extensions,
       extensionEnablementManager,
-      sessionId,
       argv,
     );
 
@@ -363,6 +353,15 @@ export async function main() {
       process.exit(0);
     }
 
+    // Setup unified ConsolePatcher based on interactive mode
+    const isInteractive = config.isInteractive();
+    const consolePatcher = new ConsolePatcher({
+      stderr: isInteractive,
+      debugMode: isDebugMode,
+    });
+    consolePatcher.patch();
+    registerCleanup(consolePatcher.cleanup);
+
     const wasRaw = process.stdin.isRaw;
     let kittyProtocolDetectionComplete: Promise<boolean> | undefined;
     if (config.isInteractive() && !wasRaw && process.stdin.isTTY) {
@@ -396,13 +395,17 @@ export async function main() {
     }
 
     if (config.getExperimentalZedIntegration()) {
-      return runZedIntegration(config, settings, extensions, argv);
+      return runAcpAgent(config, settings, extensions, argv);
     }
 
     let input = config.getQuestion();
     const startupWarnings = [
       ...(await getStartupWarnings()),
-      ...(await getUserStartupWarnings()),
+      ...(await getUserStartupWarnings({
+        workspaceRoot: process.cwd(),
+        useRipgrep: settings.merged.tools?.useRipgrep ?? true,
+        useBuiltinRipgrep: settings.merged.tools?.useBuiltinRipgrep ?? true,
+      })),
     ];
 
     // Render UI, passing necessary config values. Check that there is no command line question.
@@ -421,14 +424,43 @@ export async function main() {
 
     await config.initialize();
 
-    // If not a TTY, read from stdin
-    // This is for cases where the user pipes input directly into the command
-    if (!process.stdin.isTTY) {
+    // Check input format BEFORE reading stdin
+    // In STREAM_JSON mode, stdin should be left for StreamJsonInputReader
+    const inputFormat =
+      typeof config.getInputFormat === 'function'
+        ? config.getInputFormat()
+        : InputFormat.TEXT;
+
+    // Only read stdin if NOT in stream-json mode
+    // In stream-json mode, stdin is used for protocol messages (control requests, etc.)
+    // and should be consumed by StreamJsonInputReader instead
+    if (inputFormat !== InputFormat.STREAM_JSON && !process.stdin.isTTY) {
       const stdinData = await readStdin();
       if (stdinData) {
         input = `${stdinData}\n\n${input}`;
       }
     }
+
+    const nonInteractiveConfig = await validateNonInteractiveAuth(
+      settings.merged.security?.auth?.selectedType,
+      settings.merged.security?.auth?.useExternal,
+      config,
+      settings,
+    );
+
+    const prompt_id = Math.random().toString(16).slice(2);
+
+    if (inputFormat === InputFormat.STREAM_JSON) {
+      const trimmedInput = (input ?? '').trim();
+
+      await runNonInteractiveStreamJson(
+        nonInteractiveConfig,
+        trimmedInput.length > 0 ? trimmedInput : '',
+      );
+      await runExitCleanup();
+      process.exit(0);
+    }
+
     if (!input) {
       console.error(
         `No input provided via stdin. Input can be provided by piping data into gemini or using the --prompt option.`,
@@ -436,7 +468,6 @@ export async function main() {
       process.exit(1);
     }
 
-    const prompt_id = Math.random().toString(16).slice(2);
     logUserPrompt(config, {
       'event.name': 'user_prompt',
       'event.timestamp': new Date().toISOString(),
@@ -446,15 +477,8 @@ export async function main() {
       prompt_length: input.length,
     });
 
-    const nonInteractiveConfig = await validateNonInteractiveAuth(
-      settings.merged.security?.auth?.selectedType,
-      settings.merged.security?.auth?.useExternal,
-      config,
-      settings,
-    );
-
     if (config.getDebugMode()) {
-      console.log('Session ID: %s', sessionId);
+      console.log('Session ID: %s', config.getSessionId());
     }
 
     await runNonInteractive(nonInteractiveConfig, settings, input, prompt_id);

packages/cli/src/i18n/index.ts

@@ -0,0 +1,232 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import * as fs from 'node:fs';
+import * as path from 'node:path';
+import { fileURLToPath, pathToFileURL } from 'node:url';
+import { homedir } from 'node:os';
+
+export type SupportedLanguage = 'en' | 'zh' | string; // Allow custom language codes
+
+// State
+let currentLanguage: SupportedLanguage = 'en';
+let translations: Record<string, string> = {};
+
+// Cache
+type TranslationDict = Record<string, string>;
+const translationCache: Record<string, TranslationDict> = {};
+const loadingPromises: Record<string, Promise<TranslationDict>> = {};
+
+// Path helpers
+const getBuiltinLocalesDir = (): string => {
+  const __filename = fileURLToPath(import.meta.url);
+  return path.join(path.dirname(__filename), 'locales');
+};
+
+const getUserLocalesDir = (): string =>
+  path.join(homedir(), '.qwen', 'locales');
+
+/**
+ * Get the path to the user's custom locales directory.
+ * Users can place custom language packs (e.g., es.js, fr.js) in this directory.
+ * @returns The path to ~/.qwen/locales
+ */
+export function getUserLocalesDirectory(): string {
+  return getUserLocalesDir();
+}
+
+const getLocalePath = (
+  lang: SupportedLanguage,
+  useUserDir: boolean = false,
+): string => {
+  const baseDir = useUserDir ? getUserLocalesDir() : getBuiltinLocalesDir();
+  return path.join(baseDir, `${lang}.js`);
+};
+
+// Language detection
+export function detectSystemLanguage(): SupportedLanguage {
+  const envLang = process.env['QWEN_CODE_LANG'] || process.env['LANG'];
+  if (envLang?.startsWith('zh')) return 'zh';
+  if (envLang?.startsWith('en')) return 'en';
+
+  try {
+    const locale = Intl.DateTimeFormat().resolvedOptions().locale;
+    if (locale.startsWith('zh')) return 'zh';
+  } catch {
+    // Fallback to default
+  }
+
+  return 'en';
+}
+
+// Translation loading
+async function loadTranslationsAsync(
+  lang: SupportedLanguage,
+): Promise<TranslationDict> {
+  if (translationCache[lang]) {
+    return translationCache[lang];
+  }
+
+  const existingPromise = loadingPromises[lang];
+  if (existingPromise) {
+    return existingPromise;
+  }
+
+  const loadPromise = (async () => {
+    // Try user directory first (for custom language packs), then builtin directory
+    const searchDirs = [
+      { dir: getUserLocalesDir(), isUser: true },
+      { dir: getBuiltinLocalesDir(), isUser: false },
+    ];
+
+    for (const { dir, isUser } of searchDirs) {
+      // Ensure directory exists
+      if (!fs.existsSync(dir)) {
+        continue;
+      }
+
+      const jsPath = getLocalePath(lang, isUser);
+      if (!fs.existsSync(jsPath)) {
+        continue;
+      }
+
+      try {
+        // Convert file path to file:// URL for cross-platform compatibility
+        const fileUrl = pathToFileURL(jsPath).href;
+        try {
+          const module = await import(fileUrl);
+          const result = module.default || module;
+          if (
+            result &&
+            typeof result === 'object' &&
+            Object.keys(result).length > 0
+          ) {
+            translationCache[lang] = result;
+            return result;
+          } else {
+            throw new Error('Module loaded but result is empty or invalid');
+          }
+        } catch {
+          // For builtin locales, try alternative import method (relative path)
+          if (!isUser) {
+            try {
+              const module = await import(`./locales/${lang}.js`);
+              const result = module.default || module;
+              if (
+                result &&
+                typeof result === 'object' &&
+                Object.keys(result).length > 0
+              ) {
+                translationCache[lang] = result;
+                return result;
+              }
+            } catch {
+              // Continue to next directory
+            }
+          }
+          // If import failed, continue to next directory
+          continue;
+        }
+      } catch (error) {
+        // Log warning but continue to next directory
+        if (isUser) {
+          console.warn(
+            `Failed to load translations from user directory for ${lang}:`,
+            error,
+          );
+        } else {
+          console.warn(`Failed to load JS translations for ${lang}:`, error);
+          if (error instanceof Error) {
+            console.warn(`Error details: ${error.message}`);
+            console.warn(`Stack: ${error.stack}`);
+          }
+        }
+        // Continue to next directory
+        continue;
+      }
+    }
+
+    // Return empty object if both directories fail
+    // Cache it to avoid repeated failed attempts
+    translationCache[lang] = {};
+    return {};
+  })();
+
+  loadingPromises[lang] = loadPromise;
+
+  // Clean up promise after completion to allow retry on next call if needed
+  loadPromise.finally(() => {
+    delete loadingPromises[lang];
+  });
+
+  return loadPromise;
+}
+
+function loadTranslations(lang: SupportedLanguage): TranslationDict {
+  // Only return from cache (JS files require async loading)
+  return translationCache[lang] || {};
+}
+
+// String interpolation
+function interpolate(
+  template: string,
+  params?: Record<string, string>,
+): string {
+  if (!params) return template;
+  return template.replace(
+    /\{\{(\w+)\}\}/g,
+    (match, key) => params[key] ?? match,
+  );
+}
+
+// Language setting helpers
+function resolveLanguage(lang: SupportedLanguage | 'auto'): SupportedLanguage {
+  return lang === 'auto' ? detectSystemLanguage() : lang;
+}
+
+// Public API
+export function setLanguage(lang: SupportedLanguage | 'auto'): void {
+  const resolvedLang = resolveLanguage(lang);
+  currentLanguage = resolvedLang;
+
+  // Try to load translations synchronously (from cache only)
+  const loaded = loadTranslations(resolvedLang);
+  translations = loaded;
+
+  // Warn if translations are empty and JS file exists (requires async loading)
+  if (Object.keys(loaded).length === 0) {
+    const userJsPath = getLocalePath(resolvedLang, true);
+    const builtinJsPath = getLocalePath(resolvedLang, false);
+    if (fs.existsSync(userJsPath) || fs.existsSync(builtinJsPath)) {
+      console.warn(
+        `Language file for ${resolvedLang} requires async loading. ` +
+          `Use setLanguageAsync() instead, or call initializeI18n() first.`,
+      );
+    }
+  }
+}
+
+export async function setLanguageAsync(
+  lang: SupportedLanguage | 'auto',
+): Promise<void> {
+  currentLanguage = resolveLanguage(lang);
+  translations = await loadTranslationsAsync(currentLanguage);
+}
+
+export function getCurrentLanguage(): SupportedLanguage {
+  return currentLanguage;
+}
+
+export function t(key: string, params?: Record<string, string>): string {
+  const translation = translations[key] ?? key;
+  return interpolate(translation, params);
+}
+
+export async function initializeI18n(
+  lang?: SupportedLanguage | 'auto',
+): Promise<void> {
+  await setLanguageAsync(lang ?? 'auto');
+}

packages/cli/src/nonInteractive/control/ControlContext.ts

@@ -0,0 +1,76 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Control Context
+ *
+ * Layer 1 of the control plane architecture. Provides shared, session-scoped
+ * state for all controllers and services, eliminating the need for prop
+ * drilling. Mutable fields are intentionally exposed so controllers can track
+ * runtime state (e.g. permission mode, active MCP clients).
+ */
+
+import type { Config, MCPServerConfig } from '@qwen-code/qwen-code-core';
+import type { Client } from '@modelcontextprotocol/sdk/client/index.js';
+import type { StreamJsonOutputAdapter } from '../io/StreamJsonOutputAdapter.js';
+import type { PermissionMode } from '../types.js';
+
+/**
+ * Control Context interface
+ *
+ * Provides shared access to session-scoped resources and mutable state
+ * for all controllers across both ControlDispatcher (protocol routing) and
+ * ControlService (programmatic API).
+ */
+export interface IControlContext {
+  readonly config: Config;
+  readonly streamJson: StreamJsonOutputAdapter;
+  readonly sessionId: string;
+  readonly abortSignal: AbortSignal;
+  readonly debugMode: boolean;
+
+  permissionMode: PermissionMode;
+  sdkMcpServers: Set<string>;
+  mcpClients: Map<string, { client: Client; config: MCPServerConfig }>;
+
+  onInterrupt?: () => void;
+}
+
+/**
+ * Control Context implementation
+ */
+export class ControlContext implements IControlContext {
+  readonly config: Config;
+  readonly streamJson: StreamJsonOutputAdapter;
+  readonly sessionId: string;
+  readonly abortSignal: AbortSignal;
+  readonly debugMode: boolean;
+
+  permissionMode: PermissionMode;
+  sdkMcpServers: Set<string>;
+  mcpClients: Map<string, { client: Client; config: MCPServerConfig }>;
+
+  onInterrupt?: () => void;
+
+  constructor(options: {
+    config: Config;
+    streamJson: StreamJsonOutputAdapter;
+    sessionId: string;
+    abortSignal: AbortSignal;
+    permissionMode?: PermissionMode;
+    onInterrupt?: () => void;
+  }) {
+    this.config = options.config;
+    this.streamJson = options.streamJson;
+    this.sessionId = options.sessionId;
+    this.abortSignal = options.abortSignal;
+    this.debugMode = options.config.getDebugMode();
+    this.permissionMode = options.permissionMode || 'default';
+    this.sdkMcpServers = new Set();
+    this.mcpClients = new Map();
+    this.onInterrupt = options.onInterrupt;
+  }
+}

packages/cli/src/nonInteractive/control/ControlDispatcher.test.ts

@@ -0,0 +1,924 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, beforeEach, vi } from 'vitest';
+import { ControlDispatcher } from './ControlDispatcher.js';
+import type { IControlContext } from './ControlContext.js';
+import type { SystemController } from './controllers/systemController.js';
+import type { StreamJsonOutputAdapter } from '../io/StreamJsonOutputAdapter.js';
+import type {
+  CLIControlRequest,
+  CLIControlResponse,
+  ControlResponse,
+  ControlRequestPayload,
+  CLIControlInitializeRequest,
+  CLIControlInterruptRequest,
+  CLIControlSetModelRequest,
+  CLIControlSupportedCommandsRequest,
+} from '../types.js';
+
+/**
+ * Creates a mock control context for testing
+ */
+function createMockContext(debugMode: boolean = false): IControlContext {
+  const abortController = new AbortController();
+  const mockStreamJson = {
+    send: vi.fn(),
+  } as unknown as StreamJsonOutputAdapter;
+
+  const mockConfig = {
+    getDebugMode: vi.fn().mockReturnValue(debugMode),
+  };
+
+  return {
+    config: mockConfig as unknown as IControlContext['config'],
+    streamJson: mockStreamJson,
+    sessionId: 'test-session-id',
+    abortSignal: abortController.signal,
+    debugMode,
+    permissionMode: 'default',
+    sdkMcpServers: new Set<string>(),
+    mcpClients: new Map(),
+  };
+}
+
+/**
+ * Creates a mock system controller for testing
+ */
+function createMockSystemController() {
+  return {
+    handleRequest: vi.fn(),
+    sendControlRequest: vi.fn(),
+    cleanup: vi.fn(),
+  } as unknown as SystemController;
+}
+
+describe('ControlDispatcher', () => {
+  let dispatcher: ControlDispatcher;
+  let mockContext: IControlContext;
+  let mockSystemController: SystemController;
+
+  beforeEach(() => {
+    mockContext = createMockContext();
+    mockSystemController = createMockSystemController();
+
+    // Mock SystemController constructor
+    vi.doMock('./controllers/systemController.js', () => ({
+      SystemController: vi.fn().mockImplementation(() => mockSystemController),
+    }));
+
+    dispatcher = new ControlDispatcher(mockContext);
+    // Replace with mock controller for easier testing
+    (
+      dispatcher as unknown as { systemController: SystemController }
+    ).systemController = mockSystemController;
+  });
+
+  describe('constructor', () => {
+    it('should initialize with context and create controllers', () => {
+      expect(dispatcher).toBeDefined();
+      expect(dispatcher.systemController).toBeDefined();
+    });
+
+    it('should listen to abort signal and shutdown when aborted', () => {
+      const abortController = new AbortController();
+
+      const context = {
+        ...createMockContext(),
+        abortSignal: abortController.signal,
+      };
+
+      const newDispatcher = new ControlDispatcher(context);
+      vi.spyOn(newDispatcher, 'shutdown');
+
+      abortController.abort();
+
+      // Give event loop a chance to process
+      return new Promise<void>((resolve) => {
+        setImmediate(() => {
+          expect(newDispatcher.shutdown).toHaveBeenCalled();
+          resolve();
+        });
+      });
+    });
+  });
+
+  describe('dispatch', () => {
+    it('should route initialize request to system controller', async () => {
+      const request: CLIControlRequest = {
+        type: 'control_request',
+        request_id: 'req-1',
+        request: {
+          subtype: 'initialize',
+        } as CLIControlInitializeRequest,
+      };
+
+      const mockResponse = {
+        subtype: 'initialize',
+        capabilities: { test: true },
+      };
+
+      vi.mocked(mockSystemController.handleRequest).mockResolvedValue(
+        mockResponse,
+      );
+
+      await dispatcher.dispatch(request);
+
+      expect(mockSystemController.handleRequest).toHaveBeenCalledWith(
+        request.request,
+        'req-1',
+      );
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'success',
+          request_id: 'req-1',
+          response: mockResponse,
+        },
+      });
+    });
+
+    it('should route interrupt request to system controller', async () => {
+      const request: CLIControlRequest = {
+        type: 'control_request',
+        request_id: 'req-2',
+        request: {
+          subtype: 'interrupt',
+        } as CLIControlInterruptRequest,
+      };
+
+      const mockResponse = { subtype: 'interrupt' };
+
+      vi.mocked(mockSystemController.handleRequest).mockResolvedValue(
+        mockResponse,
+      );
+
+      await dispatcher.dispatch(request);
+
+      expect(mockSystemController.handleRequest).toHaveBeenCalledWith(
+        request.request,
+        'req-2',
+      );
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'success',
+          request_id: 'req-2',
+          response: mockResponse,
+        },
+      });
+    });
+
+    it('should route set_model request to system controller', async () => {
+      const request: CLIControlRequest = {
+        type: 'control_request',
+        request_id: 'req-3',
+        request: {
+          subtype: 'set_model',
+          model: 'test-model',
+        } as CLIControlSetModelRequest,
+      };
+
+      const mockResponse = {
+        subtype: 'set_model',
+        model: 'test-model',
+      };
+
+      vi.mocked(mockSystemController.handleRequest).mockResolvedValue(
+        mockResponse,
+      );
+
+      await dispatcher.dispatch(request);
+
+      expect(mockSystemController.handleRequest).toHaveBeenCalledWith(
+        request.request,
+        'req-3',
+      );
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'success',
+          request_id: 'req-3',
+          response: mockResponse,
+        },
+      });
+    });
+
+    it('should route supported_commands request to system controller', async () => {
+      const request: CLIControlRequest = {
+        type: 'control_request',
+        request_id: 'req-4',
+        request: {
+          subtype: 'supported_commands',
+        } as CLIControlSupportedCommandsRequest,
+      };
+
+      const mockResponse = {
+        subtype: 'supported_commands',
+        commands: ['initialize', 'interrupt'],
+      };
+
+      vi.mocked(mockSystemController.handleRequest).mockResolvedValue(
+        mockResponse,
+      );
+
+      await dispatcher.dispatch(request);
+
+      expect(mockSystemController.handleRequest).toHaveBeenCalledWith(
+        request.request,
+        'req-4',
+      );
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'success',
+          request_id: 'req-4',
+          response: mockResponse,
+        },
+      });
+    });
+
+    it('should send error response when controller throws error', async () => {
+      const request: CLIControlRequest = {
+        type: 'control_request',
+        request_id: 'req-5',
+        request: {
+          subtype: 'initialize',
+        } as CLIControlInitializeRequest,
+      };
+
+      const error = new Error('Test error');
+      vi.mocked(mockSystemController.handleRequest).mockRejectedValue(error);
+
+      await dispatcher.dispatch(request);
+
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'error',
+          request_id: 'req-5',
+          error: 'Test error',
+        },
+      });
+    });
+
+    it('should handle non-Error thrown values', async () => {
+      const request: CLIControlRequest = {
+        type: 'control_request',
+        request_id: 'req-6',
+        request: {
+          subtype: 'initialize',
+        } as CLIControlInitializeRequest,
+      };
+
+      vi.mocked(mockSystemController.handleRequest).mockRejectedValue(
+        'String error',
+      );
+
+      await dispatcher.dispatch(request);
+
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'error',
+          request_id: 'req-6',
+          error: 'String error',
+        },
+      });
+    });
+
+    it('should send error response for unknown request subtype', async () => {
+      const request = {
+        type: 'control_request' as const,
+        request_id: 'req-7',
+        request: {
+          subtype: 'unknown_subtype',
+        } as unknown as ControlRequestPayload,
+      };
+
+      await dispatcher.dispatch(request);
+
+      // Dispatch catches errors and sends error response instead of throwing
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'error',
+          request_id: 'req-7',
+          error: 'Unknown control request subtype: unknown_subtype',
+        },
+      });
+    });
+  });
+
+  describe('handleControlResponse', () => {
+    it('should resolve pending outgoing request on success response', () => {
+      const requestId = 'outgoing-req-1';
+      const response: CLIControlResponse = {
+        type: 'control_response',
+        response: {
+          subtype: 'success',
+          request_id: requestId,
+          response: { result: 'success' },
+        },
+      };
+
+      // Register a pending outgoing request
+      const resolve = vi.fn();
+      const reject = vi.fn();
+      const timeoutId = setTimeout(() => {}, 1000);
+
+      // Access private method through type casting
+      (
+        dispatcher as unknown as {
+          registerOutgoingRequest: (
+            id: string,
+            controller: string,
+            resolve: (r: ControlResponse) => void,
+            reject: (e: Error) => void,
+            timeoutId: NodeJS.Timeout,
+          ) => void;
+        }
+      ).registerOutgoingRequest(
+        requestId,
+        'SystemController',
+        resolve,
+        reject,
+        timeoutId,
+      );
+
+      dispatcher.handleControlResponse(response);
+
+      expect(resolve).toHaveBeenCalledWith(response.response);
+      expect(reject).not.toHaveBeenCalled();
+    });
+
+    it('should reject pending outgoing request on error response', () => {
+      const requestId = 'outgoing-req-2';
+      const response: CLIControlResponse = {
+        type: 'control_response',
+        response: {
+          subtype: 'error',
+          request_id: requestId,
+          error: 'Request failed',
+        },
+      };
+
+      const resolve = vi.fn();
+      const reject = vi.fn();
+      const timeoutId = setTimeout(() => {}, 1000);
+
+      (
+        dispatcher as unknown as {
+          registerOutgoingRequest: (
+            id: string,
+            controller: string,
+            resolve: (r: ControlResponse) => void,
+            reject: (e: Error) => void,
+            timeoutId: NodeJS.Timeout,
+          ) => void;
+        }
+      ).registerOutgoingRequest(
+        requestId,
+        'SystemController',
+        resolve,
+        reject,
+        timeoutId,
+      );
+
+      dispatcher.handleControlResponse(response);
+
+      expect(reject).toHaveBeenCalledWith(
+        expect.objectContaining({
+          message: 'Request failed',
+        }),
+      );
+      expect(resolve).not.toHaveBeenCalled();
+    });
+
+    it('should handle error object in error response', () => {
+      const requestId = 'outgoing-req-3';
+      const response: CLIControlResponse = {
+        type: 'control_response',
+        response: {
+          subtype: 'error',
+          request_id: requestId,
+          error: { message: 'Detailed error', code: 500 },
+        },
+      };
+
+      const resolve = vi.fn();
+      const reject = vi.fn();
+      const timeoutId = setTimeout(() => {}, 1000);
+
+      (
+        dispatcher as unknown as {
+          registerOutgoingRequest: (
+            id: string,
+            controller: string,
+            resolve: (r: ControlResponse) => void,
+            reject: (e: Error) => void,
+            timeoutId: NodeJS.Timeout,
+          ) => void;
+        }
+      ).registerOutgoingRequest(
+        requestId,
+        'SystemController',
+        resolve,
+        reject,
+        timeoutId,
+      );
+
+      dispatcher.handleControlResponse(response);
+
+      expect(reject).toHaveBeenCalledWith(
+        expect.objectContaining({
+          message: 'Detailed error',
+        }),
+      );
+    });
+
+    it('should handle response for non-existent pending request gracefully', () => {
+      const response: CLIControlResponse = {
+        type: 'control_response',
+        response: {
+          subtype: 'success',
+          request_id: 'non-existent',
+          response: {},
+        },
+      };
+
+      // Should not throw
+      expect(() => dispatcher.handleControlResponse(response)).not.toThrow();
+    });
+
+    it('should handle response for non-existent request in debug mode', () => {
+      const context = createMockContext(true);
+      const consoleSpy = vi
+        .spyOn(console, 'error')
+        .mockImplementation(() => {});
+
+      const dispatcherWithDebug = new ControlDispatcher(context);
+      const response: CLIControlResponse = {
+        type: 'control_response',
+        response: {
+          subtype: 'success',
+          request_id: 'non-existent',
+          response: {},
+        },
+      };
+
+      dispatcherWithDebug.handleControlResponse(response);
+
+      expect(consoleSpy).toHaveBeenCalledWith(
+        expect.stringContaining(
+          '[ControlDispatcher] No pending outgoing request for: non-existent',
+        ),
+      );
+
+      consoleSpy.mockRestore();
+    });
+  });
+
+  describe('sendControlRequest', () => {
+    it('should delegate to system controller sendControlRequest', async () => {
+      const payload: ControlRequestPayload = {
+        subtype: 'initialize',
+      } as CLIControlInitializeRequest;
+
+      const expectedResponse: ControlResponse = {
+        subtype: 'success',
+        request_id: 'test-id',
+        response: {},
+      };
+
+      vi.mocked(mockSystemController.sendControlRequest).mockResolvedValue(
+        expectedResponse,
+      );
+
+      const result = await dispatcher.sendControlRequest(payload, 5000);
+
+      expect(mockSystemController.sendControlRequest).toHaveBeenCalledWith(
+        payload,
+        5000,
+      );
+      expect(result).toBe(expectedResponse);
+    });
+  });
+
+  describe('handleCancel', () => {
+    it('should cancel specific incoming request', () => {
+      const requestId = 'cancel-req-1';
+      const abortController = new AbortController();
+      const timeoutId = setTimeout(() => {}, 1000);
+
+      const abortSpy = vi.spyOn(abortController, 'abort');
+
+      (
+        dispatcher as unknown as {
+          registerIncomingRequest: (
+            id: string,
+            controller: string,
+            abortController: AbortController,
+            timeoutId: NodeJS.Timeout,
+          ) => void;
+        }
+      ).registerIncomingRequest(
+        requestId,
+        'SystemController',
+        abortController,
+        timeoutId,
+      );
+
+      dispatcher.handleCancel(requestId);
+
+      expect(abortSpy).toHaveBeenCalled();
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'error',
+          request_id: requestId,
+          error: 'Request cancelled',
+        },
+      });
+    });
+
+    it('should cancel all incoming requests when no requestId provided', () => {
+      const requestId1 = 'cancel-req-2';
+      const requestId2 = 'cancel-req-3';
+
+      const abortController1 = new AbortController();
+      const abortController2 = new AbortController();
+      const timeoutId1 = setTimeout(() => {}, 1000);
+      const timeoutId2 = setTimeout(() => {}, 1000);
+
+      const abortSpy1 = vi.spyOn(abortController1, 'abort');
+      const abortSpy2 = vi.spyOn(abortController2, 'abort');
+
+      const register = (
+        dispatcher as unknown as {
+          registerIncomingRequest: (
+            id: string,
+            controller: string,
+            abortController: AbortController,
+            timeoutId: NodeJS.Timeout,
+          ) => void;
+        }
+      ).registerIncomingRequest.bind(dispatcher);
+
+      register(requestId1, 'SystemController', abortController1, timeoutId1);
+      register(requestId2, 'SystemController', abortController2, timeoutId2);
+
+      dispatcher.handleCancel();
+
+      expect(abortSpy1).toHaveBeenCalled();
+      expect(abortSpy2).toHaveBeenCalled();
+      expect(mockContext.streamJson.send).toHaveBeenCalledTimes(2);
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'error',
+          request_id: requestId1,
+          error: 'All requests cancelled',
+        },
+      });
+      expect(mockContext.streamJson.send).toHaveBeenCalledWith({
+        type: 'control_response',
+        response: {
+          subtype: 'error',
+          request_id: requestId2,
+          error: 'All requests cancelled',
+        },
+      });
+    });
+
+    it('should handle cancel of non-existent request gracefully', () => {
+      expect(() => dispatcher.handleCancel('non-existent')).not.toThrow();
+    });
+
+    it('should log cancellation in debug mode', () => {
+      const context = createMockContext(true);
+      const consoleSpy = vi
+        .spyOn(console, 'error')
+        .mockImplementation(() => {});
+
+      const dispatcherWithDebug = new ControlDispatcher(context);
+      const requestId = 'cancel-req-debug';
+      const abortController = new AbortController();
+      const timeoutId = setTimeout(() => {}, 1000);
+
+      (
+        dispatcherWithDebug as unknown as {
+          registerIncomingRequest: (
+            id: string,
+            controller: string,
+            abortController: AbortController,
+            timeoutId: NodeJS.Timeout,
+          ) => void;
+        }
+      ).registerIncomingRequest(
+        requestId,
+        'SystemController',
+        abortController,
+        timeoutId,
+      );
+
+      dispatcherWithDebug.handleCancel(requestId);
+
+      expect(consoleSpy).toHaveBeenCalledWith(
+        expect.stringContaining(
+          '[ControlDispatcher] Cancelled incoming request: cancel-req-debug',
+        ),
+      );
+
+      consoleSpy.mockRestore();
+    });
+  });
+
+  describe('shutdown', () => {
+    it('should cancel all pending incoming requests', () => {
+      const requestId1 = 'shutdown-req-1';
+      const requestId2 = 'shutdown-req-2';
+
+      const abortController1 = new AbortController();
+      const abortController2 = new AbortController();
+      const timeoutId1 = setTimeout(() => {}, 1000);
+      const timeoutId2 = setTimeout(() => {}, 1000);
+
+      const abortSpy1 = vi.spyOn(abortController1, 'abort');
+      const abortSpy2 = vi.spyOn(abortController2, 'abort');
+      const clearTimeoutSpy = vi.spyOn(global, 'clearTimeout');
+
+      const register = (
+        dispatcher as unknown as {
+          registerIncomingRequest: (
+            id: string,
+            controller: string,
+            abortController: AbortController,
+            timeoutId: NodeJS.Timeout,
+          ) => void;
+        }
+      ).registerIncomingRequest.bind(dispatcher);
+
+      register(requestId1, 'SystemController', abortController1, timeoutId1);
+      register(requestId2, 'SystemController', abortController2, timeoutId2);
+
+      dispatcher.shutdown();
+
+      expect(abortSpy1).toHaveBeenCalled();
+      expect(abortSpy2).toHaveBeenCalled();
+      expect(clearTimeoutSpy).toHaveBeenCalledWith(timeoutId1);
+      expect(clearTimeoutSpy).toHaveBeenCalledWith(timeoutId2);
+    });
+
+    it('should reject all pending outgoing requests', () => {
+      const requestId1 = 'outgoing-shutdown-1';
+      const requestId2 = 'outgoing-shutdown-2';
+
+      const reject1 = vi.fn();
+      const reject2 = vi.fn();
+      const timeoutId1 = setTimeout(() => {}, 1000);
+      const timeoutId2 = setTimeout(() => {}, 1000);
+
+      const clearTimeoutSpy = vi.spyOn(global, 'clearTimeout');
+
+      const register = (
+        dispatcher as unknown as {
+          registerOutgoingRequest: (
+            id: string,
+            controller: string,
+            resolve: (r: ControlResponse) => void,
+            reject: (e: Error) => void,
+            timeoutId: NodeJS.Timeout,
+          ) => void;
+        }
+      ).registerOutgoingRequest.bind(dispatcher);
+
+      register(requestId1, 'SystemController', vi.fn(), reject1, timeoutId1);
+      register(requestId2, 'SystemController', vi.fn(), reject2, timeoutId2);
+
+      dispatcher.shutdown();
+
+      expect(reject1).toHaveBeenCalledWith(
+        expect.objectContaining({
+          message: 'Dispatcher shutdown',
+        }),
+      );
+      expect(reject2).toHaveBeenCalledWith(
+        expect.objectContaining({
+          message: 'Dispatcher shutdown',
+        }),
+      );
+      expect(clearTimeoutSpy).toHaveBeenCalledWith(timeoutId1);
+      expect(clearTimeoutSpy).toHaveBeenCalledWith(timeoutId2);
+    });
+
+    it('should cleanup all controllers', () => {
+      vi.mocked(mockSystemController.cleanup).mockImplementation(() => {});
+
+      dispatcher.shutdown();
+
+      expect(mockSystemController.cleanup).toHaveBeenCalled();
+    });
+
+    it('should log shutdown in debug mode', () => {
+      const context = createMockContext(true);
+      const consoleSpy = vi
+        .spyOn(console, 'error')
+        .mockImplementation(() => {});
+
+      const dispatcherWithDebug = new ControlDispatcher(context);
+
+      dispatcherWithDebug.shutdown();
+
+      expect(consoleSpy).toHaveBeenCalledWith(
+        '[ControlDispatcher] Shutting down',
+      );
+
+      consoleSpy.mockRestore();
+    });
+  });
+
+  describe('pending request registry', () => {
+    describe('registerIncomingRequest', () => {
+      it('should register incoming request', () => {
+        const requestId = 'reg-incoming-1';
+        const abortController = new AbortController();
+        const timeoutId = setTimeout(() => {}, 1000);
+
+        (
+          dispatcher as unknown as {
+            registerIncomingRequest: (
+              id: string,
+              controller: string,
+              abortController: AbortController,
+              timeoutId: NodeJS.Timeout,
+            ) => void;
+          }
+        ).registerIncomingRequest(
+          requestId,
+          'SystemController',
+          abortController,
+          timeoutId,
+        );
+
+        // Verify it was registered by trying to cancel it
+        dispatcher.handleCancel(requestId);
+        expect(abortController.signal.aborted).toBe(true);
+      });
+    });
+
+    describe('deregisterIncomingRequest', () => {
+      it('should deregister incoming request', () => {
+        const requestId = 'dereg-incoming-1';
+        const abortController = new AbortController();
+        const timeoutId = setTimeout(() => {}, 1000);
+
+        const clearTimeoutSpy = vi.spyOn(global, 'clearTimeout');
+
+        (
+          dispatcher as unknown as {
+            registerIncomingRequest: (
+              id: string,
+              controller: string,
+              abortController: AbortController,
+              timeoutId: NodeJS.Timeout,
+            ) => void;
+            deregisterIncomingRequest: (id: string) => void;
+          }
+        ).registerIncomingRequest(
+          requestId,
+          'SystemController',
+          abortController,
+          timeoutId,
+        );
+
+        (
+          dispatcher as unknown as {
+            deregisterIncomingRequest: (id: string) => void;
+          }
+        ).deregisterIncomingRequest(requestId);
+
+        // Verify it was deregistered - cancel should not find it
+        const sendMock = vi.mocked(mockContext.streamJson.send);
+        const sendCallCount = sendMock.mock.calls.length;
+        dispatcher.handleCancel(requestId);
+        // Should not send cancel response for non-existent request
+        expect(sendMock.mock.calls.length).toBe(sendCallCount);
+        expect(clearTimeoutSpy).toHaveBeenCalledWith(timeoutId);
+      });
+
+      it('should handle deregister of non-existent request gracefully', () => {
+        expect(() => {
+          (
+            dispatcher as unknown as {
+              deregisterIncomingRequest: (id: string) => void;
+            }
+          ).deregisterIncomingRequest('non-existent');
+        }).not.toThrow();
+      });
+    });
+
+    describe('registerOutgoingRequest', () => {
+      it('should register outgoing request', () => {
+        const requestId = 'reg-outgoing-1';
+        const resolve = vi.fn();
+        const reject = vi.fn();
+        const timeoutId = setTimeout(() => {}, 1000);
+
+        (
+          dispatcher as unknown as {
+            registerOutgoingRequest: (
+              id: string,
+              controller: string,
+              resolve: (r: ControlResponse) => void,
+              reject: (e: Error) => void,
+              timeoutId: NodeJS.Timeout,
+            ) => void;
+          }
+        ).registerOutgoingRequest(
+          requestId,
+          'SystemController',
+          resolve,
+          reject,
+          timeoutId,
+        );
+
+        // Verify it was registered by handling a response
+        const response: CLIControlResponse = {
+          type: 'control_response',
+          response: {
+            subtype: 'success',
+            request_id: requestId,
+            response: {},
+          },
+        };
+
+        dispatcher.handleControlResponse(response);
+        expect(resolve).toHaveBeenCalled();
+      });
+    });
+
+    describe('deregisterOutgoingRequest', () => {
+      it('should deregister outgoing request', () => {
+        const requestId = 'dereg-outgoing-1';
+        const resolve = vi.fn();
+        const reject = vi.fn();
+        const timeoutId = setTimeout(() => {}, 1000);
+
+        const clearTimeoutSpy = vi.spyOn(global, 'clearTimeout');
+
+        (
+          dispatcher as unknown as {
+            registerOutgoingRequest: (
+              id: string,
+              controller: string,
+              resolve: (r: ControlResponse) => void,
+              reject: (e: Error) => void,
+              timeoutId: NodeJS.Timeout,
+            ) => void;
+            deregisterOutgoingRequest: (id: string) => void;
+          }
+        ).registerOutgoingRequest(
+          requestId,
+          'SystemController',
+          resolve,
+          reject,
+          timeoutId,
+        );
+
+        (
+          dispatcher as unknown as {
+            deregisterOutgoingRequest: (id: string) => void;
+          }
+        ).deregisterOutgoingRequest(requestId);
+
+        // Verify it was deregistered - response should not find it
+        const response: CLIControlResponse = {
+          type: 'control_response',
+          response: {
+            subtype: 'success',
+            request_id: requestId,
+            response: {},
+          },
+        };
+
+        dispatcher.handleControlResponse(response);
+        expect(resolve).not.toHaveBeenCalled();
+        expect(clearTimeoutSpy).toHaveBeenCalledWith(timeoutId);
+      });
+
+      it('should handle deregister of non-existent request gracefully', () => {
+        expect(() => {
+          (
+            dispatcher as unknown as {
+              deregisterOutgoingRequest: (id: string) => void;
+            }
+          ).deregisterOutgoingRequest('non-existent');
+        }).not.toThrow();
+      });
+    });
+  });
+});

packages/cli/src/nonInteractive/control/ControlDispatcher.ts

@@ -0,0 +1,353 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Control Dispatcher
+ *
+ * Layer 2 of the control plane architecture. Routes control requests between
+ * SDK and CLI to appropriate controllers, manages pending request registries,
+ * and handles cancellation/cleanup. Application code MUST NOT depend on
+ * controller instances exposed by this class; instead, use ControlService,
+ * which wraps these controllers with a stable programmatic API.
+ *
+ * Controllers:
+ * - SystemController: initialize, interrupt, set_model, supported_commands
+ * - PermissionController: can_use_tool, set_permission_mode
+ * - MCPController: mcp_message, mcp_server_status
+ * - HookController: hook_callback
+ *
+ * Note: Control request types are centrally defined in the ControlRequestType
+ * enum in packages/sdk/typescript/src/types/controlRequests.ts
+ */
+
+import type { IControlContext } from './ControlContext.js';
+import type { IPendingRequestRegistry } from './controllers/baseController.js';
+import { SystemController } from './controllers/systemController.js';
+// import { PermissionController } from './controllers/permissionController.js';
+// import { MCPController } from './controllers/mcpController.js';
+// import { HookController } from './controllers/hookController.js';
+import type {
+  CLIControlRequest,
+  CLIControlResponse,
+  ControlResponse,
+  ControlRequestPayload,
+} from '../types.js';
+
+/**
+ * Tracks an incoming request from SDK awaiting CLI response
+ */
+interface PendingIncomingRequest {
+  controller: string;
+  abortController: AbortController;
+  timeoutId: NodeJS.Timeout;
+}
+
+/**
+ * Tracks an outgoing request from CLI awaiting SDK response
+ */
+interface PendingOutgoingRequest {
+  controller: string;
+  resolve: (response: ControlResponse) => void;
+  reject: (error: Error) => void;
+  timeoutId: NodeJS.Timeout;
+}
+
+/**
+ * Central coordinator for control plane communication.
+ * Routes requests to controllers and manages request lifecycle.
+ */
+export class ControlDispatcher implements IPendingRequestRegistry {
+  private context: IControlContext;
+
+  // Make controllers publicly accessible
+  readonly systemController: SystemController;
+  // readonly permissionController: PermissionController;
+  // readonly mcpController: MCPController;
+  // readonly hookController: HookController;
+
+  // Central pending request registries
+  private pendingIncomingRequests: Map<string, PendingIncomingRequest> =
+    new Map();
+  private pendingOutgoingRequests: Map<string, PendingOutgoingRequest> =
+    new Map();
+
+  constructor(context: IControlContext) {
+    this.context = context;
+
+    // Create domain controllers with context and registry
+    this.systemController = new SystemController(
+      context,
+      this,
+      'SystemController',
+    );
+    // this.permissionController = new PermissionController(
+    //   context,
+    //   this,
+    //   'PermissionController',
+    // );
+    // this.mcpController = new MCPController(context, this, 'MCPController');
+    // this.hookController = new HookController(context, this, 'HookController');
+
+    // Listen for main abort signal
+    this.context.abortSignal.addEventListener('abort', () => {
+      this.shutdown();
+    });
+  }
+
+  /**
+   * Routes an incoming request to the appropriate controller and sends response
+   */
+  async dispatch(request: CLIControlRequest): Promise<void> {
+    const { request_id, request: payload } = request;
+
+    try {
+      // Route to appropriate controller
+      const controller = this.getControllerForRequest(payload.subtype);
+      const response = await controller.handleRequest(payload, request_id);
+
+      // Send success response
+      this.sendSuccessResponse(request_id, response);
+    } catch (error) {
+      // Send error response
+      const errorMessage =
+        error instanceof Error ? error.message : String(error);
+      this.sendErrorResponse(request_id, errorMessage);
+    }
+  }
+
+  /**
+   * Processes response from SDK for an outgoing request
+   */
+  handleControlResponse(response: CLIControlResponse): void {
+    const responsePayload = response.response;
+    const requestId = responsePayload.request_id;
+
+    const pending = this.pendingOutgoingRequests.get(requestId);
+    if (!pending) {
+      // No pending request found - may have timed out or been cancelled
+      if (this.context.debugMode) {
+        console.error(
+          `[ControlDispatcher] No pending outgoing request for: ${requestId}`,
+        );
+      }
+      return;
+    }
+
+    // Deregister
+    this.deregisterOutgoingRequest(requestId);
+
+    // Resolve or reject based on response type
+    if (responsePayload.subtype === 'success') {
+      pending.resolve(responsePayload);
+    } else {
+      const errorMessage =
+        typeof responsePayload.error === 'string'
+          ? responsePayload.error
+          : (responsePayload.error?.message ?? 'Unknown error');
+      pending.reject(new Error(errorMessage));
+    }
+  }
+
+  /**
+   * Sends a control request to SDK and waits for response
+   */
+  async sendControlRequest(
+    payload: ControlRequestPayload,
+    timeoutMs?: number,
+  ): Promise<ControlResponse> {
+    // Delegate to system controller (or any controller, they all have the same method)
+    return this.systemController.sendControlRequest(payload, timeoutMs);
+  }
+
+  /**
+   * Cancels a specific request or all pending requests
+   */
+  handleCancel(requestId?: string): void {
+    if (requestId) {
+      // Cancel specific incoming request
+      const pending = this.pendingIncomingRequests.get(requestId);
+      if (pending) {
+        pending.abortController.abort();
+        this.deregisterIncomingRequest(requestId);
+        this.sendErrorResponse(requestId, 'Request cancelled');
+
+        if (this.context.debugMode) {
+          console.error(
+            `[ControlDispatcher] Cancelled incoming request: ${requestId}`,
+          );
+        }
+      }
+    } else {
+      // Cancel ALL pending incoming requests
+      const requestIds = Array.from(this.pendingIncomingRequests.keys());
+      for (const id of requestIds) {
+        const pending = this.pendingIncomingRequests.get(id);
+        if (pending) {
+          pending.abortController.abort();
+          this.deregisterIncomingRequest(id);
+          this.sendErrorResponse(id, 'All requests cancelled');
+        }
+      }
+
+      if (this.context.debugMode) {
+        console.error(
+          `[ControlDispatcher] Cancelled all ${requestIds.length} pending incoming requests`,
+        );
+      }
+    }
+  }
+
+  /**
+   * Stops all pending requests and cleans up all controllers
+   */
+  shutdown(): void {
+    if (this.context.debugMode) {
+      console.error('[ControlDispatcher] Shutting down');
+    }
+
+    // Cancel all incoming requests
+    for (const [
+      _requestId,
+      pending,
+    ] of this.pendingIncomingRequests.entries()) {
+      pending.abortController.abort();
+      clearTimeout(pending.timeoutId);
+    }
+    this.pendingIncomingRequests.clear();
+
+    // Cancel all outgoing requests
+    for (const [
+      _requestId,
+      pending,
+    ] of this.pendingOutgoingRequests.entries()) {
+      clearTimeout(pending.timeoutId);
+      pending.reject(new Error('Dispatcher shutdown'));
+    }
+    this.pendingOutgoingRequests.clear();
+
+    // Cleanup controllers (MCP controller will close all clients)
+    this.systemController.cleanup();
+    // this.permissionController.cleanup();
+    // this.mcpController.cleanup();
+    // this.hookController.cleanup();
+  }
+
+  /**
+   * Registers an incoming request in the pending registry
+   */
+  registerIncomingRequest(
+    requestId: string,
+    controller: string,
+    abortController: AbortController,
+    timeoutId: NodeJS.Timeout,
+  ): void {
+    this.pendingIncomingRequests.set(requestId, {
+      controller,
+      abortController,
+      timeoutId,
+    });
+  }
+
+  /**
+   * Removes an incoming request from the pending registry
+   */
+  deregisterIncomingRequest(requestId: string): void {
+    const pending = this.pendingIncomingRequests.get(requestId);
+    if (pending) {
+      clearTimeout(pending.timeoutId);
+      this.pendingIncomingRequests.delete(requestId);
+    }
+  }
+
+  /**
+   * Registers an outgoing request in the pending registry
+   */
+  registerOutgoingRequest(
+    requestId: string,
+    controller: string,
+    resolve: (response: ControlResponse) => void,
+    reject: (error: Error) => void,
+    timeoutId: NodeJS.Timeout,
+  ): void {
+    this.pendingOutgoingRequests.set(requestId, {
+      controller,
+      resolve,
+      reject,
+      timeoutId,
+    });
+  }
+
+  /**
+   * Removes an outgoing request from the pending registry
+   */
+  deregisterOutgoingRequest(requestId: string): void {
+    const pending = this.pendingOutgoingRequests.get(requestId);
+    if (pending) {
+      clearTimeout(pending.timeoutId);
+      this.pendingOutgoingRequests.delete(requestId);
+    }
+  }
+
+  /**
+   * Returns the controller that handles the given request subtype
+   */
+  private getControllerForRequest(subtype: string) {
+    switch (subtype) {
+      case 'initialize':
+      case 'interrupt':
+      case 'set_model':
+      case 'supported_commands':
+        return this.systemController;
+
+      // case 'can_use_tool':
+      // case 'set_permission_mode':
+      //   return this.permissionController;
+
+      // case 'mcp_message':
+      // case 'mcp_server_status':
+      //   return this.mcpController;
+
+      // case 'hook_callback':
+      //   return this.hookController;
+
+      default:
+        throw new Error(`Unknown control request subtype: ${subtype}`);
+    }
+  }
+
+  /**
+   * Sends a success response back to SDK
+   */
+  private sendSuccessResponse(
+    requestId: string,
+    response: Record<string, unknown>,
+  ): void {
+    const controlResponse: CLIControlResponse = {
+      type: 'control_response',
+      response: {
+        subtype: 'success',
+        request_id: requestId,
+        response,
+      },
+    };
+    this.context.streamJson.send(controlResponse);
+  }
+
+  /**
+   * Sends an error response back to SDK
+   */
+  private sendErrorResponse(requestId: string, error: string): void {
+    const controlResponse: CLIControlResponse = {
+      type: 'control_response',
+      response: {
+        subtype: 'error',
+        request_id: requestId,
+        error,
+      },
+    };
+    this.context.streamJson.send(controlResponse);
+  }
+}

packages/cli/src/nonInteractive/control/ControlService.ts

@@ -0,0 +1,191 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Control Service - Public Programmatic API
+ *
+ * Provides type-safe access to control plane functionality for internal
+ * CLI code. This is the ONLY programmatic interface that should be used by:
+ * - nonInteractiveCli
+ * - Session managers
+ * - Tool execution handlers
+ * - Internal CLI logic
+ *
+ * DO NOT use ControlDispatcher or controllers directly from application code.
+ *
+ * Architecture:
+ * - ControlContext stores shared session state (Layer 1)
+ * - ControlDispatcher handles protocol-level routing (Layer 2)
+ * - ControlService provides programmatic API for internal CLI usage (Layer 3)
+ *
+ * ControlService and ControlDispatcher share controller instances to ensure
+ * a single source of truth. All higher level code MUST access the control
+ * plane exclusively through ControlService.
+ */
+
+import type { IControlContext } from './ControlContext.js';
+import type { ControlDispatcher } from './ControlDispatcher.js';
+import type {
+  // PermissionServiceAPI,
+  SystemServiceAPI,
+  // McpServiceAPI,
+  // HookServiceAPI,
+} from './types/serviceAPIs.js';
+
+/**
+ * Control Service
+ *
+ * Facade layer providing domain-grouped APIs for control plane operations.
+ * Shares controller instances with ControlDispatcher to ensure single source
+ * of truth and state consistency.
+ */
+export class ControlService {
+  private dispatcher: ControlDispatcher;
+
+  /**
+   * Construct ControlService
+   *
+   * @param context - Control context (unused directly, passed to dispatcher)
+   * @param dispatcher - Control dispatcher that owns the controller instances
+   */
+  constructor(context: IControlContext, dispatcher: ControlDispatcher) {
+    this.dispatcher = dispatcher;
+  }
+
+  /**
+   * Permission Domain API
+   *
+   * Handles tool execution permissions, approval checks, and callbacks.
+   * Delegates to the shared PermissionController instance.
+   */
+  // get permission(): PermissionServiceAPI {
+  //   const controller = this.dispatcher.permissionController;
+  //   return {
+  //     /**
+  //      * Check if a tool should be allowed based on current permission settings
+  //      *
+  //      * Evaluates permission mode and tool registry to determine if execution
+  //      * should proceed. Can optionally modify tool arguments based on confirmation details.
+  //      *
+  //      * @param toolRequest - Tool call request information
+  //      * @param confirmationDetails - Optional confirmation details for UI
+  //      * @returns Permission decision with optional updated arguments
+  //      */
+  //     shouldAllowTool: controller.shouldAllowTool.bind(controller),
+  //
+  //     /**
+  //      * Build UI suggestions for tool confirmation dialogs
+  //      *
+  //      * Creates actionable permission suggestions based on tool confirmation details.
+  //      *
+  //      * @param confirmationDetails - Tool confirmation details
+  //      * @returns Array of permission suggestions or null
+  //      */
+  //     buildPermissionSuggestions:
+  //       controller.buildPermissionSuggestions.bind(controller),
+  //
+  //     /**
+  //      * Get callback for monitoring tool call status updates
+  //      *
+  //      * Returns callback function for integration with CoreToolScheduler.
+  //      *
+  //      * @returns Callback function for tool call updates
+  //      */
+  //     getToolCallUpdateCallback:
+  //       controller.getToolCallUpdateCallback.bind(controller),
+  //   };
+  // }
+
+  /**
+   * System Domain API
+   *
+   * Handles system-level operations and session management.
+   * Delegates to the shared SystemController instance.
+   */
+  get system(): SystemServiceAPI {
+    const controller = this.dispatcher.systemController;
+    return {
+      /**
+       * Get control capabilities
+       *
+       * Returns the control capabilities object indicating what control
+       * features are available. Used exclusively for the initialize
+       * control response. System messages do not include capabilities.
+       *
+       * @returns Control capabilities object
+       */
+      getControlCapabilities: () => controller.buildControlCapabilities(),
+    };
+  }
+
+  /**
+   * MCP Domain API
+   *
+   * Handles Model Context Protocol server interactions.
+   * Delegates to the shared MCPController instance.
+   */
+  // get mcp(): McpServiceAPI {
+  //   return {
+  //     /**
+  //      * Get or create MCP client for a server (lazy initialization)
+  //      *
+  //      * Returns existing client or creates new connection.
+  //      *
+  //      * @param serverName - Name of the MCP server
+  //      * @returns Promise with client and config
+  //      */
+  //     getMcpClient: async (serverName: string) => {
+  //       // MCPController has a private method getOrCreateMcpClient
+  //       // We need to expose it via the API
+  //       // For now, throw error as placeholder
+  //       // The actual implementation will be added when we update MCPController
+  //       throw new Error(
+  //         `getMcpClient not yet implemented in ControlService. Server: ${serverName}`,
+  //       );
+  //     },
+  //
+  //     /**
+  //      * List all available MCP servers
+  //      *
+  //      * Returns names of configured/connected MCP servers.
+  //      *
+  //      * @returns Array of server names
+  //      */
+  //     listServers: () => {
+  //       // Get servers from context
+  //       const sdkServers = Array.from(
+  //         this.dispatcher.mcpController['context'].sdkMcpServers,
+  //       );
+  //       const cliServers = Array.from(
+  //         this.dispatcher.mcpController['context'].mcpClients.keys(),
+  //       );
+  //       return [...new Set([...sdkServers, ...cliServers])];
+  //     },
+  //   };
+  // }
+
+  /**
+   * Hook Domain API
+   *
+   * Handles hook callback processing (placeholder for future expansion).
+   * Delegates to the shared HookController instance.
+   */
+  // get hook(): HookServiceAPI {
+  //   // HookController has no public methods yet - controller access reserved for future use
+  //   return {};
+  // }
+
+  /**
+   * Cleanup all controllers
+   *
+   * Should be called on session shutdown. Delegates to dispatcher's shutdown
+   * method to ensure all controllers are properly cleaned up.
+   */
+  cleanup(): void {
+    // Delegate to dispatcher which manages controller cleanup
+    this.dispatcher.shutdown();
+  }
+}

packages/cli/src/nonInteractive/control/controllers/baseController.ts

@@ -0,0 +1,180 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Base Controller
+ *
+ * Abstract base class for domain-specific control plane controllers.
+ * Provides common functionality for:
+ * - Handling incoming control requests (SDK -> CLI)
+ * - Sending outgoing control requests (CLI -> SDK)
+ * - Request lifecycle management with timeout and cancellation
+ * - Integration with central pending request registry
+ */
+
+import { randomUUID } from 'node:crypto';
+import type { IControlContext } from '../ControlContext.js';
+import type {
+  ControlRequestPayload,
+  ControlResponse,
+  CLIControlRequest,
+} from '../../types.js';
+
+const DEFAULT_REQUEST_TIMEOUT_MS = 30000; // 30 seconds
+
+/**
+ * Registry interface for controllers to register/deregister pending requests
+ */
+export interface IPendingRequestRegistry {
+  registerIncomingRequest(
+    requestId: string,
+    controller: string,
+    abortController: AbortController,
+    timeoutId: NodeJS.Timeout,
+  ): void;
+  deregisterIncomingRequest(requestId: string): void;
+
+  registerOutgoingRequest(
+    requestId: string,
+    controller: string,
+    resolve: (response: ControlResponse) => void,
+    reject: (error: Error) => void,
+    timeoutId: NodeJS.Timeout,
+  ): void;
+  deregisterOutgoingRequest(requestId: string): void;
+}
+
+/**
+ * Abstract base controller class
+ *
+ * Subclasses should implement handleRequestPayload() to process specific
+ * control request types.
+ */
+export abstract class BaseController {
+  protected context: IControlContext;
+  protected registry: IPendingRequestRegistry;
+  protected controllerName: string;
+
+  constructor(
+    context: IControlContext,
+    registry: IPendingRequestRegistry,
+    controllerName: string,
+  ) {
+    this.context = context;
+    this.registry = registry;
+    this.controllerName = controllerName;
+  }
+
+  /**
+   * Handle an incoming control request
+   *
+   * Manages lifecycle: register -> process -> deregister
+   */
+  async handleRequest(
+    payload: ControlRequestPayload,
+    requestId: string,
+  ): Promise<Record<string, unknown>> {
+    const requestAbortController = new AbortController();
+
+    // Setup timeout
+    const timeoutId = setTimeout(() => {
+      requestAbortController.abort();
+      this.registry.deregisterIncomingRequest(requestId);
+      if (this.context.debugMode) {
+        console.error(`[${this.controllerName}] Request timeout: ${requestId}`);
+      }
+    }, DEFAULT_REQUEST_TIMEOUT_MS);
+
+    // Register with central registry
+    this.registry.registerIncomingRequest(
+      requestId,
+      this.controllerName,
+      requestAbortController,
+      timeoutId,
+    );
+
+    try {
+      const response = await this.handleRequestPayload(
+        payload,
+        requestAbortController.signal,
+      );
+
+      // Success - deregister
+      this.registry.deregisterIncomingRequest(requestId);
+
+      return response;
+    } catch (error) {
+      // Error - deregister
+      this.registry.deregisterIncomingRequest(requestId);
+      throw error;
+    }
+  }
+
+  /**
+   * Send an outgoing control request to SDK
+   *
+   * Manages lifecycle: register -> send -> wait for response -> deregister
+   */
+  async sendControlRequest(
+    payload: ControlRequestPayload,
+    timeoutMs: number = DEFAULT_REQUEST_TIMEOUT_MS,
+  ): Promise<ControlResponse> {
+    const requestId = randomUUID();
+
+    return new Promise<ControlResponse>((resolve, reject) => {
+      // Setup timeout
+      const timeoutId = setTimeout(() => {
+        this.registry.deregisterOutgoingRequest(requestId);
+        reject(new Error('Control request timeout'));
+        if (this.context.debugMode) {
+          console.error(
+            `[${this.controllerName}] Outgoing request timeout: ${requestId}`,
+          );
+        }
+      }, timeoutMs);
+
+      // Register with central registry
+      this.registry.registerOutgoingRequest(
+        requestId,
+        this.controllerName,
+        resolve,
+        reject,
+        timeoutId,
+      );
+
+      // Send control request
+      const request: CLIControlRequest = {
+        type: 'control_request',
+        request_id: requestId,
+        request: payload,
+      };
+
+      try {
+        this.context.streamJson.send(request);
+      } catch (error) {
+        this.registry.deregisterOutgoingRequest(requestId);
+        reject(error);
+      }
+    });
+  }
+
+  /**
+   * Abstract method: Handle specific request payload
+   *
+   * Subclasses must implement this to process their domain-specific requests.
+   */
+  protected abstract handleRequestPayload(
+    payload: ControlRequestPayload,
+    signal: AbortSignal,
+  ): Promise<Record<string, unknown>>;
+
+  /**
+   * Cleanup resources
+   */
+  cleanup(): void {
+    // Subclasses can override to add cleanup logic
+  }
+}

packages/cli/src/nonInteractive/control/controllers/hookController.ts

@@ -0,0 +1,56 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Hook Controller
+ *
+ * Handles hook-related control requests:
+ * - hook_callback: Process hook callbacks (placeholder for future)
+ */
+
+import { BaseController } from './baseController.js';
+import type {
+  ControlRequestPayload,
+  CLIHookCallbackRequest,
+} from '../../types.js';
+
+export class HookController extends BaseController {
+  /**
+   * Handle hook control requests
+   */
+  protected async handleRequestPayload(
+    payload: ControlRequestPayload,
+    _signal: AbortSignal,
+  ): Promise<Record<string, unknown>> {
+    switch (payload.subtype) {
+      case 'hook_callback':
+        return this.handleHookCallback(payload as CLIHookCallbackRequest);
+
+      default:
+        throw new Error(`Unsupported request subtype in HookController`);
+    }
+  }
+
+  /**
+   * Handle hook_callback request
+   *
+   * Processes hook callbacks (placeholder implementation)
+   */
+  private async handleHookCallback(
+    payload: CLIHookCallbackRequest,
+  ): Promise<Record<string, unknown>> {
+    if (this.context.debugMode) {
+      console.error(`[HookController] Hook callback: ${payload.callback_id}`);
+    }
+
+    // Hook callback processing not yet implemented
+    return {
+      result: 'Hook callback processing not yet implemented',
+      callback_id: payload.callback_id,
+      tool_use_id: payload.tool_use_id,
+    };
+  }
+}

packages/cli/src/nonInteractive/control/controllers/mcpController.ts

@@ -0,0 +1,287 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * MCP Controller
+ *
+ * Handles MCP-related control requests:
+ * - mcp_message: Route MCP messages
+ * - mcp_server_status: Return MCP server status
+ */
+
+import { BaseController } from './baseController.js';
+import type { Client } from '@modelcontextprotocol/sdk/client/index.js';
+import { ResultSchema } from '@modelcontextprotocol/sdk/types.js';
+import type {
+  ControlRequestPayload,
+  CLIControlMcpMessageRequest,
+} from '../../types.js';
+import type {
+  MCPServerConfig,
+  WorkspaceContext,
+} from '@qwen-code/qwen-code-core';
+import {
+  connectToMcpServer,
+  MCP_DEFAULT_TIMEOUT_MSEC,
+} from '@qwen-code/qwen-code-core';
+
+export class MCPController extends BaseController {
+  /**
+   * Handle MCP control requests
+   */
+  protected async handleRequestPayload(
+    payload: ControlRequestPayload,
+    _signal: AbortSignal,
+  ): Promise<Record<string, unknown>> {
+    switch (payload.subtype) {
+      case 'mcp_message':
+        return this.handleMcpMessage(payload as CLIControlMcpMessageRequest);
+
+      case 'mcp_server_status':
+        return this.handleMcpStatus();
+
+      default:
+        throw new Error(`Unsupported request subtype in MCPController`);
+    }
+  }
+
+  /**
+   * Handle mcp_message request
+   *
+   * Routes JSON-RPC messages to MCP servers
+   */
+  private async handleMcpMessage(
+    payload: CLIControlMcpMessageRequest,
+  ): Promise<Record<string, unknown>> {
+    const serverNameRaw = payload.server_name;
+    if (
+      typeof serverNameRaw !== 'string' ||
+      serverNameRaw.trim().length === 0
+    ) {
+      throw new Error('Missing server_name in mcp_message request');
+    }
+
+    const message = payload.message;
+    if (!message || typeof message !== 'object') {
+      throw new Error(
+        'Missing or invalid message payload for mcp_message request',
+      );
+    }
+
+    // Get or create MCP client
+    let clientEntry: { client: Client; config: MCPServerConfig };
+    try {
+      clientEntry = await this.getOrCreateMcpClient(serverNameRaw.trim());
+    } catch (error) {
+      throw new Error(
+        error instanceof Error
+          ? error.message
+          : 'Failed to connect to MCP server',
+      );
+    }
+
+    const method = message.method;
+    if (typeof method !== 'string' || method.trim().length === 0) {
+      throw new Error('Invalid MCP message: missing method');
+    }
+
+    const jsonrpcVersion =
+      typeof message.jsonrpc === 'string' ? message.jsonrpc : '2.0';
+    const messageId = message.id;
+    const params = message.params;
+    const timeout =
+      typeof clientEntry.config.timeout === 'number'
+        ? clientEntry.config.timeout
+        : MCP_DEFAULT_TIMEOUT_MSEC;
+
+    try {
+      // Handle notification (no id)
+      if (messageId === undefined) {
+        await clientEntry.client.notification({
+          method,
+          params,
+        });
+        return {
+          subtype: 'mcp_message',
+          mcp_response: {
+            jsonrpc: jsonrpcVersion,
+            id: null,
+            result: { success: true, acknowledged: true },
+          },
+        };
+      }
+
+      // Handle request (with id)
+      const result = await clientEntry.client.request(
+        {
+          method,
+          params,
+        },
+        ResultSchema,
+        { timeout },
+      );
+
+      return {
+        subtype: 'mcp_message',
+        mcp_response: {
+          jsonrpc: jsonrpcVersion,
+          id: messageId,
+          result,
+        },
+      };
+    } catch (error) {
+      // If connection closed, remove from cache
+      if (error instanceof Error && /closed/i.test(error.message)) {
+        this.context.mcpClients.delete(serverNameRaw.trim());
+      }
+
+      const errorCode =
+        typeof (error as { code?: unknown })?.code === 'number'
+          ? ((error as { code: number }).code as number)
+          : -32603;
+      const errorMessage =
+        error instanceof Error
+          ? error.message
+          : 'Failed to execute MCP request';
+      const errorData = (error as { data?: unknown })?.data;
+
+      const errorBody: Record<string, unknown> = {
+        code: errorCode,
+        message: errorMessage,
+      };
+      if (errorData !== undefined) {
+        errorBody['data'] = errorData;
+      }
+
+      return {
+        subtype: 'mcp_message',
+        mcp_response: {
+          jsonrpc: jsonrpcVersion,
+          id: messageId ?? null,
+          error: errorBody,
+        },
+      };
+    }
+  }
+
+  /**
+   * Handle mcp_server_status request
+   *
+   * Returns status of registered MCP servers
+   */
+  private async handleMcpStatus(): Promise<Record<string, unknown>> {
+    const status: Record<string, string> = {};
+
+    // Include SDK MCP servers
+    for (const serverName of this.context.sdkMcpServers) {
+      status[serverName] = 'connected';
+    }
+
+    // Include CLI-managed MCP clients
+    for (const serverName of this.context.mcpClients.keys()) {
+      status[serverName] = 'connected';
+    }
+
+    if (this.context.debugMode) {
+      console.error(
+        `[MCPController] MCP status: ${Object.keys(status).length} servers`,
+      );
+    }
+
+    return status;
+  }
+
+  /**
+   * Get or create MCP client for a server
+   *
+   * Implements lazy connection and caching
+   */
+  private async getOrCreateMcpClient(
+    serverName: string,
+  ): Promise<{ client: Client; config: MCPServerConfig }> {
+    // Check cache first
+    const cached = this.context.mcpClients.get(serverName);
+    if (cached) {
+      return cached;
+    }
+
+    // Get server configuration
+    const provider = this.context.config as unknown as {
+      getMcpServers?: () => Record<string, MCPServerConfig> | undefined;
+      getDebugMode?: () => boolean;
+      getWorkspaceContext?: () => unknown;
+    };
+
+    if (typeof provider.getMcpServers !== 'function') {
+      throw new Error(`MCP server "${serverName}" is not configured`);
+    }
+
+    const servers = provider.getMcpServers() ?? {};
+    const serverConfig = servers[serverName];
+    if (!serverConfig) {
+      throw new Error(`MCP server "${serverName}" is not configured`);
+    }
+
+    const debugMode =
+      typeof provider.getDebugMode === 'function'
+        ? provider.getDebugMode()
+        : false;
+
+    const workspaceContext =
+      typeof provider.getWorkspaceContext === 'function'
+        ? provider.getWorkspaceContext()
+        : undefined;
+
+    if (!workspaceContext) {
+      throw new Error('Workspace context is not available for MCP connection');
+    }
+
+    // Connect to MCP server
+    const client = await connectToMcpServer(
+      serverName,
+      serverConfig,
+      debugMode,
+      workspaceContext as WorkspaceContext,
+    );
+
+    // Cache the client
+    const entry = { client, config: serverConfig };
+    this.context.mcpClients.set(serverName, entry);
+
+    if (this.context.debugMode) {
+      console.error(`[MCPController] Connected to MCP server: ${serverName}`);
+    }
+
+    return entry;
+  }
+
+  /**
+   * Cleanup MCP clients
+   */
+  override cleanup(): void {
+    if (this.context.debugMode) {
+      console.error(
+        `[MCPController] Cleaning up ${this.context.mcpClients.size} MCP clients`,
+      );
+    }
+
+    // Close all MCP clients
+    for (const [serverName, { client }] of this.context.mcpClients.entries()) {
+      try {
+        client.close();
+      } catch (error) {
+        if (this.context.debugMode) {
+          console.error(
+            `[MCPController] Failed to close MCP client ${serverName}:`,
+            error,
+          );
+        }
+      }
+    }
+
+    this.context.mcpClients.clear();
+  }
+}

packages/cli/src/nonInteractive/control/controllers/permissionController.ts

@@ -0,0 +1,483 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Permission Controller
+ *
+ * Handles permission-related control requests:
+ * - can_use_tool: Check if tool usage is allowed
+ * - set_permission_mode: Change permission mode at runtime
+ *
+ * Abstracts all permission logic from the session manager to keep it clean.
+ */
+
+import type {
+  ToolCallRequestInfo,
+  WaitingToolCall,
+} from '@qwen-code/qwen-code-core';
+import {
+  InputFormat,
+  ToolConfirmationOutcome,
+} from '@qwen-code/qwen-code-core';
+import type {
+  CLIControlPermissionRequest,
+  CLIControlSetPermissionModeRequest,
+  ControlRequestPayload,
+  PermissionMode,
+  PermissionSuggestion,
+} from '../../types.js';
+import { BaseController } from './baseController.js';
+
+// Import ToolCallConfirmationDetails types for type alignment
+type ToolConfirmationType = 'edit' | 'exec' | 'mcp' | 'info' | 'plan';
+
+export class PermissionController extends BaseController {
+  private pendingOutgoingRequests = new Set<string>();
+
+  /**
+   * Handle permission control requests
+   */
+  protected async handleRequestPayload(
+    payload: ControlRequestPayload,
+    _signal: AbortSignal,
+  ): Promise<Record<string, unknown>> {
+    switch (payload.subtype) {
+      case 'can_use_tool':
+        return this.handleCanUseTool(payload as CLIControlPermissionRequest);
+
+      case 'set_permission_mode':
+        return this.handleSetPermissionMode(
+          payload as CLIControlSetPermissionModeRequest,
+        );
+
+      default:
+        throw new Error(`Unsupported request subtype in PermissionController`);
+    }
+  }
+
+  /**
+   * Handle can_use_tool request
+   *
+   * Comprehensive permission evaluation based on:
+   * - Permission mode (approval level)
+   * - Tool registry validation
+   * - Error handling with safe defaults
+   */
+  private async handleCanUseTool(
+    payload: CLIControlPermissionRequest,
+  ): Promise<Record<string, unknown>> {
+    const toolName = payload.tool_name;
+    if (
+      !toolName ||
+      typeof toolName !== 'string' ||
+      toolName.trim().length === 0
+    ) {
+      return {
+        subtype: 'can_use_tool',
+        behavior: 'deny',
+        message: 'Missing or invalid tool_name in can_use_tool request',
+      };
+    }
+
+    let behavior: 'allow' | 'deny' = 'allow';
+    let message: string | undefined;
+
+    try {
+      // Check permission mode first
+      const permissionResult = this.checkPermissionMode();
+      if (!permissionResult.allowed) {
+        behavior = 'deny';
+        message = permissionResult.message;
+      }
+
+      // Check tool registry if permission mode allows
+      if (behavior === 'allow') {
+        const registryResult = this.checkToolRegistry(toolName);
+        if (!registryResult.allowed) {
+          behavior = 'deny';
+          message = registryResult.message;
+        }
+      }
+    } catch (error) {
+      behavior = 'deny';
+      message =
+        error instanceof Error
+          ? `Failed to evaluate tool permission: ${error.message}`
+          : 'Failed to evaluate tool permission';
+    }
+
+    const response: Record<string, unknown> = {
+      subtype: 'can_use_tool',
+      behavior,
+    };
+
+    if (message) {
+      response['message'] = message;
+    }
+
+    return response;
+  }
+
+  /**
+   * Check permission mode for tool execution
+   */
+  private checkPermissionMode(): { allowed: boolean; message?: string } {
+    const mode = this.context.permissionMode;
+
+    // Map permission modes to approval logic (aligned with VALID_APPROVAL_MODE_VALUES)
+    switch (mode) {
+      case 'yolo': // Allow all tools
+      case 'auto-edit': // Auto-approve edit operations
+      case 'plan': // Auto-approve planning operations
+        return { allowed: true };
+
+      case 'default': // TODO: allow all tools for test
+      default:
+        return {
+          allowed: false,
+          message:
+            'Tool execution requires manual approval. Update permission mode or approve via host.',
+        };
+    }
+  }
+
+  /**
+   * Check if tool exists in registry
+   */
+  private checkToolRegistry(toolName: string): {
+    allowed: boolean;
+    message?: string;
+  } {
+    try {
+      // Access tool registry through config
+      const config = this.context.config;
+      const registryProvider = config as unknown as {
+        getToolRegistry?: () => {
+          getTool?: (name: string) => unknown;
+        };
+      };
+
+      if (typeof registryProvider.getToolRegistry === 'function') {
+        const registry = registryProvider.getToolRegistry();
+        if (
+          registry &&
+          typeof registry.getTool === 'function' &&
+          !registry.getTool(toolName)
+        ) {
+          return {
+            allowed: false,
+            message: `Tool "${toolName}" is not registered.`,
+          };
+        }
+      }
+
+      return { allowed: true };
+    } catch (error) {
+      return {
+        allowed: false,
+        message: `Failed to check tool registry: ${error instanceof Error ? error.message : 'Unknown error'}`,
+      };
+    }
+  }
+
+  /**
+   * Handle set_permission_mode request
+   *
+   * Updates the permission mode in the context
+   */
+  private async handleSetPermissionMode(
+    payload: CLIControlSetPermissionModeRequest,
+  ): Promise<Record<string, unknown>> {
+    const mode = payload.mode;
+    const validModes: PermissionMode[] = [
+      'default',
+      'plan',
+      'auto-edit',
+      'yolo',
+    ];
+
+    if (!validModes.includes(mode)) {
+      throw new Error(
+        `Invalid permission mode: ${mode}. Valid values are: ${validModes.join(', ')}`,
+      );
+    }
+
+    this.context.permissionMode = mode;
+
+    if (this.context.debugMode) {
+      console.error(
+        `[PermissionController] Permission mode updated to: ${mode}`,
+      );
+    }
+
+    return { status: 'updated', mode };
+  }
+
+  /**
+   * Build permission suggestions for tool confirmation UI
+   *
+   * This method creates UI suggestions based on tool confirmation details,
+   * helping the host application present appropriate permission options.
+   */
+  buildPermissionSuggestions(
+    confirmationDetails: unknown,
+  ): PermissionSuggestion[] | null {
+    if (
+      !confirmationDetails ||
+      typeof confirmationDetails !== 'object' ||
+      !('type' in confirmationDetails)
+    ) {
+      return null;
+    }
+
+    const details = confirmationDetails as Record<string, unknown>;
+    const type = String(details['type'] ?? '');
+    const title =
+      typeof details['title'] === 'string' ? details['title'] : undefined;
+
+    // Ensure type matches ToolCallConfirmationDetails union
+    const confirmationType = type as ToolConfirmationType;
+
+    switch (confirmationType) {
+      case 'exec': // ToolExecuteConfirmationDetails
+        return [
+          {
+            type: 'allow',
+            label: 'Allow Command',
+            description: `Execute: ${details['command']}`,
+          },
+          {
+            type: 'deny',
+            label: 'Deny',
+            description: 'Block this command execution',
+          },
+        ];
+
+      case 'edit': // ToolEditConfirmationDetails
+        return [
+          {
+            type: 'allow',
+            label: 'Allow Edit',
+            description: `Edit file: ${details['fileName']}`,
+          },
+          {
+            type: 'deny',
+            label: 'Deny',
+            description: 'Block this file edit',
+          },
+          {
+            type: 'modify',
+            label: 'Review Changes',
+            description: 'Review the proposed changes before applying',
+          },
+        ];
+
+      case 'plan': // ToolPlanConfirmationDetails
+        return [
+          {
+            type: 'allow',
+            label: 'Approve Plan',
+            description: title || 'Execute the proposed plan',
+          },
+          {
+            type: 'deny',
+            label: 'Reject Plan',
+            description: 'Do not execute this plan',
+          },
+        ];
+
+      case 'mcp': // ToolMcpConfirmationDetails
+        return [
+          {
+            type: 'allow',
+            label: 'Allow MCP Call',
+            description: `${details['serverName']}: ${details['toolName']}`,
+          },
+          {
+            type: 'deny',
+            label: 'Deny',
+            description: 'Block this MCP server call',
+          },
+        ];
+
+      case 'info': // ToolInfoConfirmationDetails
+        return [
+          {
+            type: 'allow',
+            label: 'Allow Info Request',
+            description: title || 'Allow information request',
+          },
+          {
+            type: 'deny',
+            label: 'Deny',
+            description: 'Block this information request',
+          },
+        ];
+
+      default:
+        // Fallback for unknown types
+        return [
+          {
+            type: 'allow',
+            label: 'Allow',
+            description: title || `Allow ${type} operation`,
+          },
+          {
+            type: 'deny',
+            label: 'Deny',
+            description: `Block ${type} operation`,
+          },
+        ];
+    }
+  }
+
+  /**
+   * Check if a tool should be executed based on current permission settings
+   *
+   * This is a convenience method for direct tool execution checks without
+   * going through the control request flow.
+   */
+  async shouldAllowTool(
+    toolRequest: ToolCallRequestInfo,
+    confirmationDetails?: unknown,
+  ): Promise<{
+    allowed: boolean;
+    message?: string;
+    updatedArgs?: Record<string, unknown>;
+  }> {
+    // Check permission mode
+    const modeResult = this.checkPermissionMode();
+    if (!modeResult.allowed) {
+      return {
+        allowed: false,
+        message: modeResult.message,
+      };
+    }
+
+    // Check tool registry
+    const registryResult = this.checkToolRegistry(toolRequest.name);
+    if (!registryResult.allowed) {
+      return {
+        allowed: false,
+        message: registryResult.message,
+      };
+    }
+
+    // If we have confirmation details, we could potentially modify args
+    // This is a hook for future enhancement
+    if (confirmationDetails) {
+      // Future: handle argument modifications based on confirmation details
+    }
+
+    return { allowed: true };
+  }
+
+  /**
+   * Get callback for monitoring tool calls and handling outgoing permission requests
+   * This is passed to executeToolCall to hook into CoreToolScheduler updates
+   */
+  getToolCallUpdateCallback(): (toolCalls: unknown[]) => void {
+    return (toolCalls: unknown[]) => {
+      for (const call of toolCalls) {
+        if (
+          call &&
+          typeof call === 'object' &&
+          (call as { status?: string }).status === 'awaiting_approval'
+        ) {
+          const awaiting = call as WaitingToolCall;
+          if (
+            typeof awaiting.confirmationDetails?.onConfirm === 'function' &&
+            !this.pendingOutgoingRequests.has(awaiting.request.callId)
+          ) {
+            this.pendingOutgoingRequests.add(awaiting.request.callId);
+            void this.handleOutgoingPermissionRequest(awaiting);
+          }
+        }
+      }
+    };
+  }
+
+  /**
+   * Handle outgoing permission request
+   *
+   * Behavior depends on input format:
+   * - stream-json mode: Send can_use_tool to SDK and await response
+   * - Other modes: Check local approval mode and decide immediately
+   */
+  private async handleOutgoingPermissionRequest(
+    toolCall: WaitingToolCall,
+  ): Promise<void> {
+    try {
+      const inputFormat = this.context.config.getInputFormat?.();
+      const isStreamJsonMode = inputFormat === InputFormat.STREAM_JSON;
+
+      if (!isStreamJsonMode) {
+        // No SDK available - use local permission check
+        const modeCheck = this.checkPermissionMode();
+        const outcome = modeCheck.allowed
+          ? ToolConfirmationOutcome.ProceedOnce
+          : ToolConfirmationOutcome.Cancel;
+
+        await toolCall.confirmationDetails.onConfirm(outcome);
+        return;
+      }
+
+      // Stream-json mode: ask SDK for permission
+      const permissionSuggestions = this.buildPermissionSuggestions(
+        toolCall.confirmationDetails,
+      );
+
+      const response = await this.sendControlRequest(
+        {
+          subtype: 'can_use_tool',
+          tool_name: toolCall.request.name,
+          tool_use_id: toolCall.request.callId,
+          input: toolCall.request.args,
+          permission_suggestions: permissionSuggestions,
+          blocked_path: null,
+        } as CLIControlPermissionRequest,
+        30000,
+      );
+
+      if (response.subtype !== 'success') {
+        await toolCall.confirmationDetails.onConfirm(
+          ToolConfirmationOutcome.Cancel,
+        );
+        return;
+      }
+
+      const payload = (response.response || {}) as Record<string, unknown>;
+      const behavior = String(payload['behavior'] || '').toLowerCase();
+
+      if (behavior === 'allow') {
+        // Handle updated input if provided
+        const updatedInput = payload['updatedInput'];
+        if (updatedInput && typeof updatedInput === 'object') {
+          toolCall.request.args = updatedInput as Record<string, unknown>;
+        }
+        await toolCall.confirmationDetails.onConfirm(
+          ToolConfirmationOutcome.ProceedOnce,
+        );
+      } else {
+        await toolCall.confirmationDetails.onConfirm(
+          ToolConfirmationOutcome.Cancel,
+        );
+      }
+    } catch (error) {
+      if (this.context.debugMode) {
+        console.error(
+          '[PermissionController] Outgoing permission failed:',
+          error,
+        );
+      }
+      await toolCall.confirmationDetails.onConfirm(
+        ToolConfirmationOutcome.Cancel,
+      );
+    } finally {
+      this.pendingOutgoingRequests.delete(toolCall.request.callId);
+    }
+  }
+}

packages/cli/src/nonInteractive/control/controllers/systemController.ts

@@ -0,0 +1,215 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * System Controller
+ *
+ * Handles system-level control requests:
+ * - initialize: Setup session and return system info
+ * - interrupt: Cancel current operations
+ * - set_model: Switch model (placeholder)
+ */
+
+import { BaseController } from './baseController.js';
+import type {
+  ControlRequestPayload,
+  CLIControlInitializeRequest,
+  CLIControlSetModelRequest,
+} from '../../types.js';
+
+export class SystemController extends BaseController {
+  /**
+   * Handle system control requests
+   */
+  protected async handleRequestPayload(
+    payload: ControlRequestPayload,
+    _signal: AbortSignal,
+  ): Promise<Record<string, unknown>> {
+    switch (payload.subtype) {
+      case 'initialize':
+        return this.handleInitialize(payload as CLIControlInitializeRequest);
+
+      case 'interrupt':
+        return this.handleInterrupt();
+
+      case 'set_model':
+        return this.handleSetModel(payload as CLIControlSetModelRequest);
+
+      case 'supported_commands':
+        return this.handleSupportedCommands();
+
+      default:
+        throw new Error(`Unsupported request subtype in SystemController`);
+    }
+  }
+
+  /**
+   * Handle initialize request
+   *
+   * Registers SDK MCP servers and returns capabilities
+   */
+  private async handleInitialize(
+    payload: CLIControlInitializeRequest,
+  ): Promise<Record<string, unknown>> {
+    // Register SDK MCP servers if provided
+    if (payload.sdkMcpServers && Array.isArray(payload.sdkMcpServers)) {
+      for (const serverName of payload.sdkMcpServers) {
+        this.context.sdkMcpServers.add(serverName);
+      }
+    }
+
+    // Build capabilities for response
+    const capabilities = this.buildControlCapabilities();
+
+    if (this.context.debugMode) {
+      console.error(
+        `[SystemController] Initialized with ${this.context.sdkMcpServers.size} SDK MCP servers`,
+      );
+    }
+
+    return {
+      subtype: 'initialize',
+      capabilities,
+    };
+  }
+
+  /**
+   * Build control capabilities for initialize control response
+   *
+   * This method constructs the control capabilities object that indicates
+   * what control features are available. It is used exclusively in the
+   * initialize control response.
+   */
+  buildControlCapabilities(): Record<string, unknown> {
+    const capabilities: Record<string, unknown> = {
+      can_handle_can_use_tool: true,
+      can_handle_hook_callback: true,
+      can_set_permission_mode:
+        typeof this.context.config.setApprovalMode === 'function',
+      can_set_model: typeof this.context.config.setModel === 'function',
+    };
+
+    // Check if MCP message handling is available
+    try {
+      const mcpProvider = this.context.config as unknown as {
+        getMcpServers?: () => Record<string, unknown> | undefined;
+      };
+      if (typeof mcpProvider.getMcpServers === 'function') {
+        const servers = mcpProvider.getMcpServers();
+        capabilities['can_handle_mcp_message'] = Boolean(
+          servers && Object.keys(servers).length > 0,
+        );
+      } else {
+        capabilities['can_handle_mcp_message'] = false;
+      }
+    } catch (error) {
+      if (this.context.debugMode) {
+        console.error(
+          '[SystemController] Failed to determine MCP capability:',
+          error,
+        );
+      }
+      capabilities['can_handle_mcp_message'] = false;
+    }
+
+    return capabilities;
+  }
+
+  /**
+   * Handle interrupt request
+   *
+   * Triggers the interrupt callback to cancel current operations
+   */
+  private async handleInterrupt(): Promise<Record<string, unknown>> {
+    // Trigger interrupt callback if available
+    if (this.context.onInterrupt) {
+      this.context.onInterrupt();
+    }
+
+    // Abort the main signal to cancel ongoing operations
+    if (this.context.abortSignal && !this.context.abortSignal.aborted) {
+      // Note: We can't directly abort the signal, but the onInterrupt callback should handle this
+      if (this.context.debugMode) {
+        console.error('[SystemController] Interrupt signal triggered');
+      }
+    }
+
+    if (this.context.debugMode) {
+      console.error('[SystemController] Interrupt handled');
+    }
+
+    return { subtype: 'interrupt' };
+  }
+
+  /**
+   * Handle set_model request
+   *
+   * Implements actual model switching with validation and error handling
+   */
+  private async handleSetModel(
+    payload: CLIControlSetModelRequest,
+  ): Promise<Record<string, unknown>> {
+    const model = payload.model;
+
+    // Validate model parameter
+    if (typeof model !== 'string' || model.trim() === '') {
+      throw new Error('Invalid model specified for set_model request');
+    }
+
+    try {
+      // Attempt to set the model using config
+      await this.context.config.setModel(model);
+
+      if (this.context.debugMode) {
+        console.error(`[SystemController] Model switched to: ${model}`);
+      }
+
+      return {
+        subtype: 'set_model',
+        model,
+      };
+    } catch (error) {
+      const errorMessage =
+        error instanceof Error ? error.message : 'Failed to set model';
+
+      if (this.context.debugMode) {
+        console.error(
+          `[SystemController] Failed to set model ${model}:`,
+          error,
+        );
+      }
+
+      throw new Error(errorMessage);
+    }
+  }
+
+  /**
+   * Handle supported_commands request
+   *
+   * Returns list of supported control commands
+   *
+   * Note: This list should match the ControlRequestType enum in
+   * packages/sdk/typescript/src/types/controlRequests.ts
+   */
+  private async handleSupportedCommands(): Promise<Record<string, unknown>> {
+    const commands = [
+      'initialize',
+      'interrupt',
+      'set_model',
+      'supported_commands',
+      'can_use_tool',
+      'set_permission_mode',
+      'mcp_message',
+      'mcp_server_status',
+      'hook_callback',
+    ];
+
+    return {
+      subtype: 'supported_commands',
+      commands,
+    };
+  }
+}

packages/cli/src/nonInteractive/control/types/serviceAPIs.ts

@@ -0,0 +1,139 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Service API Types
+ *
+ * These interfaces define the public API contract for the ControlService facade.
+ * They provide type-safe, domain-grouped access to control plane functionality
+ * for internal CLI code (nonInteractiveCli, session managers, etc.).
+ */
+
+import type { Client } from '@modelcontextprotocol/sdk/client/index.js';
+import type {
+  ToolCallRequestInfo,
+  MCPServerConfig,
+} from '@qwen-code/qwen-code-core';
+import type { PermissionSuggestion } from '../../types.js';
+
+/**
+ * Permission Service API
+ *
+ * Provides permission-related operations including tool execution approval,
+ * permission suggestions, and tool call monitoring callbacks.
+ */
+export interface PermissionServiceAPI {
+  /**
+   * Check if a tool should be allowed based on current permission settings
+   *
+   * Evaluates permission mode and tool registry to determine if execution
+   * should proceed. Can optionally modify tool arguments based on confirmation details.
+   *
+   * @param toolRequest - Tool call request information containing name, args, and call ID
+   * @param confirmationDetails - Optional confirmation details for UI-driven approvals
+   * @returns Promise resolving to permission decision with optional updated arguments
+   */
+  shouldAllowTool(
+    toolRequest: ToolCallRequestInfo,
+    confirmationDetails?: unknown,
+  ): Promise<{
+    allowed: boolean;
+    message?: string;
+    updatedArgs?: Record<string, unknown>;
+  }>;
+
+  /**
+   * Build UI suggestions for tool confirmation dialogs
+   *
+   * Creates actionable permission suggestions based on tool confirmation details,
+   * helping host applications present appropriate approval/denial options.
+   *
+   * @param confirmationDetails - Tool confirmation details (type, title, metadata)
+   * @returns Array of permission suggestions or null if details are invalid
+   */
+  buildPermissionSuggestions(
+    confirmationDetails: unknown,
+  ): PermissionSuggestion[] | null;
+
+  /**
+   * Get callback for monitoring tool call status updates
+   *
+   * Returns a callback function that should be passed to executeToolCall
+   * to enable integration with CoreToolScheduler updates. This callback
+   * handles outgoing permission requests for tools awaiting approval.
+   *
+   * @returns Callback function that processes tool call updates
+   */
+  getToolCallUpdateCallback(): (toolCalls: unknown[]) => void;
+}
+
+/**
+ * System Service API
+ *
+ * Provides system-level operations for the control system.
+ *
+ * Note: System messages and slash commands are NOT part of the control system API.
+ * They are handled independently via buildSystemMessage() from nonInteractiveHelpers.ts,
+ * regardless of whether the control system is available.
+ */
+export interface SystemServiceAPI {
+  /**
+   * Get control capabilities
+   *
+   * Returns the control capabilities object indicating what control
+   * features are available. Used exclusively for the initialize control
+   * response. System messages do not include capabilities as they are
+   * independent of the control system.
+   *
+   * @returns Control capabilities object
+   */
+  getControlCapabilities(): Record<string, unknown>;
+}
+
+/**
+ * MCP Service API
+ *
+ * Provides Model Context Protocol server interaction including
+ * lazy client initialization and server discovery.
+ */
+export interface McpServiceAPI {
+  /**
+   * Get or create MCP client for a server (lazy initialization)
+   *
+   * Returns an existing client from cache or creates a new connection
+   * if this is the first request for the server. Handles connection
+   * lifecycle and error recovery.
+   *
+   * @param serverName - Name of the MCP server to connect to
+   * @returns Promise resolving to client instance and server configuration
+   * @throws Error if server is not configured or connection fails
+   */
+  getMcpClient(serverName: string): Promise<{
+    client: Client;
+    config: MCPServerConfig;
+  }>;
+
+  /**
+   * List all available MCP servers
+   *
+   * Returns names of both SDK-managed and CLI-managed MCP servers
+   * that are currently configured or connected.
+   *
+   * @returns Array of server names
+   */
+  listServers(): string[];
+}
+
+/**
+ * Hook Service API
+ *
+ * Provides hook callback processing (placeholder for future expansion).
+ */
+export interface HookServiceAPI {
+  // Future: Hook-related methods will be added here
+  // For now, hook functionality is handled only via control requests
+  registerHookCallback(callback: unknown): void;
+}

packages/cli/src/nonInteractive/io/JsonOutputAdapter.test.ts

@@ -0,0 +1,791 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import type {
+  Config,
+  ServerGeminiStreamEvent,
+} from '@qwen-code/qwen-code-core';
+import { GeminiEventType } from '@qwen-code/qwen-code-core';
+import type { Part } from '@google/genai';
+import { JsonOutputAdapter } from './JsonOutputAdapter.js';
+
+function createMockConfig(): Config {
+  return {
+    getSessionId: vi.fn().mockReturnValue('test-session-id'),
+    getModel: vi.fn().mockReturnValue('test-model'),
+  } as unknown as Config;
+}
+
+describe('JsonOutputAdapter', () => {
+  let adapter: JsonOutputAdapter;
+  let mockConfig: Config;
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  let stdoutWriteSpy: any;
+
+  beforeEach(() => {
+    mockConfig = createMockConfig();
+    adapter = new JsonOutputAdapter(mockConfig);
+    stdoutWriteSpy = vi
+      .spyOn(process.stdout, 'write')
+      .mockImplementation(() => true);
+  });
+
+  afterEach(() => {
+    stdoutWriteSpy.mockRestore();
+  });
+
+  describe('startAssistantMessage', () => {
+    it('should reset state for new message', () => {
+      adapter.startAssistantMessage();
+      adapter.startAssistantMessage(); // Start second message
+      // Should not throw
+      expect(() => adapter.finalizeAssistantMessage()).not.toThrow();
+    });
+  });
+
+  describe('processEvent', () => {
+    beforeEach(() => {
+      adapter.startAssistantMessage();
+    });
+
+    it('should append text content from Content events', () => {
+      const event: ServerGeminiStreamEvent = {
+        type: GeminiEventType.Content,
+        value: 'Hello',
+      };
+      adapter.processEvent(event);
+
+      const event2: ServerGeminiStreamEvent = {
+        type: GeminiEventType.Content,
+        value: ' World',
+      };
+      adapter.processEvent(event2);
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0]).toMatchObject({
+        type: 'text',
+        text: 'Hello World',
+      });
+    });
+
+    it('should append citation content from Citation events', () => {
+      const event: ServerGeminiStreamEvent = {
+        type: GeminiEventType.Citation,
+        value: 'Citation text',
+      };
+      adapter.processEvent(event);
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content[0]).toMatchObject({
+        type: 'text',
+        text: expect.stringContaining('Citation text'),
+      });
+    });
+
+    it('should ignore non-string citation values', () => {
+      const event: ServerGeminiStreamEvent = {
+        type: GeminiEventType.Citation,
+        value: 123,
+      } as unknown as ServerGeminiStreamEvent;
+      adapter.processEvent(event);
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(0);
+    });
+
+    it('should append thinking from Thought events', () => {
+      const event: ServerGeminiStreamEvent = {
+        type: GeminiEventType.Thought,
+        value: {
+          subject: 'Planning',
+          description: 'Thinking about the task',
+        },
+      };
+      adapter.processEvent(event);
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0]).toMatchObject({
+        type: 'thinking',
+        thinking: 'Planning: Thinking about the task',
+        signature: 'Planning',
+      });
+    });
+
+    it('should handle thinking with only subject', () => {
+      const event: ServerGeminiStreamEvent = {
+        type: GeminiEventType.Thought,
+        value: {
+          subject: 'Planning',
+          description: '',
+        },
+      };
+      adapter.processEvent(event);
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content[0]).toMatchObject({
+        type: 'thinking',
+        signature: 'Planning',
+      });
+    });
+
+    it('should append tool use from ToolCallRequest events', () => {
+      const event: ServerGeminiStreamEvent = {
+        type: GeminiEventType.ToolCallRequest,
+        value: {
+          callId: 'tool-call-1',
+          name: 'test_tool',
+          args: { param1: 'value1' },
+          isClientInitiated: false,
+          prompt_id: 'prompt-1',
+        },
+      };
+      adapter.processEvent(event);
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0]).toMatchObject({
+        type: 'tool_use',
+        id: 'tool-call-1',
+        name: 'test_tool',
+        input: { param1: 'value1' },
+      });
+    });
+
+    it('should set stop_reason to tool_use when message contains only tool_use blocks', () => {
+      adapter.processEvent({
+        type: GeminiEventType.ToolCallRequest,
+        value: {
+          callId: 'tool-call-1',
+          name: 'test_tool',
+          args: { param1: 'value1' },
+          isClientInitiated: false,
+          prompt_id: 'prompt-1',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.stop_reason).toBe('tool_use');
+    });
+
+    it('should set stop_reason to null when message contains text blocks', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Some text',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.stop_reason).toBeNull();
+    });
+
+    it('should set stop_reason to null when message contains thinking blocks', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Thought,
+        value: {
+          subject: 'Planning',
+          description: 'Thinking about the task',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.stop_reason).toBeNull();
+    });
+
+    it('should set stop_reason to tool_use when message contains multiple tool_use blocks', () => {
+      adapter.processEvent({
+        type: GeminiEventType.ToolCallRequest,
+        value: {
+          callId: 'tool-call-1',
+          name: 'test_tool_1',
+          args: { param1: 'value1' },
+          isClientInitiated: false,
+          prompt_id: 'prompt-1',
+        },
+      });
+      adapter.processEvent({
+        type: GeminiEventType.ToolCallRequest,
+        value: {
+          callId: 'tool-call-2',
+          name: 'test_tool_2',
+          args: { param2: 'value2' },
+          isClientInitiated: false,
+          prompt_id: 'prompt-1',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(2);
+      expect(
+        message.message.content.every((block) => block.type === 'tool_use'),
+      ).toBe(true);
+      expect(message.message.stop_reason).toBe('tool_use');
+    });
+
+    it('should update usage from Finished event', () => {
+      const usageMetadata = {
+        promptTokenCount: 100,
+        candidatesTokenCount: 50,
+        cachedContentTokenCount: 10,
+        totalTokenCount: 160,
+      };
+      const event: ServerGeminiStreamEvent = {
+        type: GeminiEventType.Finished,
+        value: {
+          reason: undefined,
+          usageMetadata,
+        },
+      };
+      adapter.processEvent(event);
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.usage).toMatchObject({
+        input_tokens: 100,
+        output_tokens: 50,
+        cache_read_input_tokens: 10,
+        total_tokens: 160,
+      });
+    });
+
+    it('should finalize pending blocks on Finished event', () => {
+      // Add some text first
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Some text',
+      });
+
+      const event: ServerGeminiStreamEvent = {
+        type: GeminiEventType.Finished,
+        value: { reason: undefined, usageMetadata: undefined },
+      };
+      adapter.processEvent(event);
+
+      // Should not throw when finalizing
+      expect(() => adapter.finalizeAssistantMessage()).not.toThrow();
+    });
+
+    it('should ignore events after finalization', () => {
+      adapter.finalizeAssistantMessage();
+      const originalContent =
+        adapter.finalizeAssistantMessage().message.content;
+
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Should be ignored',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toEqual(originalContent);
+    });
+  });
+
+  describe('finalizeAssistantMessage', () => {
+    beforeEach(() => {
+      adapter.startAssistantMessage();
+    });
+
+    it('should build and emit a complete assistant message', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Test response',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+
+      expect(message.type).toBe('assistant');
+      expect(message.uuid).toBeTruthy();
+      expect(message.session_id).toBe('test-session-id');
+      expect(message.parent_tool_use_id).toBeNull();
+      expect(message.message.role).toBe('assistant');
+      expect(message.message.model).toBe('test-model');
+      expect(message.message.content).toHaveLength(1);
+    });
+
+    it('should return same message on subsequent calls', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Test',
+      });
+
+      const message1 = adapter.finalizeAssistantMessage();
+      const message2 = adapter.finalizeAssistantMessage();
+
+      expect(message1).toEqual(message2);
+    });
+
+    it('should split different block types into separate assistant messages', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Text',
+      });
+      adapter.processEvent({
+        type: GeminiEventType.Thought,
+        value: { subject: 'Thinking', description: 'Thought' },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0].type).toBe('thinking');
+
+      const storedMessages = (adapter as unknown as { messages: unknown[] })
+        .messages;
+      const assistantMessages = storedMessages.filter(
+        (
+          msg,
+        ): msg is {
+          type: string;
+          message: { content: Array<{ type: string }> };
+        } => {
+          if (
+            typeof msg !== 'object' ||
+            msg === null ||
+            !('type' in msg) ||
+            (msg as { type?: string }).type !== 'assistant' ||
+            !('message' in msg)
+          ) {
+            return false;
+          }
+          const message = (msg as { message?: unknown }).message;
+          return (
+            typeof message === 'object' &&
+            message !== null &&
+            'content' in message &&
+            Array.isArray((message as { content?: unknown }).content)
+          );
+        },
+      );
+
+      expect(assistantMessages).toHaveLength(2);
+      for (const assistant of assistantMessages) {
+        const uniqueTypes = new Set(
+          assistant.message.content.map((block) => block.type),
+        );
+        expect(uniqueTypes.size).toBeLessThanOrEqual(1);
+      }
+    });
+
+    it('should throw if message not started', () => {
+      adapter = new JsonOutputAdapter(mockConfig);
+      expect(() => adapter.finalizeAssistantMessage()).toThrow(
+        'Message not started',
+      );
+    });
+  });
+
+  describe('emitResult', () => {
+    beforeEach(() => {
+      adapter.startAssistantMessage();
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Response text',
+      });
+      adapter.finalizeAssistantMessage();
+    });
+
+    it('should emit success result as JSON array', () => {
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      expect(stdoutWriteSpy).toHaveBeenCalled();
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(Array.isArray(parsed)).toBe(true);
+      const resultMessage = parsed.find(
+        (msg: unknown) =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'result',
+      );
+
+      expect(resultMessage).toBeDefined();
+      expect(resultMessage.is_error).toBe(false);
+      expect(resultMessage.subtype).toBe('success');
+      expect(resultMessage.result).toBe('Response text');
+      expect(resultMessage.duration_ms).toBe(1000);
+      expect(resultMessage.num_turns).toBe(1);
+    });
+
+    it('should emit error result', () => {
+      adapter.emitResult({
+        isError: true,
+        errorMessage: 'Test error',
+        durationMs: 500,
+        apiDurationMs: 300,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const resultMessage = parsed.find(
+        (msg: unknown) =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'result',
+      );
+
+      expect(resultMessage.is_error).toBe(true);
+      expect(resultMessage.subtype).toBe('error_during_execution');
+      expect(resultMessage.error?.message).toBe('Test error');
+    });
+
+    it('should use provided summary over extracted text', () => {
+      adapter.emitResult({
+        isError: false,
+        summary: 'Custom summary',
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const resultMessage = parsed.find(
+        (msg: unknown) =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'result',
+      );
+
+      expect(resultMessage.result).toBe('Custom summary');
+    });
+
+    it('should include usage information', () => {
+      const usage = {
+        input_tokens: 100,
+        output_tokens: 50,
+        total_tokens: 150,
+      };
+
+      adapter.emitResult({
+        isError: false,
+        usage,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const resultMessage = parsed.find(
+        (msg: unknown) =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'result',
+      );
+
+      expect(resultMessage.usage).toEqual(usage);
+    });
+
+    it('should include stats when provided', () => {
+      const stats = {
+        models: {},
+        tools: {
+          totalCalls: 5,
+          totalSuccess: 4,
+          totalFail: 1,
+          totalDurationMs: 1000,
+          totalDecisions: {
+            accept: 3,
+            reject: 1,
+            modify: 0,
+            auto_accept: 1,
+          },
+          byName: {},
+        },
+        files: {
+          totalLinesAdded: 10,
+          totalLinesRemoved: 5,
+        },
+      };
+
+      adapter.emitResult({
+        isError: false,
+        stats,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const resultMessage = parsed.find(
+        (msg: unknown) =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'result',
+      );
+
+      expect(resultMessage.stats).toEqual(stats);
+    });
+  });
+
+  describe('emitUserMessage', () => {
+    it('should add user message to collection', () => {
+      const parts: Part[] = [{ text: 'Hello user' }];
+      adapter.emitUserMessage(parts);
+
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const userMessage = parsed.find(
+        (msg: unknown) =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'user',
+      );
+
+      expect(userMessage).toBeDefined();
+      expect(Array.isArray(userMessage.message.content)).toBe(true);
+      if (Array.isArray(userMessage.message.content)) {
+        expect(userMessage.message.content).toHaveLength(1);
+        expect(userMessage.message.content[0]).toEqual({
+          type: 'text',
+          text: 'Hello user',
+        });
+      }
+    });
+
+    it('should handle parent_tool_use_id', () => {
+      const parts: Part[] = [{ text: 'Tool response' }];
+      adapter.emitUserMessage(parts);
+
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const userMessage = parsed.find(
+        (msg: unknown) =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'user',
+      );
+
+      // emitUserMessage currently sets parent_tool_use_id to null
+      expect(userMessage.parent_tool_use_id).toBeNull();
+    });
+  });
+
+  describe('emitToolResult', () => {
+    it('should emit tool result message', () => {
+      const request = {
+        callId: 'tool-1',
+        name: 'test_tool',
+        args: {},
+        isClientInitiated: false,
+        prompt_id: 'prompt-1',
+      };
+      const response = {
+        callId: 'tool-1',
+        responseParts: [],
+        resultDisplay: 'Tool executed successfully',
+        error: undefined,
+        errorType: undefined,
+      };
+
+      adapter.emitToolResult(request, response);
+
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const toolResult = parsed.find(
+        (
+          msg: unknown,
+        ): msg is { type: 'user'; message: { content: unknown[] } } =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'user' &&
+          'message' in msg &&
+          typeof msg.message === 'object' &&
+          msg.message !== null &&
+          'content' in msg.message &&
+          Array.isArray(msg.message.content) &&
+          msg.message.content[0] &&
+          typeof msg.message.content[0] === 'object' &&
+          'type' in msg.message.content[0] &&
+          msg.message.content[0].type === 'tool_result',
+      );
+
+      expect(toolResult).toBeDefined();
+      const block = toolResult.message.content[0] as {
+        type: 'tool_result';
+        tool_use_id: string;
+        content?: string;
+        is_error?: boolean;
+      };
+      expect(block).toMatchObject({
+        type: 'tool_result',
+        tool_use_id: 'tool-1',
+        content: 'Tool executed successfully',
+        is_error: false,
+      });
+    });
+
+    it('should mark error tool results', () => {
+      const request = {
+        callId: 'tool-1',
+        name: 'test_tool',
+        args: {},
+        isClientInitiated: false,
+        prompt_id: 'prompt-1',
+      };
+      const response = {
+        callId: 'tool-1',
+        responseParts: [],
+        resultDisplay: undefined,
+        error: new Error('Tool failed'),
+        errorType: undefined,
+      };
+
+      adapter.emitToolResult(request, response);
+
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const toolResult = parsed.find(
+        (
+          msg: unknown,
+        ): msg is { type: 'user'; message: { content: unknown[] } } =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'user' &&
+          'message' in msg &&
+          typeof msg.message === 'object' &&
+          msg.message !== null &&
+          'content' in msg.message &&
+          Array.isArray(msg.message.content),
+      );
+
+      const block = toolResult.message.content[0] as {
+        is_error?: boolean;
+      };
+      expect(block.is_error).toBe(true);
+    });
+  });
+
+  describe('emitSystemMessage', () => {
+    it('should add system message to collection', () => {
+      adapter.emitSystemMessage('test_subtype', { data: 'value' });
+
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      const systemMessage = parsed.find(
+        (msg: unknown) =>
+          typeof msg === 'object' &&
+          msg !== null &&
+          'type' in msg &&
+          msg.type === 'system',
+      );
+
+      expect(systemMessage).toBeDefined();
+      expect(systemMessage.subtype).toBe('test_subtype');
+      expect(systemMessage.data).toEqual({ data: 'value' });
+    });
+  });
+
+  describe('getSessionId and getModel', () => {
+    it('should return session ID from config', () => {
+      expect(adapter.getSessionId()).toBe('test-session-id');
+      expect(mockConfig.getSessionId).toHaveBeenCalled();
+    });
+
+    it('should return model from config', () => {
+      expect(adapter.getModel()).toBe('test-model');
+      expect(mockConfig.getModel).toHaveBeenCalled();
+    });
+  });
+
+  describe('multiple messages in collection', () => {
+    it('should collect all messages and emit as array', () => {
+      adapter.emitSystemMessage('init', {});
+      adapter.emitUserMessage([{ text: 'User input' }]);
+      adapter.startAssistantMessage();
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Assistant response',
+      });
+      adapter.finalizeAssistantMessage();
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(Array.isArray(parsed)).toBe(true);
+      expect(parsed.length).toBeGreaterThanOrEqual(3);
+      const systemMsg = parsed[0] as { type?: string };
+      const userMsg = parsed[1] as { type?: string };
+      expect(systemMsg.type).toBe('system');
+      expect(userMsg.type).toBe('user');
+      expect(
+        parsed.find(
+          (msg: unknown) =>
+            typeof msg === 'object' &&
+            msg !== null &&
+            'type' in msg &&
+            (msg as { type?: string }).type === 'assistant',
+        ),
+      ).toBeDefined();
+      expect(
+        parsed.find(
+          (msg: unknown) =>
+            typeof msg === 'object' &&
+            msg !== null &&
+            'type' in msg &&
+            (msg as { type?: string }).type === 'result',
+        ),
+      ).toBeDefined();
+    });
+  });
+});

packages/cli/src/nonInteractive/io/JsonOutputAdapter.ts

@@ -0,0 +1,81 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import type { Config } from '@qwen-code/qwen-code-core';
+import type { CLIAssistantMessage, CLIMessage } from '../types.js';
+import {
+  BaseJsonOutputAdapter,
+  type JsonOutputAdapterInterface,
+  type ResultOptions,
+} from './BaseJsonOutputAdapter.js';
+
+/**
+ * JSON output adapter that collects all messages and emits them
+ * as a single JSON array at the end of the turn.
+ * Supports both main agent and subagent messages through distinct APIs.
+ */
+export class JsonOutputAdapter
+  extends BaseJsonOutputAdapter
+  implements JsonOutputAdapterInterface
+{
+  private readonly messages: CLIMessage[] = [];
+
+  constructor(config: Config) {
+    super(config);
+  }
+
+  /**
+   * Emits message to the messages array (batch mode).
+   * Tracks the last assistant message for efficient result text extraction.
+   */
+  protected emitMessageImpl(message: CLIMessage): void {
+    this.messages.push(message);
+    // Track assistant messages for result generation
+    if (
+      typeof message === 'object' &&
+      message !== null &&
+      'type' in message &&
+      message.type === 'assistant'
+    ) {
+      this.updateLastAssistantMessage(message as CLIAssistantMessage);
+    }
+  }
+
+  /**
+   * JSON mode does not emit stream events.
+   */
+  protected shouldEmitStreamEvents(): boolean {
+    return false;
+  }
+
+  finalizeAssistantMessage(): CLIAssistantMessage {
+    const message = this.finalizeAssistantMessageInternal(
+      this.mainAgentMessageState,
+      null,
+    );
+    this.updateLastAssistantMessage(message);
+    return message;
+  }
+
+  emitResult(options: ResultOptions): void {
+    const resultMessage = this.buildResultMessage(
+      options,
+      this.lastAssistantMessage,
+    );
+    this.messages.push(resultMessage);
+
+    // Emit the entire messages array as JSON (includes all main agent + subagent messages)
+    const json = JSON.stringify(this.messages);
+    process.stdout.write(`${json}\n`);
+  }
+
+  emitMessage(message: CLIMessage): void {
+    // In JSON mode, messages are collected in the messages array
+    // This is called by the base class's finalizeAssistantMessageInternal
+    // but can also be called directly for user/tool/system messages
+    this.messages.push(message);
+  }
+}

packages/cli/src/nonInteractive/io/StreamJsonInputReader.test.ts

@@ -0,0 +1,215 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { PassThrough } from 'node:stream';
+import { afterEach, describe, expect, it, vi } from 'vitest';
+import {
+  StreamJsonInputReader,
+  StreamJsonParseError,
+  type StreamJsonInputMessage,
+} from './StreamJsonInputReader.js';
+
+describe('StreamJsonInputReader', () => {
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  describe('read', () => {
+    /**
+     * Test parsing all supported message types in a single test
+     */
+    it('should parse valid messages of all types', async () => {
+      const input = new PassThrough();
+      const reader = new StreamJsonInputReader(input);
+
+      const messages = [
+        {
+          type: 'user',
+          session_id: 'test-session',
+          message: {
+            role: 'user',
+            content: [{ type: 'text', text: 'hello world' }],
+          },
+          parent_tool_use_id: null,
+        },
+        {
+          type: 'control_request',
+          request_id: 'req-1',
+          request: { subtype: 'initialize' },
+        },
+        {
+          type: 'control_response',
+          response: {
+            subtype: 'success',
+            request_id: 'req-1',
+            response: { initialized: true },
+          },
+        },
+        {
+          type: 'control_cancel_request',
+          request_id: 'req-1',
+        },
+      ];
+
+      for (const msg of messages) {
+        input.write(JSON.stringify(msg) + '\n');
+      }
+      input.end();
+
+      const parsed: StreamJsonInputMessage[] = [];
+      for await (const msg of reader.read()) {
+        parsed.push(msg);
+      }
+
+      expect(parsed).toHaveLength(messages.length);
+      expect(parsed).toEqual(messages);
+    });
+
+    it('should parse multiple messages', async () => {
+      const input = new PassThrough();
+      const reader = new StreamJsonInputReader(input);
+
+      const message1 = {
+        type: 'control_request',
+        request_id: 'req-1',
+        request: { subtype: 'initialize' },
+      };
+
+      const message2 = {
+        type: 'user',
+        session_id: 'test-session',
+        message: {
+          role: 'user',
+          content: [{ type: 'text', text: 'hello' }],
+        },
+        parent_tool_use_id: null,
+      };
+
+      input.write(JSON.stringify(message1) + '\n');
+      input.write(JSON.stringify(message2) + '\n');
+      input.end();
+
+      const messages: StreamJsonInputMessage[] = [];
+      for await (const msg of reader.read()) {
+        messages.push(msg);
+      }
+
+      expect(messages).toHaveLength(2);
+      expect(messages[0]).toEqual(message1);
+      expect(messages[1]).toEqual(message2);
+    });
+
+    it('should skip empty lines and trim whitespace', async () => {
+      const input = new PassThrough();
+      const reader = new StreamJsonInputReader(input);
+
+      const message = {
+        type: 'user',
+        session_id: 'test-session',
+        message: {
+          role: 'user',
+          content: [{ type: 'text', text: 'hello' }],
+        },
+        parent_tool_use_id: null,
+      };
+
+      input.write('\n');
+      input.write('  ' + JSON.stringify(message) + '  \n');
+      input.write('  \n');
+      input.write('\t\n');
+      input.end();
+
+      const messages: StreamJsonInputMessage[] = [];
+      for await (const msg of reader.read()) {
+        messages.push(msg);
+      }
+
+      expect(messages).toHaveLength(1);
+      expect(messages[0]).toEqual(message);
+    });
+
+    /**
+     * Consolidated error handling test cases
+     */
+    it.each([
+      {
+        name: 'invalid JSON',
+        input: '{"invalid": json}\n',
+        expectedError: 'Failed to parse stream-json line',
+      },
+      {
+        name: 'missing type field',
+        input:
+          JSON.stringify({ session_id: 'test-session', message: 'hello' }) +
+          '\n',
+        expectedError: 'Missing required "type" field',
+      },
+      {
+        name: 'non-object value (string)',
+        input: '"just a string"\n',
+        expectedError: 'Parsed value is not an object',
+      },
+      {
+        name: 'non-object value (null)',
+        input: 'null\n',
+        expectedError: 'Parsed value is not an object',
+      },
+      {
+        name: 'array value',
+        input: '[1, 2, 3]\n',
+        expectedError: 'Missing required "type" field',
+      },
+      {
+        name: 'type field not a string',
+        input: JSON.stringify({ type: 123, session_id: 'test-session' }) + '\n',
+        expectedError: 'Missing required "type" field',
+      },
+    ])(
+      'should throw StreamJsonParseError for $name',
+      async ({ input: inputLine, expectedError }) => {
+        const input = new PassThrough();
+        const reader = new StreamJsonInputReader(input);
+
+        input.write(inputLine);
+        input.end();
+
+        const messages: StreamJsonInputMessage[] = [];
+        let error: unknown;
+
+        try {
+          for await (const msg of reader.read()) {
+            messages.push(msg);
+          }
+        } catch (e) {
+          error = e;
+        }
+
+        expect(messages).toHaveLength(0);
+        expect(error).toBeInstanceOf(StreamJsonParseError);
+        expect((error as StreamJsonParseError).message).toContain(
+          expectedError,
+        );
+      },
+    );
+
+    it('should use process.stdin as default input', () => {
+      const reader = new StreamJsonInputReader();
+      // Access private field for testing constructor default parameter
+      expect((reader as unknown as { input: typeof process.stdin }).input).toBe(
+        process.stdin,
+      );
+    });
+
+    it('should use provided input stream', () => {
+      const customInput = new PassThrough();
+      const reader = new StreamJsonInputReader(customInput);
+      // Access private field for testing constructor parameter
+      expect((reader as unknown as { input: typeof customInput }).input).toBe(
+        customInput,
+      );
+    });
+  });
+});

packages/cli/src/nonInteractive/io/StreamJsonInputReader.ts

@@ -0,0 +1,73 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { createInterface } from 'node:readline/promises';
+import type { Readable } from 'node:stream';
+import process from 'node:process';
+import type {
+  CLIControlRequest,
+  CLIControlResponse,
+  CLIMessage,
+  ControlCancelRequest,
+} from '../types.js';
+
+export type StreamJsonInputMessage =
+  | CLIMessage
+  | CLIControlRequest
+  | CLIControlResponse
+  | ControlCancelRequest;
+
+export class StreamJsonParseError extends Error {}
+
+export class StreamJsonInputReader {
+  private readonly input: Readable;
+
+  constructor(input: Readable = process.stdin) {
+    this.input = input;
+  }
+
+  async *read(): AsyncGenerator<StreamJsonInputMessage> {
+    const rl = createInterface({
+      input: this.input,
+      crlfDelay: Number.POSITIVE_INFINITY,
+      terminal: false,
+    });
+
+    try {
+      for await (const rawLine of rl) {
+        const line = rawLine.trim();
+        if (!line) {
+          continue;
+        }
+
+        yield this.parse(line);
+      }
+    } finally {
+      rl.close();
+    }
+  }
+
+  private parse(line: string): StreamJsonInputMessage {
+    try {
+      const parsed = JSON.parse(line) as StreamJsonInputMessage;
+      if (!parsed || typeof parsed !== 'object') {
+        throw new StreamJsonParseError('Parsed value is not an object');
+      }
+      if (!('type' in parsed) || typeof parsed.type !== 'string') {
+        throw new StreamJsonParseError('Missing required "type" field');
+      }
+      return parsed;
+    } catch (error) {
+      if (error instanceof StreamJsonParseError) {
+        throw error;
+      }
+      const reason = error instanceof Error ? error.message : String(error);
+      throw new StreamJsonParseError(
+        `Failed to parse stream-json line: ${reason}`,
+      );
+    }
+  }
+}

packages/cli/src/nonInteractive/io/StreamJsonOutputAdapter.test.ts

@@ -0,0 +1,997 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import type {
+  Config,
+  ServerGeminiStreamEvent,
+} from '@qwen-code/qwen-code-core';
+import { GeminiEventType } from '@qwen-code/qwen-code-core';
+import type { Part } from '@google/genai';
+import { StreamJsonOutputAdapter } from './StreamJsonOutputAdapter.js';
+
+function createMockConfig(): Config {
+  return {
+    getSessionId: vi.fn().mockReturnValue('test-session-id'),
+    getModel: vi.fn().mockReturnValue('test-model'),
+  } as unknown as Config;
+}
+
+describe('StreamJsonOutputAdapter', () => {
+  let adapter: StreamJsonOutputAdapter;
+  let mockConfig: Config;
+  // eslint-disable-next-line @typescript-eslint/no-explicit-any
+  let stdoutWriteSpy: any;
+
+  beforeEach(() => {
+    mockConfig = createMockConfig();
+    stdoutWriteSpy = vi
+      .spyOn(process.stdout, 'write')
+      .mockImplementation(() => true);
+  });
+
+  afterEach(() => {
+    stdoutWriteSpy.mockRestore();
+  });
+
+  describe('with partial messages enabled', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, true);
+    });
+
+    describe('startAssistantMessage', () => {
+      it('should reset state for new message', () => {
+        adapter.startAssistantMessage();
+        adapter.processEvent({
+          type: GeminiEventType.Content,
+          value: 'First',
+        });
+        adapter.finalizeAssistantMessage();
+
+        adapter.startAssistantMessage();
+        adapter.processEvent({
+          type: GeminiEventType.Content,
+          value: 'Second',
+        });
+
+        const message = adapter.finalizeAssistantMessage();
+        expect(message.message.content[0]).toMatchObject({
+          type: 'text',
+          text: 'Second',
+        });
+      });
+    });
+
+    describe('processEvent with stream events', () => {
+      beforeEach(() => {
+        adapter.startAssistantMessage();
+      });
+
+      it('should emit stream events for text deltas', () => {
+        adapter.processEvent({
+          type: GeminiEventType.Content,
+          value: 'Hello',
+        });
+
+        const calls = stdoutWriteSpy.mock.calls;
+        expect(calls.length).toBeGreaterThan(0);
+
+        const deltaEventCall = calls.find((call: unknown[]) => {
+          try {
+            const parsed = JSON.parse(call[0] as string);
+            return (
+              parsed.type === 'stream_event' &&
+              parsed.event.type === 'content_block_delta'
+            );
+          } catch {
+            return false;
+          }
+        });
+
+        expect(deltaEventCall).toBeDefined();
+        const parsed = JSON.parse(deltaEventCall![0] as string);
+        expect(parsed.event.type).toBe('content_block_delta');
+        expect(parsed.event.delta).toMatchObject({
+          type: 'text_delta',
+          text: 'Hello',
+        });
+      });
+
+      it('should emit message_start event on first content', () => {
+        adapter.processEvent({
+          type: GeminiEventType.Content,
+          value: 'First',
+        });
+
+        const calls = stdoutWriteSpy.mock.calls;
+        const messageStartCall = calls.find((call: unknown[]) => {
+          try {
+            const parsed = JSON.parse(call[0] as string);
+            return (
+              parsed.type === 'stream_event' &&
+              parsed.event.type === 'message_start'
+            );
+          } catch {
+            return false;
+          }
+        });
+
+        expect(messageStartCall).toBeDefined();
+      });
+
+      it('should emit content_block_start for new blocks', () => {
+        adapter.processEvent({
+          type: GeminiEventType.Content,
+          value: 'Text',
+        });
+
+        const calls = stdoutWriteSpy.mock.calls;
+        const blockStartCall = calls.find((call: unknown[]) => {
+          try {
+            const parsed = JSON.parse(call[0] as string);
+            return (
+              parsed.type === 'stream_event' &&
+              parsed.event.type === 'content_block_start'
+            );
+          } catch {
+            return false;
+          }
+        });
+
+        expect(blockStartCall).toBeDefined();
+      });
+
+      it('should emit thinking delta events', () => {
+        adapter.processEvent({
+          type: GeminiEventType.Thought,
+          value: {
+            subject: 'Planning',
+            description: 'Thinking',
+          },
+        });
+
+        const calls = stdoutWriteSpy.mock.calls;
+        const deltaCall = calls.find((call: unknown[]) => {
+          try {
+            const parsed = JSON.parse(call[0] as string);
+            return (
+              parsed.type === 'stream_event' &&
+              parsed.event.type === 'content_block_delta' &&
+              parsed.event.delta.type === 'thinking_delta'
+            );
+          } catch {
+            return false;
+          }
+        });
+
+        expect(deltaCall).toBeDefined();
+      });
+
+      it('should emit message_stop on finalization', () => {
+        adapter.processEvent({
+          type: GeminiEventType.Content,
+          value: 'Text',
+        });
+        adapter.finalizeAssistantMessage();
+
+        const calls = stdoutWriteSpy.mock.calls;
+        const messageStopCall = calls.find((call: unknown[]) => {
+          try {
+            const parsed = JSON.parse(call[0] as string);
+            return (
+              parsed.type === 'stream_event' &&
+              parsed.event.type === 'message_stop'
+            );
+          } catch {
+            return false;
+          }
+        });
+
+        expect(messageStopCall).toBeDefined();
+      });
+    });
+  });
+
+  describe('with partial messages disabled', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+    });
+
+    it('should not emit stream events', () => {
+      adapter.startAssistantMessage();
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Text',
+      });
+
+      const calls = stdoutWriteSpy.mock.calls;
+      const streamEventCall = calls.find((call: unknown[]) => {
+        try {
+          const parsed = JSON.parse(call[0] as string);
+          return parsed.type === 'stream_event';
+        } catch {
+          return false;
+        }
+      });
+
+      expect(streamEventCall).toBeUndefined();
+    });
+
+    it('should still emit final assistant message', () => {
+      adapter.startAssistantMessage();
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Text',
+      });
+      adapter.finalizeAssistantMessage();
+
+      const calls = stdoutWriteSpy.mock.calls;
+      const assistantCall = calls.find((call: unknown[]) => {
+        try {
+          const parsed = JSON.parse(call[0] as string);
+          return parsed.type === 'assistant';
+        } catch {
+          return false;
+        }
+      });
+
+      expect(assistantCall).toBeDefined();
+    });
+  });
+
+  describe('processEvent', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+      adapter.startAssistantMessage();
+    });
+
+    it('should append text content from Content events', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Hello',
+      });
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: ' World',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0]).toMatchObject({
+        type: 'text',
+        text: 'Hello World',
+      });
+    });
+
+    it('should append citation content from Citation events', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Citation,
+        value: 'Citation text',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content[0]).toMatchObject({
+        type: 'text',
+        text: expect.stringContaining('Citation text'),
+      });
+    });
+
+    it('should ignore non-string citation values', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Citation,
+        value: 123,
+      } as unknown as ServerGeminiStreamEvent);
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(0);
+    });
+
+    it('should append thinking from Thought events', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Thought,
+        value: {
+          subject: 'Planning',
+          description: 'Thinking about the task',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0]).toMatchObject({
+        type: 'thinking',
+        thinking: 'Planning: Thinking about the task',
+        signature: 'Planning',
+      });
+    });
+
+    it('should handle thinking with only subject', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Thought,
+        value: {
+          subject: 'Planning',
+          description: '',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content[0]).toMatchObject({
+        type: 'thinking',
+        signature: 'Planning',
+      });
+    });
+
+    it('should append tool use from ToolCallRequest events', () => {
+      adapter.processEvent({
+        type: GeminiEventType.ToolCallRequest,
+        value: {
+          callId: 'tool-call-1',
+          name: 'test_tool',
+          args: { param1: 'value1' },
+          isClientInitiated: false,
+          prompt_id: 'prompt-1',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0]).toMatchObject({
+        type: 'tool_use',
+        id: 'tool-call-1',
+        name: 'test_tool',
+        input: { param1: 'value1' },
+      });
+    });
+
+    it('should set stop_reason to tool_use when message contains only tool_use blocks', () => {
+      adapter.processEvent({
+        type: GeminiEventType.ToolCallRequest,
+        value: {
+          callId: 'tool-call-1',
+          name: 'test_tool',
+          args: { param1: 'value1' },
+          isClientInitiated: false,
+          prompt_id: 'prompt-1',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.stop_reason).toBe('tool_use');
+    });
+
+    it('should set stop_reason to null when message contains text blocks', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Some text',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.stop_reason).toBeNull();
+    });
+
+    it('should set stop_reason to null when message contains thinking blocks', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Thought,
+        value: {
+          subject: 'Planning',
+          description: 'Thinking about the task',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.stop_reason).toBeNull();
+    });
+
+    it('should set stop_reason to tool_use when message contains multiple tool_use blocks', () => {
+      adapter.processEvent({
+        type: GeminiEventType.ToolCallRequest,
+        value: {
+          callId: 'tool-call-1',
+          name: 'test_tool_1',
+          args: { param1: 'value1' },
+          isClientInitiated: false,
+          prompt_id: 'prompt-1',
+        },
+      });
+      adapter.processEvent({
+        type: GeminiEventType.ToolCallRequest,
+        value: {
+          callId: 'tool-call-2',
+          name: 'test_tool_2',
+          args: { param2: 'value2' },
+          isClientInitiated: false,
+          prompt_id: 'prompt-1',
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(2);
+      expect(
+        message.message.content.every((block) => block.type === 'tool_use'),
+      ).toBe(true);
+      expect(message.message.stop_reason).toBe('tool_use');
+    });
+
+    it('should update usage from Finished event', () => {
+      const usageMetadata = {
+        promptTokenCount: 100,
+        candidatesTokenCount: 50,
+        cachedContentTokenCount: 10,
+        totalTokenCount: 160,
+      };
+      adapter.processEvent({
+        type: GeminiEventType.Finished,
+        value: {
+          reason: undefined,
+          usageMetadata,
+        },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.usage).toMatchObject({
+        input_tokens: 100,
+        output_tokens: 50,
+        cache_read_input_tokens: 10,
+        total_tokens: 160,
+      });
+    });
+
+    it('should ignore events after finalization', () => {
+      adapter.finalizeAssistantMessage();
+      const originalContent =
+        adapter.finalizeAssistantMessage().message.content;
+
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Should be ignored',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toEqual(originalContent);
+    });
+  });
+
+  describe('finalizeAssistantMessage', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+      adapter.startAssistantMessage();
+    });
+
+    it('should build and emit a complete assistant message', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Test response',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+
+      expect(message.type).toBe('assistant');
+      expect(message.uuid).toBeTruthy();
+      expect(message.session_id).toBe('test-session-id');
+      expect(message.parent_tool_use_id).toBeNull();
+      expect(message.message.role).toBe('assistant');
+      expect(message.message.model).toBe('test-model');
+      expect(message.message.content).toHaveLength(1);
+    });
+
+    it('should emit message to stdout immediately', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Test',
+      });
+
+      stdoutWriteSpy.mockClear();
+      adapter.finalizeAssistantMessage();
+
+      expect(stdoutWriteSpy).toHaveBeenCalled();
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+      expect(parsed.type).toBe('assistant');
+    });
+
+    it('should store message in lastAssistantMessage', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Test',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      // Access protected property for testing
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      expect((adapter as any).lastAssistantMessage).toEqual(message);
+    });
+
+    it('should return same message on subsequent calls', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Test',
+      });
+
+      const message1 = adapter.finalizeAssistantMessage();
+      const message2 = adapter.finalizeAssistantMessage();
+
+      expect(message1).toEqual(message2);
+    });
+
+    it('should split different block types into separate assistant messages', () => {
+      stdoutWriteSpy.mockClear();
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Text',
+      });
+      adapter.processEvent({
+        type: GeminiEventType.Thought,
+        value: { subject: 'Thinking', description: 'Thought' },
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0].type).toBe('thinking');
+
+      const assistantMessages = stdoutWriteSpy.mock.calls
+        .map((call: unknown[]) => JSON.parse(call[0] as string))
+        .filter(
+          (
+            payload: unknown,
+          ): payload is {
+            type: string;
+            message: { content: Array<{ type: string }> };
+          } => {
+            if (
+              typeof payload !== 'object' ||
+              payload === null ||
+              !('type' in payload) ||
+              (payload as { type?: string }).type !== 'assistant' ||
+              !('message' in payload)
+            ) {
+              return false;
+            }
+            const message = (payload as { message?: unknown }).message;
+            if (
+              typeof message !== 'object' ||
+              message === null ||
+              !('content' in message)
+            ) {
+              return false;
+            }
+            const content = (message as { content?: unknown }).content;
+            return (
+              Array.isArray(content) &&
+              content.length > 0 &&
+              content.every(
+                (block: unknown) =>
+                  typeof block === 'object' &&
+                  block !== null &&
+                  'type' in block,
+              )
+            );
+          },
+        );
+
+      expect(assistantMessages).toHaveLength(2);
+      const observedTypes = assistantMessages.map(
+        (payload: {
+          type: string;
+          message: { content: Array<{ type: string }> };
+        }) => payload.message.content[0]?.type ?? '',
+      );
+      expect(observedTypes).toEqual(['text', 'thinking']);
+      for (const payload of assistantMessages) {
+        const uniqueTypes = new Set(
+          payload.message.content.map((block: { type: string }) => block.type),
+        );
+        expect(uniqueTypes.size).toBeLessThanOrEqual(1);
+      }
+    });
+
+    it('should throw if message not started', () => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+      expect(() => adapter.finalizeAssistantMessage()).toThrow(
+        'Message not started',
+      );
+    });
+  });
+
+  describe('emitResult', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+      adapter.startAssistantMessage();
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Response text',
+      });
+      adapter.finalizeAssistantMessage();
+    });
+
+    it('should emit success result immediately', () => {
+      stdoutWriteSpy.mockClear();
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      expect(stdoutWriteSpy).toHaveBeenCalled();
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(parsed.type).toBe('result');
+      expect(parsed.is_error).toBe(false);
+      expect(parsed.subtype).toBe('success');
+      expect(parsed.result).toBe('Response text');
+      expect(parsed.duration_ms).toBe(1000);
+      expect(parsed.num_turns).toBe(1);
+    });
+
+    it('should emit error result', () => {
+      stdoutWriteSpy.mockClear();
+      adapter.emitResult({
+        isError: true,
+        errorMessage: 'Test error',
+        durationMs: 500,
+        apiDurationMs: 300,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(parsed.is_error).toBe(true);
+      expect(parsed.subtype).toBe('error_during_execution');
+      expect(parsed.error?.message).toBe('Test error');
+    });
+
+    it('should use provided summary over extracted text', () => {
+      stdoutWriteSpy.mockClear();
+      adapter.emitResult({
+        isError: false,
+        summary: 'Custom summary',
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(parsed.result).toBe('Custom summary');
+    });
+
+    it('should include usage information', () => {
+      const usage = {
+        input_tokens: 100,
+        output_tokens: 50,
+        total_tokens: 150,
+      };
+
+      stdoutWriteSpy.mockClear();
+      adapter.emitResult({
+        isError: false,
+        usage,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(parsed.usage).toEqual(usage);
+    });
+
+    it('should handle result without assistant message', () => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+      stdoutWriteSpy.mockClear();
+      adapter.emitResult({
+        isError: false,
+        durationMs: 1000,
+        apiDurationMs: 800,
+        numTurns: 1,
+      });
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(parsed.result).toBe('');
+    });
+  });
+
+  describe('emitUserMessage', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+    });
+
+    it('should emit user message immediately', () => {
+      stdoutWriteSpy.mockClear();
+      const parts: Part[] = [{ text: 'Hello user' }];
+      adapter.emitUserMessage(parts);
+
+      expect(stdoutWriteSpy).toHaveBeenCalled();
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(parsed.type).toBe('user');
+      expect(Array.isArray(parsed.message.content)).toBe(true);
+      if (Array.isArray(parsed.message.content)) {
+        expect(parsed.message.content).toHaveLength(1);
+        expect(parsed.message.content[0]).toEqual({
+          type: 'text',
+          text: 'Hello user',
+        });
+      }
+    });
+
+    it('should handle parent_tool_use_id', () => {
+      const parts: Part[] = [{ text: 'Tool response' }];
+      adapter.emitUserMessage(parts);
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      // emitUserMessage currently sets parent_tool_use_id to null
+      expect(parsed.parent_tool_use_id).toBeNull();
+    });
+  });
+
+  describe('emitToolResult', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+    });
+
+    it('should emit tool result message immediately', () => {
+      stdoutWriteSpy.mockClear();
+      const request = {
+        callId: 'tool-1',
+        name: 'test_tool',
+        args: {},
+        isClientInitiated: false,
+        prompt_id: 'prompt-1',
+      };
+      const response = {
+        callId: 'tool-1',
+        responseParts: [],
+        resultDisplay: 'Tool executed successfully',
+        error: undefined,
+        errorType: undefined,
+      };
+
+      adapter.emitToolResult(request, response);
+
+      expect(stdoutWriteSpy).toHaveBeenCalled();
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(parsed.type).toBe('user');
+      expect(parsed.parent_tool_use_id).toBeNull();
+      const block = parsed.message.content[0];
+      expect(block).toMatchObject({
+        type: 'tool_result',
+        tool_use_id: 'tool-1',
+        content: 'Tool executed successfully',
+        is_error: false,
+      });
+    });
+
+    it('should mark error tool results', () => {
+      const request = {
+        callId: 'tool-1',
+        name: 'test_tool',
+        args: {},
+        isClientInitiated: false,
+        prompt_id: 'prompt-1',
+      };
+      const response = {
+        callId: 'tool-1',
+        responseParts: [],
+        resultDisplay: undefined,
+        error: new Error('Tool failed'),
+        errorType: undefined,
+      };
+
+      adapter.emitToolResult(request, response);
+
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      const block = parsed.message.content[0];
+      expect(block.is_error).toBe(true);
+    });
+  });
+
+  describe('emitSystemMessage', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+    });
+
+    it('should emit system message immediately', () => {
+      stdoutWriteSpy.mockClear();
+      adapter.emitSystemMessage('test_subtype', { data: 'value' });
+
+      expect(stdoutWriteSpy).toHaveBeenCalled();
+      const output = stdoutWriteSpy.mock.calls[0][0] as string;
+      const parsed = JSON.parse(output);
+
+      expect(parsed.type).toBe('system');
+      expect(parsed.subtype).toBe('test_subtype');
+      expect(parsed.data).toEqual({ data: 'value' });
+    });
+  });
+
+  describe('getSessionId and getModel', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+    });
+
+    it('should return session ID from config', () => {
+      expect(adapter.getSessionId()).toBe('test-session-id');
+      expect(mockConfig.getSessionId).toHaveBeenCalled();
+    });
+
+    it('should return model from config', () => {
+      expect(adapter.getModel()).toBe('test-model');
+      expect(mockConfig.getModel).toHaveBeenCalled();
+    });
+  });
+
+  describe('message_id in stream events', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, true);
+      adapter.startAssistantMessage();
+    });
+
+    it('should include message_id in stream events after message starts', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Text',
+      });
+      // Process another event to ensure messageStarted is true
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'More',
+      });
+
+      const calls = stdoutWriteSpy.mock.calls;
+      // Find all delta events
+      const deltaCalls = calls.filter((call: unknown[]) => {
+        try {
+          const parsed = JSON.parse(call[0] as string);
+          return (
+            parsed.type === 'stream_event' &&
+            parsed.event.type === 'content_block_delta'
+          );
+        } catch {
+          return false;
+        }
+      });
+
+      expect(deltaCalls.length).toBeGreaterThan(0);
+      // The second delta event should have message_id (after messageStarted becomes true)
+      // message_id is added to the event object, so check parsed.event.message_id
+      if (deltaCalls.length > 1) {
+        const secondDelta = JSON.parse(
+          (deltaCalls[1] as unknown[])[0] as string,
+        );
+        // message_id is on the enriched event object
+        expect(
+          secondDelta.event.message_id || secondDelta.message_id,
+        ).toBeTruthy();
+      } else {
+        // If only one delta, check if message_id exists
+        const delta = JSON.parse((deltaCalls[0] as unknown[])[0] as string);
+        // message_id is added when messageStarted is true
+        // First event may or may not have it, but subsequent ones should
+        expect(delta.event.message_id || delta.message_id).toBeTruthy();
+      }
+    });
+  });
+
+  describe('multiple text blocks', () => {
+    beforeEach(() => {
+      adapter = new StreamJsonOutputAdapter(mockConfig, false);
+      adapter.startAssistantMessage();
+    });
+
+    it('should split assistant messages when block types change repeatedly', () => {
+      stdoutWriteSpy.mockClear();
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Text content',
+      });
+      adapter.processEvent({
+        type: GeminiEventType.Thought,
+        value: { subject: 'Thinking', description: 'Thought' },
+      });
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'More text',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0]).toMatchObject({
+        type: 'text',
+        text: 'More text',
+      });
+
+      const assistantMessages = stdoutWriteSpy.mock.calls
+        .map((call: unknown[]) => JSON.parse(call[0] as string))
+        .filter(
+          (
+            payload: unknown,
+          ): payload is {
+            type: string;
+            message: { content: Array<{ type: string; text?: string }> };
+          } => {
+            if (
+              typeof payload !== 'object' ||
+              payload === null ||
+              !('type' in payload) ||
+              (payload as { type?: string }).type !== 'assistant' ||
+              !('message' in payload)
+            ) {
+              return false;
+            }
+            const message = (payload as { message?: unknown }).message;
+            if (
+              typeof message !== 'object' ||
+              message === null ||
+              !('content' in message)
+            ) {
+              return false;
+            }
+            const content = (message as { content?: unknown }).content;
+            return (
+              Array.isArray(content) &&
+              content.length > 0 &&
+              content.every(
+                (block: unknown) =>
+                  typeof block === 'object' &&
+                  block !== null &&
+                  'type' in block,
+              )
+            );
+          },
+        );
+
+      expect(assistantMessages).toHaveLength(3);
+      const observedTypes = assistantMessages.map(
+        (msg: {
+          type: string;
+          message: { content: Array<{ type: string; text?: string }> };
+        }) => msg.message.content[0]?.type ?? '',
+      );
+      expect(observedTypes).toEqual(['text', 'thinking', 'text']);
+      for (const msg of assistantMessages) {
+        const uniqueTypes = new Set(
+          msg.message.content.map((block: { type: string }) => block.type),
+        );
+        expect(uniqueTypes.size).toBeLessThanOrEqual(1);
+      }
+    });
+
+    it('should merge consecutive text fragments', () => {
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'Hello',
+      });
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: ' ',
+      });
+      adapter.processEvent({
+        type: GeminiEventType.Content,
+        value: 'World',
+      });
+
+      const message = adapter.finalizeAssistantMessage();
+      expect(message.message.content).toHaveLength(1);
+      expect(message.message.content[0]).toMatchObject({
+        type: 'text',
+        text: 'Hello World',
+      });
+    });
+  });
+});

packages/cli/src/nonInteractive/io/StreamJsonOutputAdapter.ts

@@ -0,0 +1,300 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { randomUUID } from 'node:crypto';
+import type { Config } from '@qwen-code/qwen-code-core';
+import type {
+  CLIAssistantMessage,
+  CLIMessage,
+  CLIPartialAssistantMessage,
+  ControlMessage,
+  StreamEvent,
+  TextBlock,
+  ThinkingBlock,
+  ToolUseBlock,
+} from '../types.js';
+import {
+  BaseJsonOutputAdapter,
+  type MessageState,
+  type ResultOptions,
+  type JsonOutputAdapterInterface,
+} from './BaseJsonOutputAdapter.js';
+
+/**
+ * Stream JSON output adapter that emits messages immediately
+ * as they are completed during the streaming process.
+ * Supports both main agent and subagent messages through distinct APIs.
+ */
+export class StreamJsonOutputAdapter
+  extends BaseJsonOutputAdapter
+  implements JsonOutputAdapterInterface
+{
+  constructor(
+    config: Config,
+    private readonly includePartialMessages: boolean,
+  ) {
+    super(config);
+  }
+
+  /**
+   * Emits message immediately to stdout (stream mode).
+   */
+  protected emitMessageImpl(message: CLIMessage | ControlMessage): void {
+    // Track assistant messages for result generation
+    if (
+      typeof message === 'object' &&
+      message !== null &&
+      'type' in message &&
+      message.type === 'assistant'
+    ) {
+      this.updateLastAssistantMessage(message as CLIAssistantMessage);
+    }
+
+    // Emit messages immediately in stream mode
+    process.stdout.write(`${JSON.stringify(message)}\n`);
+  }
+
+  /**
+   * Stream mode emits stream events when includePartialMessages is enabled.
+   */
+  protected shouldEmitStreamEvents(): boolean {
+    return this.includePartialMessages;
+  }
+
+  finalizeAssistantMessage(): CLIAssistantMessage {
+    const state = this.mainAgentMessageState;
+    if (state.finalized) {
+      return this.buildMessage(null);
+    }
+    state.finalized = true;
+
+    this.finalizePendingBlocks(state, null);
+    const orderedOpenBlocks = Array.from(state.openBlocks).sort(
+      (a, b) => a - b,
+    );
+    for (const index of orderedOpenBlocks) {
+      this.onBlockClosed(state, index, null);
+      this.closeBlock(state, index);
+    }
+
+    if (state.messageStarted && this.includePartialMessages) {
+      this.emitStreamEventIfEnabled({ type: 'message_stop' }, null);
+    }
+
+    const message = this.buildMessage(null);
+    this.updateLastAssistantMessage(message);
+    this.emitMessageImpl(message);
+    return message;
+  }
+
+  emitResult(options: ResultOptions): void {
+    const resultMessage = this.buildResultMessage(
+      options,
+      this.lastAssistantMessage,
+    );
+    this.emitMessageImpl(resultMessage);
+  }
+
+  emitMessage(message: CLIMessage | ControlMessage): void {
+    // In stream mode, emit immediately
+    this.emitMessageImpl(message);
+  }
+
+  send(message: CLIMessage | ControlMessage): void {
+    this.emitMessage(message);
+  }
+
+  /**
+   * Overrides base class hook to emit stream event when text block is created.
+   */
+  protected override onTextBlockCreated(
+    state: MessageState,
+    index: number,
+    block: TextBlock,
+    parentToolUseId: string | null,
+  ): void {
+    this.emitStreamEventIfEnabled(
+      {
+        type: 'content_block_start',
+        index,
+        content_block: block,
+      },
+      parentToolUseId,
+    );
+  }
+
+  /**
+   * Overrides base class hook to emit stream event when text is appended.
+   */
+  protected override onTextAppended(
+    state: MessageState,
+    index: number,
+    fragment: string,
+    parentToolUseId: string | null,
+  ): void {
+    this.emitStreamEventIfEnabled(
+      {
+        type: 'content_block_delta',
+        index,
+        delta: { type: 'text_delta', text: fragment },
+      },
+      parentToolUseId,
+    );
+  }
+
+  /**
+   * Overrides base class hook to emit stream event when thinking block is created.
+   */
+  protected override onThinkingBlockCreated(
+    state: MessageState,
+    index: number,
+    block: ThinkingBlock,
+    parentToolUseId: string | null,
+  ): void {
+    this.emitStreamEventIfEnabled(
+      {
+        type: 'content_block_start',
+        index,
+        content_block: block,
+      },
+      parentToolUseId,
+    );
+  }
+
+  /**
+   * Overrides base class hook to emit stream event when thinking is appended.
+   */
+  protected override onThinkingAppended(
+    state: MessageState,
+    index: number,
+    fragment: string,
+    parentToolUseId: string | null,
+  ): void {
+    this.emitStreamEventIfEnabled(
+      {
+        type: 'content_block_delta',
+        index,
+        delta: { type: 'thinking_delta', thinking: fragment },
+      },
+      parentToolUseId,
+    );
+  }
+
+  /**
+   * Overrides base class hook to emit stream event when tool_use block is created.
+   */
+  protected override onToolUseBlockCreated(
+    state: MessageState,
+    index: number,
+    block: ToolUseBlock,
+    parentToolUseId: string | null,
+  ): void {
+    this.emitStreamEventIfEnabled(
+      {
+        type: 'content_block_start',
+        index,
+        content_block: block,
+      },
+      parentToolUseId,
+    );
+  }
+
+  /**
+   * Overrides base class hook to emit stream event when tool_use input is set.
+   */
+  protected override onToolUseInputSet(
+    state: MessageState,
+    index: number,
+    input: unknown,
+    parentToolUseId: string | null,
+  ): void {
+    this.emitStreamEventIfEnabled(
+      {
+        type: 'content_block_delta',
+        index,
+        delta: {
+          type: 'input_json_delta',
+          partial_json: JSON.stringify(input),
+        },
+      },
+      parentToolUseId,
+    );
+  }
+
+  /**
+   * Overrides base class hook to emit stream event when block is closed.
+   */
+  protected override onBlockClosed(
+    state: MessageState,
+    index: number,
+    parentToolUseId: string | null,
+  ): void {
+    if (this.includePartialMessages) {
+      this.emitStreamEventIfEnabled(
+        {
+          type: 'content_block_stop',
+          index,
+        },
+        parentToolUseId,
+      );
+    }
+  }
+
+  /**
+   * Overrides base class hook to emit message_start event when message is started.
+   * Only emits for main agent, not for subagents.
+   */
+  protected override onEnsureMessageStarted(
+    state: MessageState,
+    parentToolUseId: string | null,
+  ): void {
+    // Only emit message_start for main agent, not for subagents
+    if (parentToolUseId === null) {
+      this.emitStreamEventIfEnabled(
+        {
+          type: 'message_start',
+          message: {
+            id: state.messageId!,
+            role: 'assistant',
+            model: this.config.getModel(),
+          },
+        },
+        null,
+      );
+    }
+  }
+
+  /**
+   * Emits stream events when partial messages are enabled.
+   * This is a private method specific to StreamJsonOutputAdapter.
+   * @param event - Stream event to emit
+   * @param parentToolUseId - null for main agent, string for subagent
+   */
+  private emitStreamEventIfEnabled(
+    event: StreamEvent,
+    parentToolUseId: string | null,
+  ): void {
+    if (!this.includePartialMessages) {
+      return;
+    }
+
+    const state = this.getMessageState(parentToolUseId);
+    const enrichedEvent = state.messageStarted
+      ? ({ ...event, message_id: state.messageId } as StreamEvent & {
+          message_id: string;
+        })
+      : event;
+
+    const partial: CLIPartialAssistantMessage = {
+      type: 'stream_event',
+      uuid: randomUUID(),
+      session_id: this.getSessionId(),
+      parent_tool_use_id: parentToolUseId,
+      event: enrichedEvent,
+    };
+    this.emitMessageImpl(partial);
+  }
+}

packages/cli/src/nonInteractive/session.test.ts

@@ -0,0 +1,591 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
+import type { Config } from '@qwen-code/qwen-code-core';
+import { runNonInteractiveStreamJson } from './session.js';
+import type {
+  CLIUserMessage,
+  CLIControlRequest,
+  CLIControlResponse,
+  ControlCancelRequest,
+} from './types.js';
+import { StreamJsonInputReader } from './io/StreamJsonInputReader.js';
+import { StreamJsonOutputAdapter } from './io/StreamJsonOutputAdapter.js';
+import { ControlDispatcher } from './control/ControlDispatcher.js';
+import { ControlContext } from './control/ControlContext.js';
+import { ControlService } from './control/ControlService.js';
+import { ConsolePatcher } from '../ui/utils/ConsolePatcher.js';
+
+const runNonInteractiveMock = vi.fn();
+
+// Mock dependencies
+vi.mock('../nonInteractiveCli.js', () => ({
+  runNonInteractive: (...args: unknown[]) => runNonInteractiveMock(...args),
+}));
+
+vi.mock('./io/StreamJsonInputReader.js', () => ({
+  StreamJsonInputReader: vi.fn(),
+}));
+
+vi.mock('./io/StreamJsonOutputAdapter.js', () => ({
+  StreamJsonOutputAdapter: vi.fn(),
+}));
+
+vi.mock('./control/ControlDispatcher.js', () => ({
+  ControlDispatcher: vi.fn(),
+}));
+
+vi.mock('./control/ControlContext.js', () => ({
+  ControlContext: vi.fn(),
+}));
+
+vi.mock('./control/ControlService.js', () => ({
+  ControlService: vi.fn(),
+}));
+
+vi.mock('../ui/utils/ConsolePatcher.js', () => ({
+  ConsolePatcher: vi.fn(),
+}));
+
+interface ConfigOverrides {
+  getSessionId?: () => string;
+  getModel?: () => string;
+  getIncludePartialMessages?: () => boolean;
+  getDebugMode?: () => boolean;
+  getApprovalMode?: () => string;
+  getOutputFormat?: () => string;
+  [key: string]: unknown;
+}
+
+function createConfig(overrides: ConfigOverrides = {}): Config {
+  const base = {
+    getSessionId: () => 'test-session',
+    getModel: () => 'test-model',
+    getIncludePartialMessages: () => false,
+    getDebugMode: () => false,
+    getApprovalMode: () => 'auto',
+    getOutputFormat: () => 'stream-json',
+  };
+  return { ...base, ...overrides } as unknown as Config;
+}
+
+function createUserMessage(content: string): CLIUserMessage {
+  return {
+    type: 'user',
+    session_id: 'test-session',
+    message: {
+      role: 'user',
+      content,
+    },
+    parent_tool_use_id: null,
+  };
+}
+
+function createControlRequest(
+  subtype: 'initialize' | 'set_model' | 'interrupt' = 'initialize',
+): CLIControlRequest {
+  if (subtype === 'set_model') {
+    return {
+      type: 'control_request',
+      request_id: 'req-1',
+      request: {
+        subtype: 'set_model',
+        model: 'test-model',
+      },
+    };
+  }
+  if (subtype === 'interrupt') {
+    return {
+      type: 'control_request',
+      request_id: 'req-1',
+      request: {
+        subtype: 'interrupt',
+      },
+    };
+  }
+  return {
+    type: 'control_request',
+    request_id: 'req-1',
+    request: {
+      subtype: 'initialize',
+    },
+  };
+}
+
+function createControlResponse(requestId: string): CLIControlResponse {
+  return {
+    type: 'control_response',
+    response: {
+      subtype: 'success',
+      request_id: requestId,
+      response: {},
+    },
+  };
+}
+
+function createControlCancel(requestId: string): ControlCancelRequest {
+  return {
+    type: 'control_cancel_request',
+    request_id: requestId,
+  };
+}
+
+describe('runNonInteractiveStreamJson', () => {
+  let config: Config;
+  let mockInputReader: {
+    read: () => AsyncGenerator<
+      | CLIUserMessage
+      | CLIControlRequest
+      | CLIControlResponse
+      | ControlCancelRequest
+    >;
+  };
+  let mockOutputAdapter: {
+    emitResult: ReturnType<typeof vi.fn>;
+  };
+  let mockDispatcher: {
+    dispatch: ReturnType<typeof vi.fn>;
+    handleControlResponse: ReturnType<typeof vi.fn>;
+    handleCancel: ReturnType<typeof vi.fn>;
+    shutdown: ReturnType<typeof vi.fn>;
+  };
+  let mockConsolePatcher: {
+    patch: ReturnType<typeof vi.fn>;
+    cleanup: ReturnType<typeof vi.fn>;
+  };
+
+  beforeEach(() => {
+    config = createConfig();
+    runNonInteractiveMock.mockReset();
+
+    // Setup mocks
+    mockConsolePatcher = {
+      patch: vi.fn(),
+      cleanup: vi.fn(),
+    };
+    (ConsolePatcher as unknown as ReturnType<typeof vi.fn>).mockImplementation(
+      () => mockConsolePatcher,
+    );
+
+    mockOutputAdapter = {
+      emitResult: vi.fn(),
+    } as {
+      emitResult: ReturnType<typeof vi.fn>;
+      [key: string]: unknown;
+    };
+    (
+      StreamJsonOutputAdapter as unknown as ReturnType<typeof vi.fn>
+    ).mockImplementation(() => mockOutputAdapter);
+
+    mockDispatcher = {
+      dispatch: vi.fn().mockResolvedValue(undefined),
+      handleControlResponse: vi.fn(),
+      handleCancel: vi.fn(),
+      shutdown: vi.fn(),
+    };
+    (
+      ControlDispatcher as unknown as ReturnType<typeof vi.fn>
+    ).mockImplementation(() => mockDispatcher);
+    (ControlContext as unknown as ReturnType<typeof vi.fn>).mockImplementation(
+      () => ({}),
+    );
+    (ControlService as unknown as ReturnType<typeof vi.fn>).mockImplementation(
+      () => ({}),
+    );
+
+    mockInputReader = {
+      async *read() {
+        // Default: empty stream
+        // Override in tests as needed
+      },
+    };
+    (
+      StreamJsonInputReader as unknown as ReturnType<typeof vi.fn>
+    ).mockImplementation(() => mockInputReader);
+
+    runNonInteractiveMock.mockResolvedValue(undefined);
+  });
+
+  afterEach(() => {
+    vi.restoreAllMocks();
+  });
+
+  it('initializes session and processes initialize control request', async () => {
+    const initRequest = createControlRequest('initialize');
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockConsolePatcher.patch).toHaveBeenCalledTimes(1);
+    expect(mockDispatcher.dispatch).toHaveBeenCalledWith(initRequest);
+    expect(mockConsolePatcher.cleanup).toHaveBeenCalledTimes(1);
+  });
+
+  it('processes user message when received as first message', async () => {
+    const userMessage = createUserMessage('Hello world');
+
+    mockInputReader.read = async function* () {
+      yield userMessage;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(runNonInteractiveMock).toHaveBeenCalledTimes(1);
+    const runCall = runNonInteractiveMock.mock.calls[0];
+    expect(runCall[2]).toBe('Hello world'); // Direct text, not processed
+    expect(typeof runCall[3]).toBe('string'); // promptId
+    expect(runCall[4]).toEqual(
+      expect.objectContaining({
+        abortController: expect.any(AbortController),
+        adapter: mockOutputAdapter,
+      }),
+    );
+  });
+
+  it('processes multiple user messages sequentially', async () => {
+    // Initialize first to enable multi-query mode
+    const initRequest = createControlRequest('initialize');
+    const userMessage1 = createUserMessage('First message');
+    const userMessage2 = createUserMessage('Second message');
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      yield userMessage1;
+      yield userMessage2;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(runNonInteractiveMock).toHaveBeenCalledTimes(2);
+  });
+
+  it('enqueues user messages received during processing', async () => {
+    const initRequest = createControlRequest('initialize');
+    const userMessage1 = createUserMessage('First message');
+    const userMessage2 = createUserMessage('Second message');
+
+    // Make runNonInteractive take some time to simulate processing
+    runNonInteractiveMock.mockImplementation(
+      () => new Promise((resolve) => setTimeout(resolve, 10)),
+    );
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      yield userMessage1;
+      yield userMessage2;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    // Both messages should be processed
+    expect(runNonInteractiveMock).toHaveBeenCalledTimes(2);
+  });
+
+  it('processes control request in idle state', async () => {
+    const initRequest = createControlRequest('initialize');
+    const controlRequest = createControlRequest('set_model');
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      yield controlRequest;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockDispatcher.dispatch).toHaveBeenCalledTimes(2);
+    expect(mockDispatcher.dispatch).toHaveBeenNthCalledWith(1, initRequest);
+    expect(mockDispatcher.dispatch).toHaveBeenNthCalledWith(2, controlRequest);
+  });
+
+  it('handles control response in idle state', async () => {
+    const initRequest = createControlRequest('initialize');
+    const controlResponse = createControlResponse('req-2');
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      yield controlResponse;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockDispatcher.handleControlResponse).toHaveBeenCalledWith(
+      controlResponse,
+    );
+  });
+
+  it('handles control cancel in idle state', async () => {
+    const initRequest = createControlRequest('initialize');
+    const cancelRequest = createControlCancel('req-2');
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      yield cancelRequest;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockDispatcher.handleCancel).toHaveBeenCalledWith('req-2');
+  });
+
+  it('handles control request during processing state', async () => {
+    const initRequest = createControlRequest('initialize');
+    const userMessage = createUserMessage('Process me');
+    const controlRequest = createControlRequest('set_model');
+
+    runNonInteractiveMock.mockImplementation(
+      () => new Promise((resolve) => setTimeout(resolve, 10)),
+    );
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      yield userMessage;
+      yield controlRequest;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockDispatcher.dispatch).toHaveBeenCalledWith(controlRequest);
+  });
+
+  it('handles control response during processing state', async () => {
+    const initRequest = createControlRequest('initialize');
+    const userMessage = createUserMessage('Process me');
+    const controlResponse = createControlResponse('req-1');
+
+    runNonInteractiveMock.mockImplementation(
+      () => new Promise((resolve) => setTimeout(resolve, 10)),
+    );
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      yield userMessage;
+      yield controlResponse;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockDispatcher.handleControlResponse).toHaveBeenCalledWith(
+      controlResponse,
+    );
+  });
+
+  it('handles user message with text content', async () => {
+    const userMessage = createUserMessage('Test message');
+
+    mockInputReader.read = async function* () {
+      yield userMessage;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(runNonInteractiveMock).toHaveBeenCalledTimes(1);
+    expect(runNonInteractiveMock).toHaveBeenCalledWith(
+      config,
+      expect.objectContaining({ merged: expect.any(Object) }),
+      'Test message',
+      expect.stringContaining('test-session'),
+      expect.objectContaining({
+        abortController: expect.any(AbortController),
+        adapter: mockOutputAdapter,
+      }),
+    );
+  });
+
+  it('handles user message with array content blocks', async () => {
+    const userMessage: CLIUserMessage = {
+      type: 'user',
+      session_id: 'test-session',
+      message: {
+        role: 'user',
+        content: [
+          { type: 'text', text: 'First part' },
+          { type: 'text', text: 'Second part' },
+        ],
+      },
+      parent_tool_use_id: null,
+    };
+
+    mockInputReader.read = async function* () {
+      yield userMessage;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(runNonInteractiveMock).toHaveBeenCalledTimes(1);
+    expect(runNonInteractiveMock).toHaveBeenCalledWith(
+      config,
+      expect.objectContaining({ merged: expect.any(Object) }),
+      'First part\nSecond part',
+      expect.stringContaining('test-session'),
+      expect.objectContaining({
+        abortController: expect.any(AbortController),
+        adapter: mockOutputAdapter,
+      }),
+    );
+  });
+
+  it('skips user message with no text content', async () => {
+    const userMessage: CLIUserMessage = {
+      type: 'user',
+      session_id: 'test-session',
+      message: {
+        role: 'user',
+        content: [],
+      },
+      parent_tool_use_id: null,
+    };
+
+    mockInputReader.read = async function* () {
+      yield userMessage;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(runNonInteractiveMock).not.toHaveBeenCalled();
+  });
+
+  it('handles error from processUserMessage', async () => {
+    const userMessage = createUserMessage('Test message');
+
+    const error = new Error('Processing error');
+    runNonInteractiveMock.mockRejectedValue(error);
+
+    mockInputReader.read = async function* () {
+      yield userMessage;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    // Error should be caught and handled gracefully
+  });
+
+  it('handles stream error gracefully', async () => {
+    const streamError = new Error('Stream error');
+    // eslint-disable-next-line require-yield
+    mockInputReader.read = async function* () {
+      throw streamError;
+    } as typeof mockInputReader.read;
+
+    await expect(runNonInteractiveStreamJson(config, '')).rejects.toThrow(
+      'Stream error',
+    );
+
+    expect(mockConsolePatcher.cleanup).toHaveBeenCalled();
+  });
+
+  it('stops processing when abort signal is triggered', async () => {
+    const initRequest = createControlRequest('initialize');
+    const userMessage = createUserMessage('Test message');
+
+    // Capture abort signal from ControlContext
+    let abortSignal: AbortSignal | null = null;
+    (ControlContext as unknown as ReturnType<typeof vi.fn>).mockImplementation(
+      (options: { abortSignal?: AbortSignal }) => {
+        abortSignal = options.abortSignal ?? null;
+        return {};
+      },
+    );
+
+    // Create input reader that aborts after first message
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      // Abort the signal after initialization
+      if (abortSignal && !abortSignal.aborted) {
+        // The signal doesn't have an abort method, but the controller does
+        // Since we can't access the controller directly, we'll test by
+        // verifying that cleanup happens properly
+      }
+      // Yield second message - if abort works, it should be checked
+      yield userMessage;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    // Verify initialization happened
+    expect(mockDispatcher.dispatch).toHaveBeenCalledWith(initRequest);
+    expect(mockDispatcher.shutdown).toHaveBeenCalled();
+  });
+
+  it('generates unique prompt IDs for each message', async () => {
+    // Initialize first to enable multi-query mode
+    const initRequest = createControlRequest('initialize');
+    const userMessage1 = createUserMessage('First');
+    const userMessage2 = createUserMessage('Second');
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+      yield userMessage1;
+      yield userMessage2;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(runNonInteractiveMock).toHaveBeenCalledTimes(2);
+    const promptId1 = runNonInteractiveMock.mock.calls[0][3] as string;
+    const promptId2 = runNonInteractiveMock.mock.calls[1][3] as string;
+    expect(promptId1).not.toBe(promptId2);
+    expect(promptId1).toContain('test-session');
+    expect(promptId2).toContain('test-session');
+  });
+
+  it('ignores non-initialize control request during initialization', async () => {
+    const controlRequest = createControlRequest('set_model');
+
+    mockInputReader.read = async function* () {
+      yield controlRequest;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    // Should not transition to idle since it's not an initialize request
+    expect(mockDispatcher.dispatch).not.toHaveBeenCalled();
+  });
+
+  it('cleans up console patcher on completion', async () => {
+    mockInputReader.read = async function* () {
+      // Empty stream - should complete immediately
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockConsolePatcher.patch).toHaveBeenCalledTimes(1);
+    expect(mockConsolePatcher.cleanup).toHaveBeenCalledTimes(1);
+  });
+
+  it('cleans up output adapter on completion', async () => {
+    mockInputReader.read = async function* () {
+      // Empty stream
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+  });
+
+  it('calls dispatcher shutdown on completion', async () => {
+    const initRequest = createControlRequest('initialize');
+
+    mockInputReader.read = async function* () {
+      yield initRequest;
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockDispatcher.shutdown).toHaveBeenCalledTimes(1);
+  });
+
+  it('handles empty stream gracefully', async () => {
+    mockInputReader.read = async function* () {
+      // Empty stream
+    };
+
+    await runNonInteractiveStreamJson(config, '');
+
+    expect(mockConsolePatcher.cleanup).toHaveBeenCalled();
+  });
+});

packages/cli/src/nonInteractive/session.ts

@@ -0,0 +1,721 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Stream JSON Runner with Session State Machine
+ *
+ * Handles stream-json input/output format with:
+ * - Initialize handshake
+ * - Message routing (control vs user messages)
+ * - FIFO user message queue
+ * - Sequential message processing
+ * - Graceful shutdown
+ */
+
+import type { Config } from '@qwen-code/qwen-code-core';
+import { StreamJsonInputReader } from './io/StreamJsonInputReader.js';
+import { StreamJsonOutputAdapter } from './io/StreamJsonOutputAdapter.js';
+import { ControlContext } from './control/ControlContext.js';
+import { ControlDispatcher } from './control/ControlDispatcher.js';
+import { ControlService } from './control/ControlService.js';
+import type {
+  CLIMessage,
+  CLIUserMessage,
+  CLIControlRequest,
+  CLIControlResponse,
+  ControlCancelRequest,
+} from './types.js';
+import {
+  isCLIUserMessage,
+  isCLIAssistantMessage,
+  isCLISystemMessage,
+  isCLIResultMessage,
+  isCLIPartialAssistantMessage,
+  isControlRequest,
+  isControlResponse,
+  isControlCancel,
+} from './types.js';
+import { createMinimalSettings } from '../config/settings.js';
+import { runNonInteractive } from '../nonInteractiveCli.js';
+import { ConsolePatcher } from '../ui/utils/ConsolePatcher.js';
+
+const SESSION_STATE = {
+  INITIALIZING: 'initializing',
+  IDLE: 'idle',
+  PROCESSING_QUERY: 'processing_query',
+  SHUTTING_DOWN: 'shutting_down',
+} as const;
+
+type SessionState = (typeof SESSION_STATE)[keyof typeof SESSION_STATE];
+
+/**
+ * Message type classification for routing
+ */
+type MessageType =
+  | 'control_request'
+  | 'control_response'
+  | 'control_cancel'
+  | 'user'
+  | 'assistant'
+  | 'system'
+  | 'result'
+  | 'stream_event'
+  | 'unknown';
+
+/**
+ * Routed message with classification
+ */
+interface RoutedMessage {
+  type: MessageType;
+  message:
+    | CLIMessage
+    | CLIControlRequest
+    | CLIControlResponse
+    | ControlCancelRequest;
+}
+
+/**
+ * Session Manager
+ *
+ * Manages the session lifecycle and message processing state machine.
+ */
+class SessionManager {
+  private state: SessionState = SESSION_STATE.INITIALIZING;
+  private userMessageQueue: CLIUserMessage[] = [];
+  private abortController: AbortController;
+  private config: Config;
+  private sessionId: string;
+  private promptIdCounter: number = 0;
+  private inputReader: StreamJsonInputReader;
+  private outputAdapter: StreamJsonOutputAdapter;
+  private controlContext: ControlContext | null = null;
+  private dispatcher: ControlDispatcher | null = null;
+  private controlService: ControlService | null = null;
+  private controlSystemEnabled: boolean | null = null;
+  private debugMode: boolean;
+  private shutdownHandler: (() => void) | null = null;
+  private initialPrompt: CLIUserMessage | null = null;
+
+  constructor(config: Config, initialPrompt?: CLIUserMessage) {
+    this.config = config;
+    this.sessionId = config.getSessionId();
+    this.debugMode = config.getDebugMode();
+    this.abortController = new AbortController();
+    this.initialPrompt = initialPrompt ?? null;
+
+    this.inputReader = new StreamJsonInputReader();
+    this.outputAdapter = new StreamJsonOutputAdapter(
+      config,
+      config.getIncludePartialMessages(),
+    );
+
+    // Setup signal handlers for graceful shutdown
+    this.setupSignalHandlers();
+  }
+
+  /**
+   * Get next prompt ID
+   */
+  private getNextPromptId(): string {
+    this.promptIdCounter++;
+    return `${this.sessionId}########${this.promptIdCounter}`;
+  }
+
+  /**
+   * Route a message to the appropriate handler based on its type
+   *
+   * Classifies incoming messages and routes them to appropriate handlers.
+   */
+  private route(
+    message:
+      | CLIMessage
+      | CLIControlRequest
+      | CLIControlResponse
+      | ControlCancelRequest,
+  ): RoutedMessage {
+    // Check control messages first
+    if (isControlRequest(message)) {
+      return { type: 'control_request', message };
+    }
+    if (isControlResponse(message)) {
+      return { type: 'control_response', message };
+    }
+    if (isControlCancel(message)) {
+      return { type: 'control_cancel', message };
+    }
+
+    // Check data messages
+    if (isCLIUserMessage(message)) {
+      return { type: 'user', message };
+    }
+    if (isCLIAssistantMessage(message)) {
+      return { type: 'assistant', message };
+    }
+    if (isCLISystemMessage(message)) {
+      return { type: 'system', message };
+    }
+    if (isCLIResultMessage(message)) {
+      return { type: 'result', message };
+    }
+    if (isCLIPartialAssistantMessage(message)) {
+      return { type: 'stream_event', message };
+    }
+
+    // Unknown message type
+    if (this.debugMode) {
+      console.error(
+        '[SessionManager] Unknown message type:',
+        JSON.stringify(message, null, 2),
+      );
+    }
+    return { type: 'unknown', message };
+  }
+
+  /**
+   * Process a single message with unified logic for both initial prompt and stream messages.
+   *
+   * Handles:
+   * - Abort check
+   * - First message detection and handling
+   * - Normal message processing
+   * - Shutdown state checks
+   *
+   * @param message - Message to process
+   * @returns true if the calling code should exit (break/return), false to continue
+   */
+  private async processSingleMessage(
+    message:
+      | CLIMessage
+      | CLIControlRequest
+      | CLIControlResponse
+      | ControlCancelRequest,
+  ): Promise<boolean> {
+    // Check for abort
+    if (this.abortController.signal.aborted) {
+      return true;
+    }
+
+    // Handle first message if control system not yet initialized
+    if (this.controlSystemEnabled === null) {
+      const handled = await this.handleFirstMessage(message);
+      if (handled) {
+        // If handled, check if we should shutdown
+        return this.state === SESSION_STATE.SHUTTING_DOWN;
+      }
+      // If not handled, fall through to normal processing
+    }
+
+    // Process message normally
+    await this.processMessage(message);
+
+    // Check for shutdown after processing
+    return this.state === SESSION_STATE.SHUTTING_DOWN;
+  }
+
+  /**
+   * Main entry point - run the session
+   */
+  async run(): Promise<void> {
+    try {
+      if (this.debugMode) {
+        console.error('[SessionManager] Starting session', this.sessionId);
+      }
+
+      // Process initial prompt if provided
+      if (this.initialPrompt !== null) {
+        const shouldExit = await this.processSingleMessage(this.initialPrompt);
+        if (shouldExit) {
+          await this.shutdown();
+          return;
+        }
+      }
+
+      // Process messages from stream
+      for await (const message of this.inputReader.read()) {
+        const shouldExit = await this.processSingleMessage(message);
+        if (shouldExit) {
+          break;
+        }
+      }
+
+      // Stream closed, shutdown
+      await this.shutdown();
+    } catch (error) {
+      if (this.debugMode) {
+        console.error('[SessionManager] Error:', error);
+      }
+      await this.shutdown();
+      throw error;
+    } finally {
+      // Ensure signal handlers are always cleaned up even if shutdown wasn't called
+      this.cleanupSignalHandlers();
+    }
+  }
+
+  private ensureControlSystem(): void {
+    if (this.controlContext && this.dispatcher && this.controlService) {
+      return;
+    }
+    // The control system follows a strict three-layer architecture:
+    // 1. ControlContext (shared session state)
+    // 2. ControlDispatcher (protocol routing SDK ↔ CLI)
+    // 3. ControlService (programmatic API for CLI runtime)
+    //
+    // Application code MUST interact with the control plane exclusively through
+    // ControlService. ControlDispatcher is reserved for protocol-level message
+    // routing and should never be used directly outside of this file.
+    this.controlContext = new ControlContext({
+      config: this.config,
+      streamJson: this.outputAdapter,
+      sessionId: this.sessionId,
+      abortSignal: this.abortController.signal,
+      permissionMode: this.config.getApprovalMode(),
+      onInterrupt: () => this.handleInterrupt(),
+    });
+    this.dispatcher = new ControlDispatcher(this.controlContext);
+    this.controlService = new ControlService(
+      this.controlContext,
+      this.dispatcher,
+    );
+  }
+
+  private getDispatcher(): ControlDispatcher | null {
+    if (this.controlSystemEnabled !== true) {
+      return null;
+    }
+    if (!this.dispatcher) {
+      this.ensureControlSystem();
+    }
+    return this.dispatcher;
+  }
+
+  private async handleFirstMessage(
+    message:
+      | CLIMessage
+      | CLIControlRequest
+      | CLIControlResponse
+      | ControlCancelRequest,
+  ): Promise<boolean> {
+    const routed = this.route(message);
+
+    if (routed.type === 'control_request') {
+      const request = routed.message as CLIControlRequest;
+      this.controlSystemEnabled = true;
+      this.ensureControlSystem();
+      if (request.request.subtype === 'initialize') {
+        await this.dispatcher?.dispatch(request);
+        this.state = SESSION_STATE.IDLE;
+        return true;
+      }
+      return false;
+    }
+
+    if (routed.type === 'user') {
+      this.controlSystemEnabled = false;
+      this.state = SESSION_STATE.PROCESSING_QUERY;
+      this.userMessageQueue.push(routed.message as CLIUserMessage);
+      await this.processUserMessageQueue();
+      return true;
+    }
+
+    this.controlSystemEnabled = false;
+    return false;
+  }
+
+  /**
+   * Process a single message from the stream
+   */
+  private async processMessage(
+    message:
+      | CLIMessage
+      | CLIControlRequest
+      | CLIControlResponse
+      | ControlCancelRequest,
+  ): Promise<void> {
+    const routed = this.route(message);
+
+    if (this.debugMode) {
+      console.error(
+        `[SessionManager] State: ${this.state}, Message type: ${routed.type}`,
+      );
+    }
+
+    switch (this.state) {
+      case SESSION_STATE.INITIALIZING:
+        await this.handleInitializingState(routed);
+        break;
+
+      case SESSION_STATE.IDLE:
+        await this.handleIdleState(routed);
+        break;
+
+      case SESSION_STATE.PROCESSING_QUERY:
+        await this.handleProcessingState(routed);
+        break;
+
+      case SESSION_STATE.SHUTTING_DOWN:
+        // Ignore all messages during shutdown
+        break;
+
+      default: {
+        // Exhaustive check
+        const _exhaustiveCheck: never = this.state;
+        if (this.debugMode) {
+          console.error('[SessionManager] Unknown state:', _exhaustiveCheck);
+        }
+        break;
+      }
+    }
+  }
+
+  /**
+   * Handle messages in initializing state
+   */
+  private async handleInitializingState(routed: RoutedMessage): Promise<void> {
+    if (routed.type === 'control_request') {
+      const request = routed.message as CLIControlRequest;
+      const dispatcher = this.getDispatcher();
+      if (!dispatcher) {
+        if (this.debugMode) {
+          console.error(
+            '[SessionManager] Control request received before control system initialization',
+          );
+        }
+        return;
+      }
+      if (request.request.subtype === 'initialize') {
+        await dispatcher.dispatch(request);
+        this.state = SESSION_STATE.IDLE;
+        if (this.debugMode) {
+          console.error('[SessionManager] Initialized, transitioning to idle');
+        }
+      } else {
+        if (this.debugMode) {
+          console.error(
+            '[SessionManager] Ignoring non-initialize control request during initialization',
+          );
+        }
+      }
+    } else {
+      if (this.debugMode) {
+        console.error(
+          '[SessionManager] Ignoring non-control message during initialization',
+        );
+      }
+    }
+  }
+
+  /**
+   * Handle messages in idle state
+   */
+  private async handleIdleState(routed: RoutedMessage): Promise<void> {
+    const dispatcher = this.getDispatcher();
+    if (routed.type === 'control_request') {
+      if (!dispatcher) {
+        if (this.debugMode) {
+          console.error('[SessionManager] Ignoring control request (disabled)');
+        }
+        return;
+      }
+      const request = routed.message as CLIControlRequest;
+      await dispatcher.dispatch(request);
+      // Stay in idle state
+    } else if (routed.type === 'control_response') {
+      if (!dispatcher) {
+        return;
+      }
+      const response = routed.message as CLIControlResponse;
+      dispatcher.handleControlResponse(response);
+      // Stay in idle state
+    } else if (routed.type === 'control_cancel') {
+      if (!dispatcher) {
+        return;
+      }
+      const cancelRequest = routed.message as ControlCancelRequest;
+      dispatcher.handleCancel(cancelRequest.request_id);
+    } else if (routed.type === 'user') {
+      const userMessage = routed.message as CLIUserMessage;
+      this.userMessageQueue.push(userMessage);
+      // Start processing queue
+      await this.processUserMessageQueue();
+    } else {
+      if (this.debugMode) {
+        console.error(
+          '[SessionManager] Ignoring message type in idle state:',
+          routed.type,
+        );
+      }
+    }
+  }
+
+  /**
+   * Handle messages in processing state
+   */
+  private async handleProcessingState(routed: RoutedMessage): Promise<void> {
+    const dispatcher = this.getDispatcher();
+    if (routed.type === 'control_request') {
+      if (!dispatcher) {
+        if (this.debugMode) {
+          console.error(
+            '[SessionManager] Control request ignored during processing (disabled)',
+          );
+        }
+        return;
+      }
+      const request = routed.message as CLIControlRequest;
+      await dispatcher.dispatch(request);
+      // Continue processing
+    } else if (routed.type === 'control_response') {
+      if (!dispatcher) {
+        return;
+      }
+      const response = routed.message as CLIControlResponse;
+      dispatcher.handleControlResponse(response);
+      // Continue processing
+    } else if (routed.type === 'user') {
+      // Enqueue for later
+      const userMessage = routed.message as CLIUserMessage;
+      this.userMessageQueue.push(userMessage);
+      if (this.debugMode) {
+        console.error(
+          '[SessionManager] Enqueued user message during processing',
+        );
+      }
+    } else {
+      if (this.debugMode) {
+        console.error(
+          '[SessionManager] Ignoring message type during processing:',
+          routed.type,
+        );
+      }
+    }
+  }
+
+  /**
+   * Process user message queue (FIFO)
+   */
+  private async processUserMessageQueue(): Promise<void> {
+    while (
+      this.userMessageQueue.length > 0 &&
+      !this.abortController.signal.aborted
+    ) {
+      this.state = SESSION_STATE.PROCESSING_QUERY;
+      const userMessage = this.userMessageQueue.shift()!;
+
+      try {
+        await this.processUserMessage(userMessage);
+      } catch (error) {
+        if (this.debugMode) {
+          console.error(
+            '[SessionManager] Error processing user message:',
+            error,
+          );
+        }
+        // Send error result
+        this.emitErrorResult(error);
+      }
+    }
+
+    // If control system is disabled (single-query mode) and queue is empty,
+    // automatically shutdown instead of returning to idle
+    if (
+      !this.abortController.signal.aborted &&
+      this.state === SESSION_STATE.PROCESSING_QUERY &&
+      this.controlSystemEnabled === false &&
+      this.userMessageQueue.length === 0
+    ) {
+      if (this.debugMode) {
+        console.error(
+          '[SessionManager] Single-query mode: queue processed, shutting down',
+        );
+      }
+      this.state = SESSION_STATE.SHUTTING_DOWN;
+      return;
+    }
+
+    // Return to idle after processing queue (for multi-query mode with control system)
+    if (
+      !this.abortController.signal.aborted &&
+      this.state === SESSION_STATE.PROCESSING_QUERY
+    ) {
+      this.state = SESSION_STATE.IDLE;
+      if (this.debugMode) {
+        console.error('[SessionManager] Queue processed, returning to idle');
+      }
+    }
+  }
+
+  /**
+   * Process a single user message
+   */
+  private async processUserMessage(userMessage: CLIUserMessage): Promise<void> {
+    const input = extractUserMessageText(userMessage);
+    if (!input) {
+      if (this.debugMode) {
+        console.error('[SessionManager] No text content in user message');
+      }
+      return;
+    }
+
+    const promptId = this.getNextPromptId();
+
+    try {
+      await runNonInteractive(
+        this.config,
+        createMinimalSettings(),
+        input,
+        promptId,
+        {
+          abortController: this.abortController,
+          adapter: this.outputAdapter,
+          controlService: this.controlService ?? undefined,
+        },
+      );
+    } catch (error) {
+      // Error already handled by runNonInteractive via adapter.emitResult
+      if (this.debugMode) {
+        console.error('[SessionManager] Query execution error:', error);
+      }
+    }
+  }
+
+  /**
+   * Send tool results as user message
+   */
+  private emitErrorResult(
+    error: unknown,
+    numTurns: number = 0,
+    durationMs: number = 0,
+    apiDurationMs: number = 0,
+  ): void {
+    const message = error instanceof Error ? error.message : String(error);
+    this.outputAdapter.emitResult({
+      isError: true,
+      errorMessage: message,
+      durationMs,
+      apiDurationMs,
+      numTurns,
+      usage: undefined,
+    });
+  }
+
+  /**
+   * Handle interrupt control request
+   */
+  private handleInterrupt(): void {
+    if (this.debugMode) {
+      console.error('[SessionManager] Interrupt requested');
+    }
+    // Abort current query if processing
+    if (this.state === SESSION_STATE.PROCESSING_QUERY) {
+      this.abortController.abort();
+      this.abortController = new AbortController(); // Create new controller for next query
+    }
+  }
+
+  /**
+   * Setup signal handlers for graceful shutdown
+   */
+  private setupSignalHandlers(): void {
+    this.shutdownHandler = () => {
+      if (this.debugMode) {
+        console.error('[SessionManager] Shutdown signal received');
+      }
+      this.abortController.abort();
+      this.state = SESSION_STATE.SHUTTING_DOWN;
+    };
+
+    process.on('SIGINT', this.shutdownHandler);
+    process.on('SIGTERM', this.shutdownHandler);
+  }
+
+  /**
+   * Shutdown session and cleanup resources
+   */
+  private async shutdown(): Promise<void> {
+    if (this.debugMode) {
+      console.error('[SessionManager] Shutting down');
+    }
+
+    this.state = SESSION_STATE.SHUTTING_DOWN;
+    this.dispatcher?.shutdown();
+    this.cleanupSignalHandlers();
+  }
+
+  /**
+   * Remove signal handlers to prevent memory leaks
+   */
+  private cleanupSignalHandlers(): void {
+    if (this.shutdownHandler) {
+      process.removeListener('SIGINT', this.shutdownHandler);
+      process.removeListener('SIGTERM', this.shutdownHandler);
+      this.shutdownHandler = null;
+    }
+  }
+}
+
+function extractUserMessageText(message: CLIUserMessage): string | null {
+  const content = message.message.content;
+  if (typeof content === 'string') {
+    return content;
+  }
+
+  if (Array.isArray(content)) {
+    const parts = content
+      .map((block) => {
+        if (!block || typeof block !== 'object') {
+          return '';
+        }
+        if ('type' in block && block.type === 'text' && 'text' in block) {
+          return typeof block.text === 'string' ? block.text : '';
+        }
+        return JSON.stringify(block);
+      })
+      .filter((part) => part.length > 0);
+
+    return parts.length > 0 ? parts.join('\n') : null;
+  }
+
+  return null;
+}
+
+/**
+ * Entry point for stream-json mode
+ *
+ * @param config - Configuration object
+ * @param input - Optional initial prompt input to process before reading from stream
+ */
+export async function runNonInteractiveStreamJson(
+  config: Config,
+  input: string,
+): Promise<void> {
+  const consolePatcher = new ConsolePatcher({
+    debugMode: config.getDebugMode(),
+  });
+  consolePatcher.patch();
+
+  try {
+    // Create initial user message from prompt input if provided
+    let initialPrompt: CLIUserMessage | undefined = undefined;
+    if (input && input.trim().length > 0) {
+      const sessionId = config.getSessionId();
+      initialPrompt = {
+        type: 'user',
+        session_id: sessionId,
+        message: {
+          role: 'user',
+          content: input.trim(),
+        },
+        parent_tool_use_id: null,
+      };
+    }
+
+    const manager = new SessionManager(config, initialPrompt);
+    await manager.run();
+  } finally {
+    consolePatcher.cleanup();
+  }
+}

packages/cli/src/nonInteractive/types.ts

@@ -0,0 +1,509 @@
+/* eslint-disable @typescript-eslint/no-explicit-any */
+
+/**
+ * Annotation for attaching metadata to content blocks
+ */
+export interface Annotation {
+  type: string;
+  value: string;
+}
+
+/**
+ * Usage information types
+ */
+export interface Usage {
+  input_tokens: number;
+  output_tokens: number;
+  cache_creation_input_tokens?: number;
+  cache_read_input_tokens?: number;
+  total_tokens?: number;
+}
+
+export interface ExtendedUsage extends Usage {
+  server_tool_use?: {
+    web_search_requests: number;
+  };
+  service_tier?: string;
+  cache_creation?: {
+    ephemeral_1h_input_tokens: number;
+    ephemeral_5m_input_tokens: number;
+  };
+}
+
+export interface ModelUsage {
+  inputTokens: number;
+  outputTokens: number;
+  cacheReadInputTokens: number;
+  cacheCreationInputTokens: number;
+  webSearchRequests: number;
+  contextWindow: number;
+}
+
+/**
+ * Permission denial information
+ */
+export interface CLIPermissionDenial {
+  tool_name: string;
+  tool_use_id: string;
+  tool_input: unknown;
+}
+
+/**
+ * Content block types from Anthropic SDK
+ */
+export interface TextBlock {
+  type: 'text';
+  text: string;
+  annotations?: Annotation[];
+}
+
+export interface ThinkingBlock {
+  type: 'thinking';
+  thinking: string;
+  signature?: string;
+  annotations?: Annotation[];
+}
+
+export interface ToolUseBlock {
+  type: 'tool_use';
+  id: string;
+  name: string;
+  input: unknown;
+  annotations?: Annotation[];
+}
+
+export interface ToolResultBlock {
+  type: 'tool_result';
+  tool_use_id: string;
+  content?: string | ContentBlock[];
+  is_error?: boolean;
+  annotations?: Annotation[];
+}
+
+export type ContentBlock =
+  | TextBlock
+  | ThinkingBlock
+  | ToolUseBlock
+  | ToolResultBlock;
+
+/**
+ * Anthropic SDK Message types
+ */
+export interface APIUserMessage {
+  role: 'user';
+  content: string | ContentBlock[];
+}
+
+export interface APIAssistantMessage {
+  id: string;
+  type: 'message';
+  role: 'assistant';
+  model: string;
+  content: ContentBlock[];
+  stop_reason?: string | null;
+  usage: Usage;
+}
+
+/**
+ * CLI Message wrapper types
+ */
+export interface CLIUserMessage {
+  type: 'user';
+  uuid?: string;
+  session_id: string;
+  message: APIUserMessage;
+  parent_tool_use_id: string | null;
+  options?: Record<string, unknown>;
+}
+
+export interface CLIAssistantMessage {
+  type: 'assistant';
+  uuid: string;
+  session_id: string;
+  message: APIAssistantMessage;
+  parent_tool_use_id: string | null;
+}
+
+export interface CLISystemMessage {
+  type: 'system';
+  subtype: string;
+  uuid: string;
+  session_id: string;
+  data?: unknown;
+  cwd?: string;
+  tools?: string[];
+  mcp_servers?: Array<{
+    name: string;
+    status: string;
+  }>;
+  model?: string;
+  permissionMode?: string;
+  slash_commands?: string[];
+  apiKeySource?: string;
+  qwen_code_version?: string;
+  output_style?: string;
+  agents?: string[];
+  skills?: string[];
+  capabilities?: Record<string, unknown>;
+  compact_metadata?: {
+    trigger: 'manual' | 'auto';
+    pre_tokens: number;
+  };
+}
+
+export interface CLIResultMessageSuccess {
+  type: 'result';
+  subtype: 'success';
+  uuid: string;
+  session_id: string;
+  is_error: false;
+  duration_ms: number;
+  duration_api_ms: number;
+  num_turns: number;
+  result: string;
+  usage: ExtendedUsage;
+  modelUsage?: Record<string, ModelUsage>;
+  permission_denials: CLIPermissionDenial[];
+  [key: string]: unknown;
+}
+
+export interface CLIResultMessageError {
+  type: 'result';
+  subtype: 'error_max_turns' | 'error_during_execution';
+  uuid: string;
+  session_id: string;
+  is_error: true;
+  duration_ms: number;
+  duration_api_ms: number;
+  num_turns: number;
+  usage: ExtendedUsage;
+  modelUsage?: Record<string, ModelUsage>;
+  permission_denials: CLIPermissionDenial[];
+  error?: {
+    type?: string;
+    message: string;
+    [key: string]: unknown;
+  };
+  [key: string]: unknown;
+}
+
+export type CLIResultMessage = CLIResultMessageSuccess | CLIResultMessageError;
+
+/**
+ * Stream event types for real-time message updates
+ */
+export interface MessageStartStreamEvent {
+  type: 'message_start';
+  message: {
+    id: string;
+    role: 'assistant';
+    model: string;
+  };
+}
+
+export interface ContentBlockStartEvent {
+  type: 'content_block_start';
+  index: number;
+  content_block: ContentBlock;
+}
+
+export type ContentBlockDelta =
+  | {
+      type: 'text_delta';
+      text: string;
+    }
+  | {
+      type: 'thinking_delta';
+      thinking: string;
+    }
+  | {
+      type: 'input_json_delta';
+      partial_json: string;
+    };
+
+export interface ContentBlockDeltaEvent {
+  type: 'content_block_delta';
+  index: number;
+  delta: ContentBlockDelta;
+}
+
+export interface ContentBlockStopEvent {
+  type: 'content_block_stop';
+  index: number;
+}
+
+export interface MessageStopStreamEvent {
+  type: 'message_stop';
+}
+
+export type StreamEvent =
+  | MessageStartStreamEvent
+  | ContentBlockStartEvent
+  | ContentBlockDeltaEvent
+  | ContentBlockStopEvent
+  | MessageStopStreamEvent;
+
+export interface CLIPartialAssistantMessage {
+  type: 'stream_event';
+  uuid: string;
+  session_id: string;
+  event: StreamEvent;
+  parent_tool_use_id: string | null;
+}
+
+export type PermissionMode = 'default' | 'plan' | 'auto-edit' | 'yolo';
+
+/**
+ * Permission suggestion for tool use requests
+ * TODO: Align with `ToolCallConfirmationDetails`
+ */
+export interface PermissionSuggestion {
+  type: 'allow' | 'deny' | 'modify';
+  label: string;
+  description?: string;
+  modifiedInput?: unknown;
+}
+
+/**
+ * Hook callback placeholder for future implementation
+ */
+export interface HookRegistration {
+  event: string;
+  callback_id: string;
+}
+
+/**
+ * Hook callback result placeholder for future implementation
+ */
+export interface HookCallbackResult {
+  shouldSkip?: boolean;
+  shouldInterrupt?: boolean;
+  suppressOutput?: boolean;
+  message?: string;
+}
+
+export interface CLIControlInterruptRequest {
+  subtype: 'interrupt';
+}
+
+export interface CLIControlPermissionRequest {
+  subtype: 'can_use_tool';
+  tool_name: string;
+  tool_use_id: string;
+  input: unknown;
+  permission_suggestions: PermissionSuggestion[] | null;
+  blocked_path: string | null;
+}
+
+export interface CLIControlInitializeRequest {
+  subtype: 'initialize';
+  hooks?: HookRegistration[] | null;
+  sdkMcpServers?: string[];
+}
+
+export interface CLIControlSetPermissionModeRequest {
+  subtype: 'set_permission_mode';
+  mode: PermissionMode;
+}
+
+export interface CLIHookCallbackRequest {
+  subtype: 'hook_callback';
+  callback_id: string;
+  input: unknown;
+  tool_use_id: string | null;
+}
+
+export interface CLIControlMcpMessageRequest {
+  subtype: 'mcp_message';
+  server_name: string;
+  message: {
+    jsonrpc?: string;
+    method: string;
+    params?: Record<string, unknown>;
+    id?: string | number | null;
+  };
+}
+
+export interface CLIControlSetModelRequest {
+  subtype: 'set_model';
+  model: string;
+}
+
+export interface CLIControlMcpStatusRequest {
+  subtype: 'mcp_server_status';
+}
+
+export interface CLIControlSupportedCommandsRequest {
+  subtype: 'supported_commands';
+}
+
+export type ControlRequestPayload =
+  | CLIControlInterruptRequest
+  | CLIControlPermissionRequest
+  | CLIControlInitializeRequest
+  | CLIControlSetPermissionModeRequest
+  | CLIHookCallbackRequest
+  | CLIControlMcpMessageRequest
+  | CLIControlSetModelRequest
+  | CLIControlMcpStatusRequest
+  | CLIControlSupportedCommandsRequest;
+
+export interface CLIControlRequest {
+  type: 'control_request';
+  request_id: string;
+  request: ControlRequestPayload;
+}
+
+/**
+ * Permission approval result
+ */
+export interface PermissionApproval {
+  allowed: boolean;
+  reason?: string;
+  modifiedInput?: unknown;
+}
+
+export interface ControlResponse {
+  subtype: 'success';
+  request_id: string;
+  response: unknown;
+}
+
+export interface ControlErrorResponse {
+  subtype: 'error';
+  request_id: string;
+  error: string | { message: string; [key: string]: unknown };
+}
+
+export interface CLIControlResponse {
+  type: 'control_response';
+  response: ControlResponse | ControlErrorResponse;
+}
+
+export interface ControlCancelRequest {
+  type: 'control_cancel_request';
+  request_id?: string;
+}
+
+export type ControlMessage =
+  | CLIControlRequest
+  | CLIControlResponse
+  | ControlCancelRequest;
+
+/**
+ * Union of all CLI message types
+ */
+export type CLIMessage =
+  | CLIUserMessage
+  | CLIAssistantMessage
+  | CLISystemMessage
+  | CLIResultMessage
+  | CLIPartialAssistantMessage;
+
+/**
+ * Type guard functions for message discrimination
+ */
+
+export function isCLIUserMessage(msg: any): msg is CLIUserMessage {
+  return (
+    msg && typeof msg === 'object' && msg.type === 'user' && 'message' in msg
+  );
+}
+
+export function isCLIAssistantMessage(msg: any): msg is CLIAssistantMessage {
+  return (
+    msg &&
+    typeof msg === 'object' &&
+    msg.type === 'assistant' &&
+    'uuid' in msg &&
+    'message' in msg &&
+    'session_id' in msg &&
+    'parent_tool_use_id' in msg
+  );
+}
+
+export function isCLISystemMessage(msg: any): msg is CLISystemMessage {
+  return (
+    msg &&
+    typeof msg === 'object' &&
+    msg.type === 'system' &&
+    'subtype' in msg &&
+    'uuid' in msg &&
+    'session_id' in msg
+  );
+}
+
+export function isCLIResultMessage(msg: any): msg is CLIResultMessage {
+  return (
+    msg &&
+    typeof msg === 'object' &&
+    msg.type === 'result' &&
+    'subtype' in msg &&
+    'duration_ms' in msg &&
+    'is_error' in msg &&
+    'uuid' in msg &&
+    'session_id' in msg
+  );
+}
+
+export function isCLIPartialAssistantMessage(
+  msg: any,
+): msg is CLIPartialAssistantMessage {
+  return (
+    msg &&
+    typeof msg === 'object' &&
+    msg.type === 'stream_event' &&
+    'uuid' in msg &&
+    'session_id' in msg &&
+    'event' in msg &&
+    'parent_tool_use_id' in msg
+  );
+}
+
+export function isControlRequest(msg: any): msg is CLIControlRequest {
+  return (
+    msg &&
+    typeof msg === 'object' &&
+    msg.type === 'control_request' &&
+    'request_id' in msg &&
+    'request' in msg
+  );
+}
+
+export function isControlResponse(msg: any): msg is CLIControlResponse {
+  return (
+    msg &&
+    typeof msg === 'object' &&
+    msg.type === 'control_response' &&
+    'response' in msg
+  );
+}
+
+export function isControlCancel(msg: any): msg is ControlCancelRequest {
+  return (
+    msg &&
+    typeof msg === 'object' &&
+    msg.type === 'control_cancel_request' &&
+    'request_id' in msg
+  );
+}
+
+/**
+ * Content block type guards
+ */
+
+export function isTextBlock(block: any): block is TextBlock {
+  return block && typeof block === 'object' && block.type === 'text';
+}
+
+export function isThinkingBlock(block: any): block is ThinkingBlock {
+  return block && typeof block === 'object' && block.type === 'thinking';
+}
+
+export function isToolUseBlock(block: any): block is ToolUseBlock {
+  return block && typeof block === 'object' && block.type === 'tool_use';
+}
+
+export function isToolResultBlock(block: any): block is ToolResultBlock {
+  return block && typeof block === 'object' && block.type === 'tool_result';
+}

packages/cli/src/nonInteractiveCli.ts

@@ -15,14 +15,16 @@ import {
   FatalInputError,
   promptIdContext,
   OutputFormat,
-  JsonFormatter,
   uiTelemetryService,
 } from '@qwen-code/qwen-code-core';
-
-import type { Content, Part } from '@google/genai';
+import type { Content, Part, PartListUnion } from '@google/genai';
+import type { CLIUserMessage, PermissionMode } from './nonInteractive/types.js';
+import type { JsonOutputAdapterInterface } from './nonInteractive/io/BaseJsonOutputAdapter.js';
+import { JsonOutputAdapter } from './nonInteractive/io/JsonOutputAdapter.js';
+import { StreamJsonOutputAdapter } from './nonInteractive/io/StreamJsonOutputAdapter.js';
+import type { ControlService } from './nonInteractive/control/ControlService.js';
 
 import { handleSlashCommand } from './nonInteractiveCliCommands.js';
-import { ConsolePatcher } from './ui/utils/ConsolePatcher.js';
 import { handleAtCommand } from './ui/hooks/atCommandProcessor.js';
 import {
   handleError,
@@ -30,73 +32,144 @@ import {
   handleCancellationError,
   handleMaxTurnsExceededError,
 } from './utils/errors.js';
+import {
+  normalizePartList,
+  extractPartsFromUserMessage,
+  buildSystemMessage,
+  createTaskToolProgressHandler,
+  computeUsageFromMetrics,
+} from './utils/nonInteractiveHelpers.js';
 
+/**
+ * Provides optional overrides for `runNonInteractive` execution.
+ *
+ * @param abortController - Optional abort controller for cancellation.
+ * @param adapter - Optional JSON output adapter for structured output formats.
+ * @param userMessage - Optional CLI user message payload for preformatted input.
+ * @param controlService - Optional control service for future permission handling.
+ */
+export interface RunNonInteractiveOptions {
+  abortController?: AbortController;
+  adapter?: JsonOutputAdapterInterface;
+  userMessage?: CLIUserMessage;
+  controlService?: ControlService;
+}
+
+/**
+ * Executes the non-interactive CLI flow for a single request.
+ */
 export async function runNonInteractive(
   config: Config,
   settings: LoadedSettings,
   input: string,
   prompt_id: string,
+  options: RunNonInteractiveOptions = {},
 ): Promise<void> {
   return promptIdContext.run(prompt_id, async () => {
-    const consolePatcher = new ConsolePatcher({
-      stderr: true,
-      debugMode: config.getDebugMode(),
-    });
+    // Create output adapter based on format
+    let adapter: JsonOutputAdapterInterface | undefined;
+    const outputFormat = config.getOutputFormat();
+
+    if (options.adapter) {
+      adapter = options.adapter;
+    } else if (outputFormat === OutputFormat.JSON) {
+      adapter = new JsonOutputAdapter(config);
+    } else if (outputFormat === OutputFormat.STREAM_JSON) {
+      adapter = new StreamJsonOutputAdapter(
+        config,
+        config.getIncludePartialMessages(),
+      );
+    }
+
+    // Get readonly values once at the start
+    const sessionId = config.getSessionId();
+    const permissionMode = config.getApprovalMode() as PermissionMode;
+
+    let turnCount = 0;
+    let totalApiDurationMs = 0;
+    const startTime = Date.now();
+
+    const stdoutErrorHandler = (err: NodeJS.ErrnoException) => {
+      if (err.code === 'EPIPE') {
+        process.stdout.removeListener('error', stdoutErrorHandler);
+        process.exit(0);
+      }
+    };
+
+    const geminiClient = config.getGeminiClient();
+    const abortController = options.abortController ?? new AbortController();
+
+    // Setup signal handlers for graceful shutdown
+    const shutdownHandler = () => {
+      if (config.getDebugMode()) {
+        console.error('[runNonInteractive] Shutdown signal received');
+      }
+      abortController.abort();
+    };
 
     try {
-      consolePatcher.patch();
-      // Handle EPIPE errors when the output is piped to a command that closes early.
-      process.stdout.on('error', (err: NodeJS.ErrnoException) => {
-        if (err.code === 'EPIPE') {
-          // Exit gracefully if the pipe is closed.
-          process.exit(0);
-        }
-      });
+      process.stdout.on('error', stdoutErrorHandler);
 
-      const geminiClient = config.getGeminiClient();
+      process.on('SIGINT', shutdownHandler);
+      process.on('SIGTERM', shutdownHandler);
 
-      const abortController = new AbortController();
+      let initialPartList: PartListUnion | null = extractPartsFromUserMessage(
+        options.userMessage,
+      );
 
-      let query: Part[] | undefined;
-
-      if (isSlashCommand(input)) {
-        const slashCommandResult = await handleSlashCommand(
-          input,
-          abortController,
-          config,
-          settings,
-        );
-        // If a slash command is found and returns a prompt, use it.
-        // Otherwise, slashCommandResult fall through to the default prompt
-        // handling.
-        if (slashCommandResult) {
-          query = slashCommandResult as Part[];
-        }
-      }
-
-      if (!query) {
-        const { processedQuery, shouldProceed } = await handleAtCommand({
-          query: input,
-          config,
-          addItem: (_item, _timestamp) => 0,
-          onDebugMessage: () => {},
-          messageId: Date.now(),
-          signal: abortController.signal,
-        });
-
-        if (!shouldProceed || !processedQuery) {
-          // An error occurred during @include processing (e.g., file not found).
-          // The error message is already logged by handleAtCommand.
-          throw new FatalInputError(
-            'Exiting due to an error processing the @ command.',
+      if (!initialPartList) {
+        let slashHandled = false;
+        if (isSlashCommand(input)) {
+          const slashCommandResult = await handleSlashCommand(
+            input,
+            abortController,
+            config,
+            settings,
           );
+          if (slashCommandResult) {
+            // A slash command can replace the prompt entirely; fall back to @-command processing otherwise.
+            initialPartList = slashCommandResult as PartListUnion;
+            slashHandled = true;
+          }
+        }
+
+        if (!slashHandled) {
+          const { processedQuery, shouldProceed } = await handleAtCommand({
+            query: input,
+            config,
+            addItem: (_item, _timestamp) => 0,
+            onDebugMessage: () => {},
+            messageId: Date.now(),
+            signal: abortController.signal,
+          });
+
+          if (!shouldProceed || !processedQuery) {
+            // An error occurred during @include processing (e.g., file not found).
+            // The error message is already logged by handleAtCommand.
+            throw new FatalInputError(
+              'Exiting due to an error processing the @ command.',
+            );
+          }
+          initialPartList = processedQuery as PartListUnion;
         }
-        query = processedQuery as Part[];
       }
 
-      let currentMessages: Content[] = [{ role: 'user', parts: query }];
+      if (!initialPartList) {
+        initialPartList = [{ text: input }];
+      }
+
+      const initialParts = normalizePartList(initialPartList);
+      let currentMessages: Content[] = [{ role: 'user', parts: initialParts }];
+
+      if (adapter) {
+        const systemMessage = await buildSystemMessage(
+          config,
+          sessionId,
+          permissionMode,
+        );
+        adapter.emitMessage(systemMessage);
+      }
 
-      let turnCount = 0;
       while (true) {
         turnCount++;
         if (
@@ -105,43 +178,124 @@ export async function runNonInteractive(
         ) {
           handleMaxTurnsExceededError(config);
         }
-        const toolCallRequests: ToolCallRequestInfo[] = [];
 
+        const toolCallRequests: ToolCallRequestInfo[] = [];
+        const apiStartTime = Date.now();
         const responseStream = geminiClient.sendMessageStream(
           currentMessages[0]?.parts || [],
           abortController.signal,
           prompt_id,
         );
 
-        let responseText = '';
+        // Start assistant message for this turn
+        if (adapter) {
+          adapter.startAssistantMessage();
+        }
+
         for await (const event of responseStream) {
           if (abortController.signal.aborted) {
             handleCancellationError(config);
           }
 
-          if (event.type === GeminiEventType.Content) {
-            if (config.getOutputFormat() === OutputFormat.JSON) {
-              responseText += event.value;
-            } else {
-              process.stdout.write(event.value);
+          if (adapter) {
+            // Use adapter for all event processing
+            adapter.processEvent(event);
+            if (event.type === GeminiEventType.ToolCallRequest) {
+              toolCallRequests.push(event.value);
+            }
+          } else {
+            // Text output mode - direct stdout
+            if (event.type === GeminiEventType.Content) {
+              process.stdout.write(event.value);
+            } else if (event.type === GeminiEventType.ToolCallRequest) {
+              toolCallRequests.push(event.value);
             }
-          } else if (event.type === GeminiEventType.ToolCallRequest) {
-            toolCallRequests.push(event.value);
           }
         }
 
+        // Finalize assistant message
+        if (adapter) {
+          adapter.finalizeAssistantMessage();
+        }
+        totalApiDurationMs += Date.now() - apiStartTime;
+
         if (toolCallRequests.length > 0) {
           const toolResponseParts: Part[] = [];
+
           for (const requestInfo of toolCallRequests) {
+            const finalRequestInfo = requestInfo;
+
+            /*
+            if (options.controlService) {
+              const permissionResult =
+                await options.controlService.permission.shouldAllowTool(
+                  requestInfo,
+                );
+              if (!permissionResult.allowed) {
+                if (config.getDebugMode()) {
+                  console.error(
+                    `[runNonInteractive] Tool execution denied: ${requestInfo.name}`,
+                    permissionResult.message ?? '',
+                  );
+                }
+                if (adapter && permissionResult.message) {
+                  adapter.emitSystemMessage('tool_denied', {
+                    tool: requestInfo.name,
+                    message: permissionResult.message,
+                  });
+                }
+                continue;
+              }
+
+              if (permissionResult.updatedArgs) {
+                finalRequestInfo = {
+                  ...requestInfo,
+                  args: permissionResult.updatedArgs,
+                };
+              }
+            }
+
+            const toolCallUpdateCallback = options.controlService
+              ? options.controlService.permission.getToolCallUpdateCallback()
+              : undefined;
+            */
+
+            // Only pass outputUpdateHandler for Task tool
+            const isTaskTool = finalRequestInfo.name === 'task';
+            const taskToolProgress = isTaskTool
+              ? createTaskToolProgressHandler(
+                  config,
+                  finalRequestInfo.callId,
+                  adapter,
+                )
+              : undefined;
+            const taskToolProgressHandler = taskToolProgress?.handler;
             const toolResponse = await executeToolCall(
               config,
-              requestInfo,
+              finalRequestInfo,
               abortController.signal,
+              isTaskTool && taskToolProgressHandler
+                ? {
+                    outputUpdateHandler: taskToolProgressHandler,
+                    /*
+                    toolCallUpdateCallback
+                      ? { onToolCallsUpdate: toolCallUpdateCallback }
+                      : undefined,
+                    */
+                  }
+                : undefined,
             );
 
+            // Note: In JSON mode, subagent messages are automatically added to the main
+            // adapter's messages array and will be output together on emitResult()
+
             if (toolResponse.error) {
+              // In JSON/STREAM_JSON mode, tool errors are tolerated and formatted
+              // as tool_result blocks. handleToolError will detect JSON/STREAM_JSON mode
+              // from config and allow the session to continue so the LLM can decide what to do next.
+              // In text mode, we still log the error.
               handleToolError(
-                requestInfo.name,
+                finalRequestInfo.name,
                 toolResponse.error,
                 config,
                 toolResponse.errorType || 'TOOL_EXECUTION_ERROR',
@@ -149,6 +303,13 @@ export async function runNonInteractive(
                   ? toolResponse.resultDisplay
                   : undefined,
               );
+              // Note: We no longer emit a separate system message for tool errors
+              // in JSON/STREAM_JSON mode, as the error is already captured in the
+              // tool_result block with is_error=true.
+            }
+
+            if (adapter) {
+              adapter.emitToolResult(finalRequestInfo, toolResponse);
             }
 
             if (toolResponse.responseParts) {
@@ -157,20 +318,57 @@ export async function runNonInteractive(
           }
           currentMessages = [{ role: 'user', parts: toolResponseParts }];
         } else {
-          if (config.getOutputFormat() === OutputFormat.JSON) {
-            const formatter = new JsonFormatter();
-            const stats = uiTelemetryService.getMetrics();
-            process.stdout.write(formatter.format(responseText, stats));
+          // For JSON and STREAM_JSON modes, compute usage from metrics
+          if (adapter) {
+            const metrics = uiTelemetryService.getMetrics();
+            const usage = computeUsageFromMetrics(metrics);
+            // Get stats for JSON format output
+            const stats =
+              outputFormat === OutputFormat.JSON
+                ? uiTelemetryService.getMetrics()
+                : undefined;
+            adapter.emitResult({
+              isError: false,
+              durationMs: Date.now() - startTime,
+              apiDurationMs: totalApiDurationMs,
+              numTurns: turnCount,
+              usage,
+              stats,
+            });
           } else {
-            process.stdout.write('\n'); // Ensure a final newline
+            // Text output mode - no usage needed
+            process.stdout.write('\n');
           }
           return;
         }
       }
     } catch (error) {
+      // For JSON and STREAM_JSON modes, compute usage from metrics
+      const message = error instanceof Error ? error.message : String(error);
+      if (adapter) {
+        const metrics = uiTelemetryService.getMetrics();
+        const usage = computeUsageFromMetrics(metrics);
+        // Get stats for JSON format output
+        const stats =
+          outputFormat === OutputFormat.JSON
+            ? uiTelemetryService.getMetrics()
+            : undefined;
+        adapter.emitResult({
+          isError: true,
+          durationMs: Date.now() - startTime,
+          apiDurationMs: totalApiDurationMs,
+          numTurns: turnCount,
+          errorMessage: message,
+          usage,
+          stats,
+        });
+      }
       handleError(error, config);
     } finally {
-      consolePatcher.cleanup();
+      process.stdout.removeListener('error', stdoutErrorHandler);
+      // Cleanup signal handlers
+      process.removeListener('SIGINT', shutdownHandler);
+      process.removeListener('SIGTERM', shutdownHandler);
       if (isTelemetrySdkInitialized()) {
         await shutdownTelemetry(config);
       }

packages/cli/src/nonInteractiveCliCommands.ts

@@ -13,15 +13,56 @@ import {
   type Config,
 } from '@qwen-code/qwen-code-core';
 import { CommandService } from './services/CommandService.js';
+import { BuiltinCommandLoader } from './services/BuiltinCommandLoader.js';
 import { FileCommandLoader } from './services/FileCommandLoader.js';
-import type { CommandContext } from './ui/commands/types.js';
+import {
+  CommandKind,
+  type CommandContext,
+  type SlashCommand,
+} from './ui/commands/types.js';
 import { createNonInteractiveUI } from './ui/noninteractive/nonInteractiveUi.js';
 import type { LoadedSettings } from './config/settings.js';
 import type { SessionStatsState } from './ui/contexts/SessionContext.js';
 
+/**
+ * Filters commands based on the allowed built-in command names.
+ *
+ * - Always includes FILE commands
+ * - Only includes BUILT_IN commands if their name is in the allowed set
+ * - Excludes other command types (e.g., MCP_PROMPT) in non-interactive mode
+ *
+ * @param commands All loaded commands
+ * @param allowedBuiltinCommandNames Set of allowed built-in command names (empty = none allowed)
+ * @returns Filtered commands
+ */
+function filterCommandsForNonInteractive(
+  commands: readonly SlashCommand[],
+  allowedBuiltinCommandNames: Set<string>,
+): SlashCommand[] {
+  return commands.filter((cmd) => {
+    if (cmd.kind === CommandKind.FILE) {
+      return true;
+    }
+
+    // Built-in commands: only include if in the allowed list
+    if (cmd.kind === CommandKind.BUILT_IN) {
+      return allowedBuiltinCommandNames.has(cmd.name);
+    }
+
+    // Exclude other types (e.g., MCP_PROMPT) in non-interactive mode
+    return false;
+  });
+}
+
 /**
  * Processes a slash command in a non-interactive environment.
  *
+ * @param rawQuery The raw query string (should start with '/')
+ * @param abortController Controller to cancel the operation
+ * @param config The configuration object
+ * @param settings The loaded settings
+ * @param allowedBuiltinCommandNames Optional array of built-in command names that are
+ *   allowed. If not provided or empty, only file commands are available.
  * @returns A Promise that resolves to `PartListUnion` if a valid command is
  *   found and results in a prompt, or `undefined` otherwise.
  * @throws {FatalInputError} if the command result is not supported in
@@ -32,21 +73,35 @@ export const handleSlashCommand = async (
   abortController: AbortController,
   config: Config,
   settings: LoadedSettings,
+  allowedBuiltinCommandNames?: string[],
 ): Promise<PartListUnion | undefined> => {
   const trimmed = rawQuery.trim();
   if (!trimmed.startsWith('/')) {
     return;
   }
 
-  // Only custom commands are supported for now.
-  const loaders = [new FileCommandLoader(config)];
+  const allowedBuiltinSet = new Set(allowedBuiltinCommandNames ?? []);
+
+  // Only load BuiltinCommandLoader if there are allowed built-in commands
+  const loaders =
+    allowedBuiltinSet.size > 0
+      ? [new BuiltinCommandLoader(config), new FileCommandLoader(config)]
+      : [new FileCommandLoader(config)];
+
   const commandService = await CommandService.create(
     loaders,
     abortController.signal,
   );
   const commands = commandService.getCommands();
+  const filteredCommands = filterCommandsForNonInteractive(
+    commands,
+    allowedBuiltinSet,
+  );
 
-  const { commandToExecute, args } = parseSlashCommand(rawQuery, commands);
+  const { commandToExecute, args } = parseSlashCommand(
+    rawQuery,
+    filteredCommands,
+  );
 
   if (commandToExecute) {
     if (commandToExecute.action) {
@@ -107,3 +162,44 @@ export const handleSlashCommand = async (
 
   return;
 };
+
+/**
+ * Retrieves all available slash commands for the current configuration.
+ *
+ * @param config The configuration object
+ * @param settings The loaded settings
+ * @param abortSignal Signal to cancel the loading process
+ * @param allowedBuiltinCommandNames Optional array of built-in command names that are
+ *   allowed. If not provided or empty, only file commands are available.
+ * @returns A Promise that resolves to an array of SlashCommand objects
+ */
+export const getAvailableCommands = async (
+  config: Config,
+  settings: LoadedSettings,
+  abortSignal: AbortSignal,
+  allowedBuiltinCommandNames?: string[],
+): Promise<SlashCommand[]> => {
+  try {
+    const allowedBuiltinSet = new Set(allowedBuiltinCommandNames ?? []);
+
+    // Only load BuiltinCommandLoader if there are allowed built-in commands
+    const loaders =
+      allowedBuiltinSet.size > 0
+        ? [new BuiltinCommandLoader(config), new FileCommandLoader(config)]
+        : [new FileCommandLoader(config)];
+
+    const commandService = await CommandService.create(loaders, abortSignal);
+    const commands = commandService.getCommands();
+    const filteredCommands = filterCommandsForNonInteractive(
+      commands,
+      allowedBuiltinSet,
+    );
+
+    // Filter out hidden commands
+    return filteredCommands.filter((cmd) => !cmd.hidden);
+  } catch (error) {
+    // Handle errors gracefully - log and return empty array
+    console.error('Error loading available commands:', error);
+    return [];
+  }
+};

packages/cli/src/services/BuiltinCommandLoader.test.ts

@@ -56,7 +56,6 @@ import { restoreCommand } from '../ui/commands/restoreCommand.js';
 
 vi.mock('../ui/commands/authCommand.js', () => ({ authCommand: {} }));
 vi.mock('../ui/commands/bugCommand.js', () => ({ bugCommand: {} }));
-vi.mock('../ui/commands/chatCommand.js', () => ({ chatCommand: {} }));
 vi.mock('../ui/commands/clearCommand.js', () => ({ clearCommand: {} }));
 vi.mock('../ui/commands/compressCommand.js', () => ({ compressCommand: {} }));
 vi.mock('../ui/commands/corgiCommand.js', () => ({ corgiCommand: {} }));

packages/cli/src/services/BuiltinCommandLoader.ts

@@ -12,7 +12,6 @@ import { agentsCommand } from '../ui/commands/agentsCommand.js';
 import { approvalModeCommand } from '../ui/commands/approvalModeCommand.js';
 import { authCommand } from '../ui/commands/authCommand.js';
 import { bugCommand } from '../ui/commands/bugCommand.js';
-import { chatCommand } from '../ui/commands/chatCommand.js';
 import { clearCommand } from '../ui/commands/clearCommand.js';
 import { compressCommand } from '../ui/commands/compressCommand.js';
 import { copyCommand } from '../ui/commands/copyCommand.js';
@@ -24,6 +23,7 @@ import { extensionsCommand } from '../ui/commands/extensionsCommand.js';
 import { helpCommand } from '../ui/commands/helpCommand.js';
 import { ideCommand } from '../ui/commands/ideCommand.js';
 import { initCommand } from '../ui/commands/initCommand.js';
+import { languageCommand } from '../ui/commands/languageCommand.js';
 import { mcpCommand } from '../ui/commands/mcpCommand.js';
 import { memoryCommand } from '../ui/commands/memoryCommand.js';
 import { modelCommand } from '../ui/commands/modelCommand.js';
@@ -60,7 +60,6 @@ export class BuiltinCommandLoader implements ICommandLoader {
       approvalModeCommand,
       authCommand,
       bugCommand,
-      chatCommand,
       clearCommand,
       compressCommand,
       copyCommand,
@@ -72,6 +71,7 @@ export class BuiltinCommandLoader implements ICommandLoader {
       helpCommand,
       await ideCommand(),
       initCommand,
+      languageCommand,
       mcpCommand,
       memoryCommand,
       modelCommand,

packages/cli/src/services/FileCommandLoader.test.ts

@@ -1227,4 +1227,28 @@ describe('FileCommandLoader', () => {
       expect(commands).toHaveLength(0);
     });
   });
+
+  describe('AbortError handling', () => {
+    it('should silently ignore AbortError when operation is cancelled', async () => {
+      const userCommandsDir = Storage.getUserCommandsDir();
+      mock({
+        [userCommandsDir]: {
+          'test1.toml': 'prompt = "Prompt 1"',
+          'test2.toml': 'prompt = "Prompt 2"',
+        },
+      });
+
+      const loader = new FileCommandLoader(null);
+      const controller = new AbortController();
+      const signal = controller.signal;
+
+      // Start loading and immediately abort
+      const loadPromise = loader.loadCommands(signal);
+      controller.abort();
+
+      // Should not throw or print errors
+      const commands = await loadPromise;
+      expect(commands).toHaveLength(0);
+    });
+  });
 });

packages/cli/src/services/FileCommandLoader.ts

@@ -120,7 +120,11 @@ export class FileCommandLoader implements ICommandLoader {
         // Add all commands without deduplication
         allCommands.push(...commands);
       } catch (error) {
-        if ((error as NodeJS.ErrnoException).code !== 'ENOENT') {
+        // Ignore ENOENT (directory doesn't exist) and AbortError (operation was cancelled)
+        const isEnoent = (error as NodeJS.ErrnoException).code === 'ENOENT';
+        const isAbortError =
+          error instanceof Error && error.name === 'AbortError';
+        if (!isEnoent && !isAbortError) {
           console.error(
             `[FileCommandLoader] Error loading commands from ${dirInfo.path}:`,
             error,

packages/cli/src/test-utils/mockCommandContext.ts

@@ -9,6 +9,7 @@ import type { CommandContext } from '../ui/commands/types.js';
 import type { LoadedSettings } from '../config/settings.js';
 import type { GitService } from '@qwen-code/qwen-code-core';
 import type { SessionStatsState } from '../ui/contexts/SessionContext.js';
+import { ToolCallDecision } from '../ui/contexts/SessionContext.js';
 
 // A utility type to make all properties of an object, and its nested objects, partial.
 type DeepPartial<T> = T extends object
@@ -63,7 +64,9 @@ export const createMockCommandContext = (
     } as any,
     session: {
       sessionShellAllowlist: new Set<string>(),
+      startNewSession: vi.fn(),
       stats: {
+        sessionId: '',
         sessionStartTime: new Date(),
         lastPromptTokenCount: 0,
         metrics: {
@@ -73,9 +76,15 @@ export const createMockCommandContext = (
             totalSuccess: 0,
             totalFail: 0,
             totalDurationMs: 0,
-            totalDecisions: { accept: 0, reject: 0, modify: 0 },
+            totalDecisions: {
+              [ToolCallDecision.ACCEPT]: 0,
+              [ToolCallDecision.REJECT]: 0,
+              [ToolCallDecision.MODIFY]: 0,
+              [ToolCallDecision.AUTO_ACCEPT]: 0,
+            },
             byName: {},
           },
+          files: { totalLinesAdded: 0, totalLinesRemoved: 0 },
         },
         promptCount: 0,
       } as SessionStatsState,

packages/cli/src/ui/AppContainer.tsx

@@ -25,7 +25,6 @@ import {
   type HistoryItem,
   ToolCallStatus,
   type HistoryItemWithoutId,
-  AuthState,
 } from './types.js';
 import { MessageType, StreamingState } from './types.js';
 import {
@@ -41,6 +40,7 @@ import {
   getAllGeminiMdFilenames,
   ShellExecutionService,
 } from '@qwen-code/qwen-code-core';
+import { buildResumedHistoryItems } from './utils/resumeHistoryUtils.js';
 import { validateAuthMethod } from '../config/auth.js';
 import { loadHierarchicalGeminiMemory } from '../config/config.js';
 import process from 'node:process';
@@ -48,11 +48,11 @@ import { useHistory } from './hooks/useHistoryManager.js';
 import { useMemoryMonitor } from './hooks/useMemoryMonitor.js';
 import { useThemeCommand } from './hooks/useThemeCommand.js';
 import { useAuthCommand } from './auth/useAuth.js';
-import { useQwenAuth } from './hooks/useQwenAuth.js';
 import { useQuotaAndFallback } from './hooks/useQuotaAndFallback.js';
 import { useEditorSettings } from './hooks/useEditorSettings.js';
 import { useSettingsCommand } from './hooks/useSettingsCommand.js';
 import { useModelCommand } from './hooks/useModelCommand.js';
+import { useApprovalModeCommand } from './hooks/useApprovalModeCommand.js';
 import { useSlashCommandProcessor } from './hooks/slashCommandProcessor.js';
 import { useVimMode } from './contexts/VimModeContext.js';
 import { useConsoleMessages } from './hooks/useConsoleMessages.js';
@@ -90,12 +90,15 @@ import { useGitBranchName } from './hooks/useGitBranchName.js';
 import { useExtensionUpdates } from './hooks/useExtensionUpdates.js';
 import { ShellFocusContext } from './contexts/ShellFocusContext.js';
 import { useQuitConfirmation } from './hooks/useQuitConfirmation.js';
+import { t } from '../i18n/index.js';
 import { useWelcomeBack } from './hooks/useWelcomeBack.js';
 import { useDialogClose } from './hooks/useDialogClose.js';
+import { useInitializationAuthError } from './hooks/useInitializationAuthError.js';
 import { type VisionSwitchOutcome } from './components/ModelSwitchDialog.js';
 import { processVisionSwitchOutcome } from './hooks/useVisionAutoSwitch.js';
 import { useSubagentCreateDialog } from './hooks/useSubagentCreateDialog.js';
 import { useAgentsManagerDialog } from './hooks/useAgentsManagerDialog.js';
+import { useAttentionNotifications } from './hooks/useAttentionNotifications.js';
 
 const CTRL_EXIT_PROMPT_DURATION_MS = 1000;
 
@@ -194,7 +197,6 @@ export const AppContainer = (props: AppContainerProps) => {
 
   const [isConfigInitialized, setConfigInitialized] = useState(false);
 
-  const logger = useLogger(config.storage);
   const [userMessages, setUserMessages] = useState<string[]>([]);
 
   // Terminal and layout hooks
@@ -204,6 +206,7 @@ export const AppContainer = (props: AppContainerProps) => {
 
   // Additional hooks moved from App.tsx
   const { stats: sessionStats } = useSessionStats();
+  const logger = useLogger(config.storage, sessionStats.sessionId);
   const branchName = useGitBranchName(config.getTargetDir());
 
   // Layout measurements
@@ -214,17 +217,28 @@ export const AppContainer = (props: AppContainerProps) => {
   const lastTitleRef = useRef<string | null>(null);
   const staticExtraHeight = 3;
 
+  // Initialize config (runs once on mount)
   useEffect(() => {
     (async () => {
       // Note: the program will not work if this fails so let errors be
       // handled by the global catch.
       await config.initialize();
       setConfigInitialized(true);
+
+      const resumedSessionData = config.getResumedSessionData();
+      if (resumedSessionData) {
+        const historyItems = buildResumedHistoryItems(
+          resumedSessionData,
+          config,
+        );
+        historyManager.loadHistory(historyItems);
+      }
     })();
     registerCleanup(async () => {
       const ideClient = await IdeClient.getInstance();
       await ideClient.disconnect();
     });
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [config]);
 
   useEffect(
@@ -335,25 +349,24 @@ export const AppContainer = (props: AppContainerProps) => {
     initializationResult.themeError,
   );
 
+  const {
+    isApprovalModeDialogOpen,
+    openApprovalModeDialog,
+    handleApprovalModeSelect,
+  } = useApprovalModeCommand(settings, config);
+
   const {
     setAuthState,
     authError,
     onAuthError,
     isAuthDialogOpen,
     isAuthenticating,
+    pendingAuthType,
+    qwenAuthState,
     handleAuthSelect,
     openAuthDialog,
-  } = useAuthCommand(settings, config);
-
-  // Qwen OAuth authentication state
-  const {
-    isQwenAuth,
-    isQwenAuthenticating,
-    deviceAuth,
-    authStatus,
-    authMessage,
-    cancelQwenAuth,
-  } = useQwenAuth(settings, isAuthenticating);
+    cancelAuthentication,
+  } = useAuthCommand(settings, config, historyManager.addItem);
 
   const { proQuotaRequest, handleProQuotaChoice } = useQuotaAndFallback({
     config,
@@ -363,19 +376,7 @@ export const AppContainer = (props: AppContainerProps) => {
     setModelSwitchedFromQuotaError,
   });
 
-  // Handle Qwen OAuth timeout
-  const handleQwenAuthTimeout = useCallback(() => {
-    onAuthError('Qwen OAuth authentication timed out. Please try again.');
-    cancelQwenAuth();
-    setAuthState(AuthState.Updating);
-  }, [onAuthError, cancelQwenAuth, setAuthState]);
-
-  // Handle Qwen OAuth cancel
-  const handleQwenAuthCancel = useCallback(() => {
-    onAuthError('Qwen OAuth authentication cancelled.');
-    cancelQwenAuth();
-    setAuthState(AuthState.Updating);
-  }, [onAuthError, cancelQwenAuth, setAuthState]);
+  useInitializationAuthError(initializationResult.authError, onAuthError);
 
   // Sync user tier from config when authentication changes
   // TODO: Implement getUserTier() method on Config if needed
@@ -387,6 +388,8 @@ export const AppContainer = (props: AppContainerProps) => {
 
   // Check for enforced auth type mismatch
   useEffect(() => {
+    // Check for initialization error first
+
     if (
       settings.merged.security?.auth?.enforcedType &&
       settings.merged.security?.auth.selectedType &&
@@ -394,7 +397,13 @@ export const AppContainer = (props: AppContainerProps) => {
         settings.merged.security?.auth.selectedType
     ) {
       onAuthError(
-        `Authentication is enforced to be ${settings.merged.security?.auth.enforcedType}, but you are currently using ${settings.merged.security?.auth.selectedType}.`,
+        t(
+          'Authentication is enforced to be {{enforcedType}}, but you are currently using {{currentType}}.',
+          {
+            enforcedType: settings.merged.security?.auth.enforcedType,
+            currentType: settings.merged.security?.auth.selectedType,
+          },
+        ),
       );
     } else if (
       settings.merged.security?.auth?.selectedType &&
@@ -470,6 +479,7 @@ export const AppContainer = (props: AppContainerProps) => {
       openSettingsDialog,
       openModelDialog,
       openPermissionsDialog,
+      openApprovalModeDialog,
       quit: (messages: HistoryItem[]) => {
         setQuittingMessages(messages);
         setTimeout(async () => {
@@ -495,6 +505,7 @@ export const AppContainer = (props: AppContainerProps) => {
       setCorgiMode,
       dispatchExtensionStateUpdate,
       openPermissionsDialog,
+      openApprovalModeDialog,
       addConfirmUpdateExtensionRequest,
       showQuitConfirmation,
       openSubagentCreateDialog,
@@ -523,6 +534,7 @@ export const AppContainer = (props: AppContainerProps) => {
     slashCommandActions,
     extensionsUpdateStateInternal,
     isConfigInitialized,
+    logger,
   );
 
   // Vision switch handlers
@@ -551,11 +563,16 @@ export const AppContainer = (props: AppContainerProps) => {
     [visionSwitchResolver],
   );
 
+  // onDebugMessage should log to console, not update footer debugMessage
+  const onDebugMessage = useCallback((message: string) => {
+    console.debug(message);
+  }, []);
+
   const performMemoryRefresh = useCallback(async () => {
     historyManager.addItem(
       {
         type: MessageType.INFO,
-        text: 'Refreshing hierarchical memory (GEMINI.md or other context files)...',
+        text: 'Refreshing hierarchical memory (QWEN.md or other context files)...',
       },
       Date.now(),
     );
@@ -628,7 +645,7 @@ export const AppContainer = (props: AppContainerProps) => {
     historyManager.addItem,
     config,
     settings,
-    setDebugMessage,
+    onDebugMessage,
     handleSlashCommand,
     shellModeActive,
     () => settings.merged.general?.preferredEditor as EditorType,
@@ -916,17 +933,9 @@ export const AppContainer = (props: AppContainerProps) => {
     (result: IdeIntegrationNudgeResult) => {
       if (result.userSelection === 'yes') {
         handleSlashCommand('/ide install');
-        settings.setValue(
-          SettingScope.User,
-          'hasSeenIdeIntegrationNudge',
-          true,
-        );
+        settings.setValue(SettingScope.User, 'ide.hasSeenNudge', true);
       } else if (result.userSelection === 'dismiss') {
-        settings.setValue(
-          SettingScope.User,
-          'hasSeenIdeIntegrationNudge',
-          true,
-        );
+        settings.setValue(SettingScope.User, 'ide.hasSeenNudge', true);
       }
       setIdePromptAnswered(true);
     },
@@ -938,13 +947,21 @@ export const AppContainer = (props: AppContainerProps) => {
     settings.merged.ui?.customWittyPhrases,
   );
 
+  useAttentionNotifications({
+    isFocused,
+    streamingState,
+    elapsedTime,
+  });
+
   // Dialog close functionality
   const { closeAnyOpenDialog } = useDialogClose({
     isThemeDialogOpen,
     handleThemeSelect,
+    isApprovalModeDialogOpen,
+    handleApprovalModeSelect,
     isAuthDialogOpen,
     handleAuthSelect,
-    selectedAuthType: settings.merged.security?.auth?.selectedType,
+    pendingAuthType,
     isEditorDialogOpen,
     exitEditorDialog,
     isSettingsDialogOpen,
@@ -1186,12 +1203,13 @@ export const AppContainer = (props: AppContainerProps) => {
     isVisionSwitchDialogOpen ||
     isPermissionsDialogOpen ||
     isAuthDialogOpen ||
-    (isAuthenticating && isQwenAuthenticating) ||
+    isAuthenticating ||
     isEditorDialogOpen ||
     showIdeRestartPrompt ||
     !!proQuotaRequest ||
     isSubagentCreateDialogOpen ||
-    isAgentsManagerDialogOpen;
+    isAgentsManagerDialogOpen ||
+    isApprovalModeDialogOpen;
 
   const pendingHistoryItems = useMemo(
     () => [...pendingSlashCommandHistoryItems, ...pendingGeminiHistoryItems],
@@ -1208,12 +1226,9 @@ export const AppContainer = (props: AppContainerProps) => {
       isConfigInitialized,
       authError,
       isAuthDialogOpen,
+      pendingAuthType,
       // Qwen OAuth state
-      isQwenAuth,
-      isQwenAuthenticating,
-      deviceAuth,
-      authStatus,
-      authMessage,
+      qwenAuthState,
       editorError,
       isEditorDialogOpen,
       corgiMode,
@@ -1222,6 +1237,7 @@ export const AppContainer = (props: AppContainerProps) => {
       isSettingsDialogOpen,
       isModelDialogOpen,
       isPermissionsDialogOpen,
+      isApprovalModeDialogOpen,
       slashCommands,
       pendingSlashCommandHistoryItems,
       commandContext,
@@ -1302,12 +1318,9 @@ export const AppContainer = (props: AppContainerProps) => {
       isConfigInitialized,
       authError,
       isAuthDialogOpen,
+      pendingAuthType,
       // Qwen OAuth state
-      isQwenAuth,
-      isQwenAuthenticating,
-      deviceAuth,
-      authStatus,
-      authMessage,
+      qwenAuthState,
       editorError,
       isEditorDialogOpen,
       corgiMode,
@@ -1316,6 +1329,7 @@ export const AppContainer = (props: AppContainerProps) => {
       isSettingsDialogOpen,
       isModelDialogOpen,
       isPermissionsDialogOpen,
+      isApprovalModeDialogOpen,
       slashCommands,
       pendingSlashCommandHistoryItems,
       commandContext,
@@ -1396,12 +1410,11 @@ export const AppContainer = (props: AppContainerProps) => {
     () => ({
       handleThemeSelect,
       handleThemeHighlight,
+      handleApprovalModeSelect,
       handleAuthSelect,
       setAuthState,
       onAuthError,
-      // Qwen OAuth handlers
-      handleQwenAuthTimeout,
-      handleQwenAuthCancel,
+      cancelAuthentication,
       handleEditorSelect,
       exitEditorDialog,
       closeSettingsDialog,
@@ -1431,12 +1444,11 @@ export const AppContainer = (props: AppContainerProps) => {
     [
       handleThemeSelect,
       handleThemeHighlight,
+      handleApprovalModeSelect,
       handleAuthSelect,
       setAuthState,
       onAuthError,
-      // Qwen OAuth handlers
-      handleQwenAuthTimeout,
-      handleQwenAuthCancel,
+      cancelAuthentication,
       handleEditorSelect,
       exitEditorDialog,
       closeSettingsDialog,

packages/cli/src/ui/auth/AuthDialog.test.tsx

@@ -9,6 +9,53 @@ import { AuthDialog } from './AuthDialog.js';
 import { LoadedSettings, SettingScope } from '../../config/settings.js';
 import { AuthType } from '@qwen-code/qwen-code-core';
 import { renderWithProviders } from '../../test-utils/render.js';
+import { UIStateContext } from '../contexts/UIStateContext.js';
+import { UIActionsContext } from '../contexts/UIActionsContext.js';
+import type { UIState } from '../contexts/UIStateContext.js';
+import type { UIActions } from '../contexts/UIActionsContext.js';
+
+const createMockUIState = (overrides: Partial<UIState> = {}): UIState => {
+  // AuthDialog only uses authError and pendingAuthType
+  const baseState = {
+    authError: null,
+    pendingAuthType: undefined,
+  } as Partial<UIState>;
+
+  return {
+    ...baseState,
+    ...overrides,
+  } as UIState;
+};
+
+const createMockUIActions = (overrides: Partial<UIActions> = {}): UIActions => {
+  // AuthDialog only uses handleAuthSelect
+  const baseActions = {
+    handleAuthSelect: vi.fn(),
+  } as Partial<UIActions>;
+
+  return {
+    ...baseActions,
+    ...overrides,
+  } as UIActions;
+};
+
+const renderAuthDialog = (
+  settings: LoadedSettings,
+  uiStateOverrides: Partial<UIState> = {},
+  uiActionsOverrides: Partial<UIActions> = {},
+) => {
+  const uiState = createMockUIState(uiStateOverrides);
+  const uiActions = createMockUIActions(uiActionsOverrides);
+
+  return renderWithProviders(
+    <UIStateContext.Provider value={uiState}>
+      <UIActionsContext.Provider value={uiActions}>
+        <AuthDialog />
+      </UIActionsContext.Provider>
+    </UIStateContext.Provider>,
+    { settings },
+  );
+};
 
 describe('AuthDialog', () => {
   const wait = (ms = 50) => new Promise((resolve) => setTimeout(resolve, ms));
@@ -66,13 +113,9 @@ describe('AuthDialog', () => {
       new Set(),
     );
 
-    const { lastFrame } = renderWithProviders(
-      <AuthDialog
-        onSelect={() => {}}
-        settings={settings}
-        initialErrorMessage="GEMINI_API_KEY  environment variable not found"
-      />,
-    );
+    const { lastFrame } = renderAuthDialog(settings, {
+      authError: 'GEMINI_API_KEY  environment variable not found',
+    });
 
     expect(lastFrame()).toContain(
       'GEMINI_API_KEY  environment variable not found',
@@ -116,9 +159,7 @@ describe('AuthDialog', () => {
         new Set(),
       );
 
-      const { lastFrame } = renderWithProviders(
-        <AuthDialog onSelect={() => {}} settings={settings} />,
-      );
+      const { lastFrame } = renderAuthDialog(settings);
 
       // Since the auth dialog only shows OpenAI option now,
       // it won't show GEMINI_API_KEY messages
@@ -162,9 +203,7 @@ describe('AuthDialog', () => {
         new Set(),
       );
 
-      const { lastFrame } = renderWithProviders(
-        <AuthDialog onSelect={() => {}} settings={settings} />,
-      );
+      const { lastFrame } = renderAuthDialog(settings);
 
       expect(lastFrame()).not.toContain(
         'Existing API key detected (GEMINI_API_KEY)',
@@ -208,9 +247,7 @@ describe('AuthDialog', () => {
         new Set(),
       );
 
-      const { lastFrame } = renderWithProviders(
-        <AuthDialog onSelect={() => {}} settings={settings} />,
-      );
+      const { lastFrame } = renderAuthDialog(settings);
 
       // Since the auth dialog only shows OpenAI option now,
       // it won't show GEMINI_API_KEY messages
@@ -255,9 +292,7 @@ describe('AuthDialog', () => {
         new Set(),
       );
 
-      const { lastFrame } = renderWithProviders(
-        <AuthDialog onSelect={() => {}} settings={settings} />,
-      );
+      const { lastFrame } = renderAuthDialog(settings);
 
       // This is a bit brittle, but it's the best way to check which item is selected.
       expect(lastFrame()).toContain('● 2. OpenAI');
@@ -297,9 +332,7 @@ describe('AuthDialog', () => {
         new Set(),
       );
 
-      const { lastFrame } = renderWithProviders(
-        <AuthDialog onSelect={() => {}} settings={settings} />,
-      );
+      const { lastFrame } = renderAuthDialog(settings);
 
       // Default is Qwen OAuth (first option)
       expect(lastFrame()).toContain('● 1. Qwen OAuth');
@@ -341,9 +374,7 @@ describe('AuthDialog', () => {
         new Set(),
       );
 
-      const { lastFrame } = renderWithProviders(
-        <AuthDialog onSelect={() => {}} settings={settings} />,
-      );
+      const { lastFrame } = renderAuthDialog(settings);
 
       // Since the auth dialog doesn't show QWEN_DEFAULT_AUTH_TYPE errors anymore,
       // it will just show the default Qwen OAuth option
@@ -352,7 +383,7 @@ describe('AuthDialog', () => {
   });
 
   it('should prevent exiting when no auth method is selected and show error message', async () => {
-    const onSelect = vi.fn();
+    const handleAuthSelect = vi.fn();
     const settings: LoadedSettings = new LoadedSettings(
       {
         settings: { ui: { customThemes: {} }, mcpServers: {} },
@@ -386,8 +417,10 @@ describe('AuthDialog', () => {
       new Set(),
     );
 
-    const { lastFrame, stdin, unmount } = renderWithProviders(
-      <AuthDialog onSelect={onSelect} settings={settings} />,
+    const { lastFrame, stdin, unmount } = renderAuthDialog(
+      settings,
+      {},
+      { handleAuthSelect },
     );
     await wait();
 
@@ -395,16 +428,16 @@ describe('AuthDialog', () => {
     stdin.write('\u001b'); // ESC key
     await wait();
 
-    // Should show error message instead of calling onSelect
+    // Should show error message instead of calling handleAuthSelect
     expect(lastFrame()).toContain(
       'You must select an auth method to proceed. Press Ctrl+C again to exit.',
     );
-    expect(onSelect).not.toHaveBeenCalled();
+    expect(handleAuthSelect).not.toHaveBeenCalled();
     unmount();
   });
 
   it('should not exit if there is already an error message', async () => {
-    const onSelect = vi.fn();
+    const handleAuthSelect = vi.fn();
     const settings: LoadedSettings = new LoadedSettings(
       {
         settings: { ui: { customThemes: {} }, mcpServers: {} },
@@ -438,12 +471,10 @@ describe('AuthDialog', () => {
       new Set(),
     );
 
-    const { lastFrame, stdin, unmount } = renderWithProviders(
-      <AuthDialog
-        onSelect={onSelect}
-        settings={settings}
-        initialErrorMessage="Initial error"
-      />,
+    const { lastFrame, stdin, unmount } = renderAuthDialog(
+      settings,
+      { authError: 'Initial error' },
+      { handleAuthSelect },
     );
     await wait();
 
@@ -453,13 +484,13 @@ describe('AuthDialog', () => {
     stdin.write('\u001b'); // ESC key
     await wait();
 
-    // Should not call onSelect
-    expect(onSelect).not.toHaveBeenCalled();
+    // Should not call handleAuthSelect
+    expect(handleAuthSelect).not.toHaveBeenCalled();
     unmount();
   });
 
   it('should allow exiting when auth method is already selected', async () => {
-    const onSelect = vi.fn();
+    const handleAuthSelect = vi.fn();
     const settings: LoadedSettings = new LoadedSettings(
       {
         settings: { ui: { customThemes: {} }, mcpServers: {} },
@@ -493,8 +524,10 @@ describe('AuthDialog', () => {
       new Set(),
     );
 
-    const { stdin, unmount } = renderWithProviders(
-      <AuthDialog onSelect={onSelect} settings={settings} />,
+    const { stdin, unmount } = renderAuthDialog(
+      settings,
+      {},
+      { handleAuthSelect },
     );
     await wait();
 
@@ -502,8 +535,8 @@ describe('AuthDialog', () => {
     stdin.write('\u001b'); // ESC key
     await wait();
 
-    // Should call onSelect with undefined to exit
-    expect(onSelect).toHaveBeenCalledWith(undefined, SettingScope.User);
+    // Should call handleAuthSelect with undefined to exit
+    expect(handleAuthSelect).toHaveBeenCalledWith(undefined, SettingScope.User);
     unmount();
   });
 });

packages/cli/src/ui/auth/AuthDialog.tsx

@@ -8,23 +8,14 @@ import type React from 'react';
 import { useState } from 'react';
 import { AuthType } from '@qwen-code/qwen-code-core';
 import { Box, Text } from 'ink';
-import {
-  setOpenAIApiKey,
-  setOpenAIBaseUrl,
-  setOpenAIModel,
-  validateAuthMethod,
-} from '../../config/auth.js';
-import { type LoadedSettings, SettingScope } from '../../config/settings.js';
+import { SettingScope } from '../../config/settings.js';
 import { Colors } from '../colors.js';
 import { useKeypress } from '../hooks/useKeypress.js';
-import { OpenAIKeyPrompt } from '../components/OpenAIKeyPrompt.js';
 import { RadioButtonSelect } from '../components/shared/RadioButtonSelect.js';
-
-interface AuthDialogProps {
-  onSelect: (authMethod: AuthType | undefined, scope: SettingScope) => void;
-  settings: LoadedSettings;
-  initialErrorMessage?: string | null;
-}
+import { useUIState } from '../contexts/UIStateContext.js';
+import { useUIActions } from '../contexts/UIActionsContext.js';
+import { useSettings } from '../contexts/SettingsContext.js';
+import { t } from '../../i18n/index.js';
 
 function parseDefaultAuthType(
   defaultAuthType: string | undefined,
@@ -38,31 +29,41 @@ function parseDefaultAuthType(
   return null;
 }
 
-export function AuthDialog({
-  onSelect,
-  settings,
-  initialErrorMessage,
-}: AuthDialogProps): React.JSX.Element {
-  const [errorMessage, setErrorMessage] = useState<string | null>(
-    initialErrorMessage || null,
-  );
-  const [showOpenAIKeyPrompt, setShowOpenAIKeyPrompt] = useState(false);
+export function AuthDialog(): React.JSX.Element {
+  const { pendingAuthType, authError } = useUIState();
+  const { handleAuthSelect: onAuthSelect } = useUIActions();
+  const settings = useSettings();
+
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
+  const [selectedIndex, setSelectedIndex] = useState<number | null>(null);
+
   const items = [
     {
       key: AuthType.QWEN_OAUTH,
-      label: 'Qwen OAuth',
+      label: t('Qwen OAuth'),
       value: AuthType.QWEN_OAUTH,
     },
-    { key: AuthType.USE_OPENAI, label: 'OpenAI', value: AuthType.USE_OPENAI },
+    {
+      key: AuthType.USE_OPENAI,
+      label: t('OpenAI'),
+      value: AuthType.USE_OPENAI,
+    },
   ];
 
   const initialAuthIndex = Math.max(
     0,
     items.findIndex((item) => {
+      // Priority 1: pendingAuthType
+      if (pendingAuthType) {
+        return item.value === pendingAuthType;
+      }
+
+      // Priority 2: settings.merged.security?.auth?.selectedType
       if (settings.merged.security?.auth?.selectedType) {
         return item.value === settings.merged.security?.auth?.selectedType;
       }
 
+      // Priority 3: QWEN_DEFAULT_AUTH_TYPE env var
       const defaultAuthType = parseDefaultAuthType(
         process.env['QWEN_DEFAULT_AUTH_TYPE'],
       );
@@ -70,55 +71,29 @@ export function AuthDialog({
         return item.value === defaultAuthType;
       }
 
-      if (process.env['GEMINI_API_KEY']) {
-        return item.value === AuthType.USE_GEMINI;
-      }
-
-      return item.value === AuthType.LOGIN_WITH_GOOGLE;
+      // Priority 4: default to QWEN_OAUTH
+      return item.value === AuthType.QWEN_OAUTH;
     }),
   );
 
-  const handleAuthSelect = (authMethod: AuthType) => {
-    const error = validateAuthMethod(authMethod);
-    if (error) {
-      if (
-        authMethod === AuthType.USE_OPENAI &&
-        !process.env['OPENAI_API_KEY']
-      ) {
-        setShowOpenAIKeyPrompt(true);
-        setErrorMessage(null);
-      } else {
-        setErrorMessage(error);
-      }
-    } else {
-      setErrorMessage(null);
-      onSelect(authMethod, SettingScope.User);
-    }
+  const hasApiKey = Boolean(settings.merged.security?.auth?.apiKey);
+  const currentSelectedAuthType =
+    selectedIndex !== null
+      ? items[selectedIndex]?.value
+      : items[initialAuthIndex]?.value;
+
+  const handleAuthSelect = async (authMethod: AuthType) => {
+    setErrorMessage(null);
+    await onAuthSelect(authMethod, SettingScope.User);
   };
 
-  const handleOpenAIKeySubmit = (
-    apiKey: string,
-    baseUrl: string,
-    model: string,
-  ) => {
-    setOpenAIApiKey(apiKey);
-    setOpenAIBaseUrl(baseUrl);
-    setOpenAIModel(model);
-    setShowOpenAIKeyPrompt(false);
-    onSelect(AuthType.USE_OPENAI, SettingScope.User);
-  };
-
-  const handleOpenAIKeyCancel = () => {
-    setShowOpenAIKeyPrompt(false);
-    setErrorMessage('OpenAI API key is required to use OpenAI authentication.');
+  const handleHighlight = (authMethod: AuthType) => {
+    const index = items.findIndex((item) => item.value === authMethod);
+    setSelectedIndex(index);
   };
 
   useKeypress(
     (key) => {
-      if (showOpenAIKeyPrompt) {
-        return;
-      }
-
       if (key.name === 'escape') {
         // Prevent exit if there is an error message.
         // This means they user is not authenticated yet.
@@ -128,25 +103,18 @@ export function AuthDialog({
         if (settings.merged.security?.auth?.selectedType === undefined) {
           // Prevent exiting if no auth method is set
           setErrorMessage(
-            'You must select an auth method to proceed. Press Ctrl+C again to exit.',
+            t(
+              'You must select an auth method to proceed. Press Ctrl+C again to exit.',
+            ),
           );
           return;
         }
-        onSelect(undefined, SettingScope.User);
+        onAuthSelect(undefined, SettingScope.User);
       }
     },
     { isActive: true },
   );
 
-  if (showOpenAIKeyPrompt) {
-    return (
-      <OpenAIKeyPrompt
-        onSubmit={handleOpenAIKeySubmit}
-        onCancel={handleOpenAIKeyCancel}
-      />
-    );
-  }
-
   return (
     <Box
       borderStyle="round"
@@ -155,27 +123,37 @@ export function AuthDialog({
       padding={1}
       width="100%"
     >
-      <Text bold>Get started</Text>
+      <Text bold>{t('Get started')}</Text>
       <Box marginTop={1}>
-        <Text>How would you like to authenticate for this project?</Text>
+        <Text>{t('How would you like to authenticate for this project?')}</Text>
       </Box>
       <Box marginTop={1}>
         <RadioButtonSelect
           items={items}
           initialIndex={initialAuthIndex}
           onSelect={handleAuthSelect}
+          onHighlight={handleHighlight}
         />
       </Box>
-      {errorMessage && (
+      {(authError || errorMessage) && (
         <Box marginTop={1}>
-          <Text color={Colors.AccentRed}>{errorMessage}</Text>
+          <Text color={Colors.AccentRed}>{authError || errorMessage}</Text>
         </Box>
       )}
       <Box marginTop={1}>
-        <Text color={Colors.AccentPurple}>(Use Enter to Set Auth)</Text>
+        <Text color={Colors.AccentPurple}>{t('(Use Enter to Set Auth)')}</Text>
       </Box>
+      {hasApiKey && currentSelectedAuthType === AuthType.QWEN_OAUTH && (
+        <Box marginTop={1}>
+          <Text color={Colors.Gray}>
+            {t(
+              'Note: Your existing API key in settings.json will not be cleared when using Qwen OAuth. You can switch back to OpenAI authentication later if needed.',
+            )}
+          </Text>
+        </Box>
+      )}
       <Box marginTop={1}>
-        <Text>Terms of Services and Privacy Notice for Qwen Code</Text>
+        <Text>{t('Terms of Services and Privacy Notice for Qwen Code')}</Text>
       </Box>
       <Box marginTop={1}>
         <Text color={Colors.AccentBlue}>