Merge pull request #1548 from QwenLM/mingholy/fix/qwen-oauth-model-info

Fix: Update Qwen OAuth model information

.github/workflows/release-vscode-companion.yml

@@ -1,202 +0,0 @@
-name: 'Release VSCode IDE Companion'
-
-on:
-  workflow_dispatch:
-    inputs:
-      version:
-        description: 'The version to release (e.g., v0.1.11). Required for manual patch releases.'
-        required: false
-        type: 'string'
-      ref:
-        description: 'The branch or ref (full git sha) to release from.'
-        required: true
-        type: 'string'
-        default: 'main'
-      dry_run:
-        description: 'Run a dry-run of the release process; no branches, vsix packages or GitHub releases will be created.'
-        required: true
-        type: 'boolean'
-        default: true
-      create_preview_release:
-        description: 'Auto apply the preview release tag, input version is ignored.'
-        required: false
-        type: 'boolean'
-        default: false
-      force_skip_tests:
-        description: 'Select to skip the "Run Tests" step in testing. Prod releases should run tests'
-        required: false
-        type: 'boolean'
-        default: false
-
-concurrency:
-  group: '${{ github.workflow }}'
-  cancel-in-progress: false
-
-jobs:
-  release-vscode-companion:
-    runs-on: 'ubuntu-latest'
-    environment:
-      name: 'production-release'
-      url: '${{ github.server_url }}/${{ github.repository }}/releases/tag/vscode-companion-${{ steps.version.outputs.RELEASE_TAG }}'
-    if: |-
-      ${{ github.repository == 'QwenLM/qwen-code' }}
-    permissions:
-      contents: 'read'
-      issues: 'write'
-
-    steps:
-      - name: 'Checkout'
-        uses: 'actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8' # ratchet:actions/checkout@v5
-        with:
-          ref: '${{ github.event.inputs.ref || github.sha }}'
-          fetch-depth: 0
-
-      - name: 'Set booleans for simplified logic'
-        env:
-          CREATE_PREVIEW_RELEASE: '${{ github.event.inputs.create_preview_release }}'
-          DRY_RUN_INPUT: '${{ github.event.inputs.dry_run }}'
-        id: 'vars'
-        run: |-
-          is_preview="false"
-          if [[ "${CREATE_PREVIEW_RELEASE}" == "true" ]]; then
-            is_preview="true"
-          fi
-          echo "is_preview=${is_preview}" >> "${GITHUB_OUTPUT}"
-
-          is_dry_run="false"
-          if [[ "${DRY_RUN_INPUT}" == "true" ]]; then
-            is_dry_run="true"
-          fi
-          echo "is_dry_run=${is_dry_run}" >> "${GITHUB_OUTPUT}"
-
-      - name: 'Setup Node.js'
-        uses: 'actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020' # ratchet:actions/setup-node@v4
-        with:
-          node-version-file: '.nvmrc'
-          cache: 'npm'
-          cache-dependency-path: 'package-lock.json'
-
-      - name: 'Install Dependencies'
-        env:
-          NPM_CONFIG_PREFER_OFFLINE: 'true'
-        run: |-
-          npm ci
-
-      - name: 'Install VSCE and OVSX'
-        run: |-
-          npm install -g @vscode/vsce
-          npm install -g ovsx
-
-      - name: 'Get the version'
-        id: 'version'
-        run: |
-          if [[ "${IS_PREVIEW}" == "true" ]]; then
-            # Generate preview version with timestamp
-            TIMESTAMP=$(date +%Y%m%d%H%M%S)
-            PREVIEW_VERSION="0.0.0-preview.${TIMESTAMP}"
-            RELEASE_TAG="preview.${TIMESTAMP}"
-
-            echo "RELEASE_TAG=${RELEASE_TAG}" >> "$GITHUB_OUTPUT"
-            echo "RELEASE_VERSION=${PREVIEW_VERSION}" >> "$GITHUB_OUTPUT"
-            echo "VSCODE_TAG=preview" >> "$GITHUB_OUTPUT"
-          else
-            # Use specified version or get from package.json
-            if [[ -n "${MANUAL_VERSION}" ]]; then
-              RELEASE_VERSION="${MANUAL_VERSION#v}" # Remove 'v' prefix if present
-              RELEASE_TAG="${MANUAL_VERSION#v}" # Remove 'v' prefix if present
-            else
-              RELEASE_VERSION=$(node -p "require('./package.json').version")
-              RELEASE_TAG=$(node -p "require('./package.json').version")
-            fi
-
-            echo "RELEASE_TAG=${RELEASE_TAG}" >> "$GITHUB_OUTPUT"
-            echo "RELEASE_VERSION=${RELEASE_VERSION}" >> "$GITHUB_OUTPUT"
-            echo "VSCODE_TAG=latest" >> "$GITHUB_OUTPUT"
-          fi
-        env:
-          IS_PREVIEW: '${{ steps.vars.outputs.is_preview }}'
-          MANUAL_VERSION: '${{ inputs.version }}'
-
-      - name: 'Update package version (for preview releases)'
-        if: ${{ steps.vars.outputs.is_preview == 'true' }}
-        env:
-          RELEASE_VERSION: '${{ steps.version.outputs.RELEASE_VERSION }}'
-        run: |-
-          # Update package.json with preview version
-          npm version "${RELEASE_VERSION}" --no-git-tag-version --allow-same-version
-          npm version -w qwen-code-vscode-ide-companion "${RELEASE_VERSION}" --no-git-tag-version --allow-same-version
-
-      - name: 'Run Tests'
-        if: |-
-          ${{ github.event.inputs.force_skip_tests != 'true' }}
-        run: |
-          npm run test:ci
-        env:
-          OPENAI_API_KEY: '${{ secrets.OPENAI_API_KEY }}'
-          OPENAI_BASE_URL: '${{ secrets.OPENAI_BASE_URL }}'
-          OPENAI_MODEL: '${{ secrets.OPENAI_MODEL }}'
-
-      - name: 'Prepare VSCode Extension'
-        run: |
-          # Build and stage the extension + bundled CLI once.
-          npm --workspace=qwen-code-vscode-ide-companion run prepackage
-
-      - name: 'Package VSIX (dry run)'
-        if: ${{ steps.vars.outputs.is_dry_run == 'true' }}
-        working-directory: 'packages/vscode-ide-companion'
-        run: |-
-          if [[ "${{ steps.vars.outputs.is_preview }}" == "true" ]]; then
-            vsce package --pre-release --out ../qwen-code-vscode-companion-${{ steps.version.outputs.RELEASE_VERSION }}.vsix
-          else
-            vsce package --out ../qwen-code-vscode-companion-${{ steps.version.outputs.RELEASE_VERSION }}.vsix
-          fi
-
-      - name: 'Upload VSIX Artifact (dry run)'
-        if: ${{ steps.vars.outputs.is_dry_run == 'true' }}
-        uses: 'actions/upload-artifact@v4'
-        with:
-          name: 'qwen-code-vscode-companion-${{ steps.version.outputs.RELEASE_VERSION }}.vsix'
-          path: 'packages/qwen-code-vscode-companion-${{ steps.version.outputs.RELEASE_VERSION }}.vsix'
-          if-no-files-found: 'error'
-
-      - name: 'Publish to Microsoft Marketplace'
-        if: ${{ steps.vars.outputs.is_dry_run == 'false' }}
-        working-directory: 'packages/vscode-ide-companion'
-        env:
-          VSCE_PAT: '${{ secrets.VSCE_PAT }}'
-          VSCODE_TAG: '${{ steps.version.outputs.VSCODE_TAG }}'
-        run: |-
-          if [[ "${{ steps.vars.outputs.is_preview }}" == "true" ]]; then
-            echo "Skipping Microsoft Marketplace for preview release"
-          else
-            vsce publish --pat "${VSCE_PAT}" --tag "${VSCODE_TAG}"
-          fi
-
-      - name: 'Publish to OpenVSX'
-        if: ${{ steps.vars.outputs.is_dry_run == 'false' }}
-        working-directory: 'packages/vscode-ide-companion'
-        env:
-          OVSX_TOKEN: '${{ secrets.OVSX_TOKEN }}'
-          VSCODE_TAG: '${{ steps.version.outputs.VSCODE_TAG }}'
-        run: |-
-          if [[ "${{ steps.vars.outputs.is_preview }}" == "true" ]]; then
-            # For preview releases, publish with preview tag
-            # First package the extension for preview
-            vsce package --pre-release --out ../qwen-code-vscode-companion-${{ steps.version.outputs.RELEASE_VERSION }}.vsix
-            ovsx publish ../qwen-code-vscode-companion-${{ steps.version.outputs.RELEASE_VERSION }}.vsix --pat "${OVSX_TOKEN}" --pre-release
-          else
-            # Package and publish normally
-            vsce package --out ../qwen-code-vscode-companion-${{ steps.version.outputs.RELEASE_VERSION }}.vsix
-            ovsx publish ../qwen-code-vscode-companion-${{ steps.version.outputs.RELEASE_VERSION }}.vsix --pat "${OVSX_TOKEN}" --tag "${VSCODE_TAG}"
-          fi
-
-      - name: 'Create Issue on Failure'
-        if: |-
-          ${{ failure() }}
-        env:
-          GITHUB_TOKEN: '${{ secrets.GITHUB_TOKEN }}'
-          DETAILS_URL: '${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}'
-        run: |-
-          gh issue create \
-            --title "VSCode IDE Companion Release Failed for ${{ steps.version.outputs.RELEASE_VERSION }} on $(date +'%Y-%m-%d')" \
-            --body "The VSCode IDE Companion release workflow failed. See the full run for details: ${DETAILS_URL}"

docs/users/configuration/settings.md

@@ -274,7 +274,6 @@ If you are experiencing performance issues with file searching (e.g., with `@` c
 | `tools.truncateToolOutputThreshold`  | number            | Truncate tool output if it is larger than this many characters. Applies to Shell, Grep, Glob, ReadFile and ReadManyFiles tools.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | `25000`     | Requires restart: Yes                                                                                                                                                                                                                                |
 | `tools.truncateToolOutputLines`      | number            | Maximum lines or entries kept when truncating tool output. Applies to Shell, Grep, Glob, ReadFile and ReadManyFiles tools.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | `1000`      | Requires restart: Yes                                                                                                                                                                                                                                |
 | `tools.autoAccept`                   | boolean           | Controls whether the CLI automatically accepts and executes tool calls that are considered safe (e.g., read-only operations) without explicit user confirmation. If set to `true`, the CLI will bypass the confirmation prompt for tools deemed safe.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | `false`     |                                                                                                                                                                                                                                                      |
-| `tools.experimental.skills`           | boolean           | Enable experimental Agent Skills feature                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             | `false`     |                                                                                                                                                                                                                                                      |
 
 #### mcp
 
@@ -311,6 +310,12 @@ If you are experiencing performance issues with file searching (e.g., with `@` c
 >
 > **Note about advanced.tavilyApiKey:** 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.
 
+#### experimental
+
+| Setting               | Type    | Description                      | Default |
+| --------------------- | ------- | -------------------------------- | ------- |
+| `experimental.skills` | boolean | Enable experimental Agent Skills | `false` |
+
 #### mcpServers
 
 Configures connections to one or more Model-Context Protocol (MCP) servers for discovering and using custom tools. Qwen Code attempts to connect to each configured MCP server to discover available tools. If multiple MCP servers expose a tool with the same name, the tool names will be prefixed with the server alias you defined in the configuration (e.g., `serverAlias__actualToolName`) to avoid conflicts. Note that the system might strip certain schema properties from MCP tool definitions for compatibility. At least one of `command`, `url`, or `httpUrl` must be provided. If multiple are specified, the order of precedence is `httpUrl`, then `url`, then `command`.

integration-tests/acp-integration.test.ts

@@ -311,9 +311,9 @@ function setupAcpTest(
     }
   });
 
-  it('returns modes on initialize and allows setting approval mode', async () => {
+  it('returns modes on initialize and allows setting mode and model', async () => {
     const rig = new TestRig();
-    rig.setup('acp approval mode');
+    rig.setup('acp mode and model');
 
     const { sendRequest, cleanup, stderr } = setupAcpTest(rig);
 
@@ -366,8 +366,14 @@ function setupAcpTest(
       const newSession = (await sendRequest('session/new', {
         cwd: rig.testDir!,
         mcpServers: [],
-      })) as { sessionId: string };
+      })) as {
+        sessionId: string;
+        models: {
+          availableModels: Array<{ modelId: string }>;
+        };
+      };
       expect(newSession.sessionId).toBeTruthy();
+      expect(newSession.models.availableModels.length).toBeGreaterThan(0);
 
       // Test 4: Set approval mode to 'yolo'
       const setModeResult = (await sendRequest('session/set_mode', {
@@ -392,6 +398,15 @@ function setupAcpTest(
       })) as { modeId: string };
       expect(setModeResult3).toBeDefined();
       expect(setModeResult3.modeId).toBe('default');
+
+      // Test 7: Set model using first available model
+      const firstModel = newSession.models.availableModels[0];
+      const setModelResult = (await sendRequest('session/set_model', {
+        sessionId: newSession.sessionId,
+        modelId: firstModel.modelId,
+      })) as { modelId: string };
+      expect(setModelResult).toBeDefined();
+      expect(setModelResult.modelId).toBeTruthy();
     } catch (e) {
       if (stderr.length) {
         console.error('Agent stderr:', stderr.join(''));

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

@@ -8,6 +8,7 @@
 
 import { z } from 'zod';
 import * as schema from './schema.js';
+import { ACP_ERROR_CODES } from './errorCodes.js';
 export * from './schema.js';
 
 import type { WritableStream, ReadableStream } from 'node:stream/web';
@@ -70,6 +71,13 @@ export class AgentSideConnection implements Client {
           const validatedParams = schema.setModeRequestSchema.parse(params);
           return agent.setMode(validatedParams);
         }
+        case schema.AGENT_METHODS.session_set_model: {
+          if (!agent.setModel) {
+            throw RequestError.methodNotFound();
+          }
+          const validatedParams = schema.setModelRequestSchema.parse(params);
+          return agent.setModel(validatedParams);
+        }
         default:
           throw RequestError.methodNotFound(method);
       }
@@ -342,27 +350,51 @@ export class RequestError extends Error {
   }
 
   static parseError(details?: string): RequestError {
-    return new RequestError(-32700, 'Parse error', details);
+    return new RequestError(
+      ACP_ERROR_CODES.PARSE_ERROR,
+      'Parse error',
+      details,
+    );
   }
 
   static invalidRequest(details?: string): RequestError {
-    return new RequestError(-32600, 'Invalid request', details);
+    return new RequestError(
+      ACP_ERROR_CODES.INVALID_REQUEST,
+      'Invalid request',
+      details,
+    );
   }
 
   static methodNotFound(details?: string): RequestError {
-    return new RequestError(-32601, 'Method not found', details);
+    return new RequestError(
+      ACP_ERROR_CODES.METHOD_NOT_FOUND,
+      'Method not found',
+      details,
+    );
   }
 
   static invalidParams(details?: string): RequestError {
-    return new RequestError(-32602, 'Invalid params', details);
+    return new RequestError(
+      ACP_ERROR_CODES.INVALID_PARAMS,
+      'Invalid params',
+      details,
+    );
   }
 
   static internalError(details?: string): RequestError {
-    return new RequestError(-32603, 'Internal error', details);
+    return new RequestError(
+      ACP_ERROR_CODES.INTERNAL_ERROR,
+      'Internal error',
+      details,
+    );
   }
 
   static authRequired(details?: string): RequestError {
-    return new RequestError(-32000, 'Authentication required', details);
+    return new RequestError(
+      ACP_ERROR_CODES.AUTH_REQUIRED,
+      'Authentication required',
+      details,
+    );
   }
 
   toResult<T>(): Result<T> {
@@ -408,4 +440,5 @@ export interface Agent {
   prompt(params: schema.PromptRequest): Promise<schema.PromptResponse>;
   cancel(params: schema.CancelNotification): Promise<void>;
   setMode?(params: schema.SetModeRequest): Promise<schema.SetModeResponse>;
+  setModel?(params: schema.SetModelRequest): Promise<schema.SetModelResponse>;
 }

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

@@ -165,30 +165,11 @@ class GeminiAgent {
     this.setupFileSystem(config);
 
     const session = await this.createAndStoreSession(config);
-    const configuredModel = (
-      config.getModel() ||
-      this.config.getModel() ||
-      ''
-    ).trim();
-    const modelId = configuredModel || 'default';
-    const modelName = configuredModel || modelId;
+    const availableModels = this.buildAvailableModels(config);
 
     return {
       sessionId: session.getId(),
-      models: {
-        currentModelId: modelId,
-        availableModels: [
-          {
-            modelId,
-            name: modelName,
-            description: null,
-            _meta: {
-              contextLimit: tokenLimit(modelId),
-            },
-          },
-        ],
-        _meta: null,
-      },
+      models: availableModels,
     };
   }
 
@@ -305,15 +286,29 @@ class GeminiAgent {
   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}`);
+      throw acp.RequestError.invalidParams(
+        `Session not found for id: ${params.sessionId}`,
+      );
     }
     return session.setMode(params);
   }
 
+  async setModel(params: acp.SetModelRequest): Promise<acp.SetModelResponse> {
+    const session = this.sessions.get(params.sessionId);
+    if (!session) {
+      throw acp.RequestError.invalidParams(
+        `Session not found for id: ${params.sessionId}`,
+      );
+    }
+    return session.setModel(params);
+  }
+
   private async ensureAuthenticated(config: Config): Promise<void> {
     const selectedType = this.settings.merged.security?.auth?.selectedType;
     if (!selectedType) {
-      throw acp.RequestError.authRequired('No Selected Type');
+      throw acp.RequestError.authRequired(
+        'Use Qwen Code CLI to authenticate first.',
+      );
     }
 
     try {
@@ -382,4 +377,43 @@ class GeminiAgent {
 
     return session;
   }
+
+  private buildAvailableModels(
+    config: Config,
+  ): acp.NewSessionResponse['models'] {
+    const currentModelId = (
+      config.getModel() ||
+      this.config.getModel() ||
+      ''
+    ).trim();
+    const availableModels = config.getAvailableModels();
+
+    const mappedAvailableModels = availableModels.map((model) => ({
+      modelId: model.id,
+      name: model.label,
+      description: model.description ?? null,
+      _meta: {
+        contextLimit: tokenLimit(model.id),
+      },
+    }));
+
+    if (
+      currentModelId &&
+      !mappedAvailableModels.some((model) => model.modelId === currentModelId)
+    ) {
+      mappedAvailableModels.unshift({
+        modelId: currentModelId,
+        name: currentModelId,
+        description: null,
+        _meta: {
+          contextLimit: tokenLimit(currentModelId),
+        },
+      });
+    }
+
+    return {
+      currentModelId,
+      availableModels: mappedAvailableModels,
+    };
+  }
 }

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

@@ -0,0 +1,25 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+export const ACP_ERROR_CODES = {
+  // Parse error: invalid JSON received by server.
+  PARSE_ERROR: -32700,
+  // Invalid request: JSON is not a valid Request object.
+  INVALID_REQUEST: -32600,
+  // Method not found: method does not exist or is unavailable.
+  METHOD_NOT_FOUND: -32601,
+  // Invalid params: invalid method parameter(s).
+  INVALID_PARAMS: -32602,
+  // Internal error: implementation-defined server error.
+  INTERNAL_ERROR: -32603,
+  // Authentication required: must authenticate before operation.
+  AUTH_REQUIRED: -32000,
+  // Resource not found: e.g. missing file.
+  RESOURCE_NOT_FOUND: -32002,
+} as const;
+
+export type AcpErrorCode =
+  (typeof ACP_ERROR_CODES)[keyof typeof ACP_ERROR_CODES];

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

@@ -15,6 +15,7 @@ export const AGENT_METHODS = {
   session_prompt: 'session/prompt',
   session_list: 'session/list',
   session_set_mode: 'session/set_mode',
+  session_set_model: 'session/set_model',
 };
 
 export const CLIENT_METHODS = {
@@ -266,6 +267,18 @@ export const modelInfoSchema = z.object({
   name: z.string(),
 });
 
+export const setModelRequestSchema = z.object({
+  sessionId: z.string(),
+  modelId: z.string(),
+});
+
+export const setModelResponseSchema = z.object({
+  modelId: z.string(),
+});
+
+export type SetModelRequest = z.infer<typeof setModelRequestSchema>;
+export type SetModelResponse = z.infer<typeof setModelResponseSchema>;
+
 export const sessionModelStateSchema = z.object({
   _meta: acpMetaSchema,
   availableModels: z.array(modelInfoSchema),
@@ -592,6 +605,7 @@ export const agentResponseSchema = z.union([
   promptResponseSchema,
   listSessionsResponseSchema,
   setModeResponseSchema,
+  setModelResponseSchema,
 ]);
 
 export const requestPermissionRequestSchema = z.object({
@@ -624,6 +638,7 @@ export const agentRequestSchema = z.union([
   promptRequestSchema,
   listSessionsRequestSchema,
   setModeRequestSchema,
+  setModelRequestSchema,
 ]);
 
 export const agentNotificationSchema = sessionNotificationSchema;

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

@@ -7,6 +7,7 @@
 import { describe, expect, it, vi } from 'vitest';
 import type { FileSystemService } from '@qwen-code/qwen-code-core';
 import { AcpFileSystemService } from './filesystem.js';
+import { ACP_ERROR_CODES } from '../errorCodes.js';
 
 const createFallback = (): FileSystemService => ({
   readTextFile: vi.fn(),
@@ -16,11 +17,13 @@ const createFallback = (): FileSystemService => ({
 
 describe('AcpFileSystemService', () => {
   describe('readTextFile ENOENT handling', () => {
-    it('parses path from ACP ENOENT message (quoted)', async () => {
+    it('converts RESOURCE_NOT_FOUND error to ENOENT', async () => {
+      const resourceNotFoundError = {
+        code: ACP_ERROR_CODES.RESOURCE_NOT_FOUND,
+        message: 'File not found',
+      };
       const client = {
-        readTextFile: vi
-          .fn()
-          .mockResolvedValue({ content: 'ERROR: ENOENT: "/remote/file.txt"' }),
+        readTextFile: vi.fn().mockRejectedValue(resourceNotFoundError),
       } as unknown as import('../acp.js').Client;
 
       const svc = new AcpFileSystemService(
@@ -30,15 +33,20 @@ describe('AcpFileSystemService', () => {
         createFallback(),
       );
 
-      await expect(svc.readTextFile('/local/file.txt')).rejects.toMatchObject({
+      await expect(svc.readTextFile('/some/file.txt')).rejects.toMatchObject({
         code: 'ENOENT',
-        path: '/remote/file.txt',
+        errno: -2,
+        path: '/some/file.txt',
       });
     });
 
-    it('falls back to requested path when none provided', async () => {
+    it('re-throws other errors unchanged', async () => {
+      const otherError = {
+        code: ACP_ERROR_CODES.INTERNAL_ERROR,
+        message: 'Internal error',
+      };
       const client = {
-        readTextFile: vi.fn().mockResolvedValue({ content: 'ERROR: ENOENT:' }),
+        readTextFile: vi.fn().mockRejectedValue(otherError),
       } as unknown as import('../acp.js').Client;
 
       const svc = new AcpFileSystemService(
@@ -48,12 +56,34 @@ describe('AcpFileSystemService', () => {
         createFallback(),
       );
 
-      await expect(
-        svc.readTextFile('/fallback/path.txt'),
-      ).rejects.toMatchObject({
-        code: 'ENOENT',
-        path: '/fallback/path.txt',
+      await expect(svc.readTextFile('/some/file.txt')).rejects.toMatchObject({
+        code: ACP_ERROR_CODES.INTERNAL_ERROR,
+        message: 'Internal error',
       });
     });
+
+    it('uses fallback when readTextFile capability is disabled', async () => {
+      const client = {
+        readTextFile: vi.fn(),
+      } as unknown as import('../acp.js').Client;
+
+      const fallback = createFallback();
+      (fallback.readTextFile as ReturnType<typeof vi.fn>).mockResolvedValue(
+        'fallback content',
+      );
+
+      const svc = new AcpFileSystemService(
+        client,
+        'session-3',
+        { readTextFile: false, writeTextFile: true },
+        fallback,
+      );
+
+      const result = await svc.readTextFile('/some/file.txt');
+
+      expect(result).toBe('fallback content');
+      expect(fallback.readTextFile).toHaveBeenCalledWith('/some/file.txt');
+      expect(client.readTextFile).not.toHaveBeenCalled();
+    });
   });
 });

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

@@ -6,6 +6,7 @@
 
 import type { FileSystemService } from '@qwen-code/qwen-code-core';
 import type * as acp from '../acp.js';
+import { ACP_ERROR_CODES } from '../errorCodes.js';
 
 /**
  * ACP client-based implementation of FileSystemService
@@ -23,25 +24,31 @@ export class AcpFileSystemService implements FileSystemService {
       return this.fallback.readTextFile(filePath);
     }
 
-    const response = await this.client.readTextFile({
-      path: filePath,
-      sessionId: this.sessionId,
-      line: null,
-      limit: null,
-    });
+    let response: { content: string };
+    try {
+      response = await this.client.readTextFile({
+        path: filePath,
+        sessionId: this.sessionId,
+        line: null,
+        limit: null,
+      });
+    } catch (error) {
+      const errorCode =
+        typeof error === 'object' && error !== null && 'code' in error
+          ? (error as { code?: unknown }).code
+          : undefined;
 
-    if (response.content.startsWith('ERROR: ENOENT:')) {
-      // Treat ACP error strings as structured ENOENT errors without
-      // assuming a specific platform format.
-      const match = /^ERROR:\s*ENOENT:\s*(?<path>.*)$/i.exec(response.content);
-      const err = new Error(response.content) as NodeJS.ErrnoException;
-      err.code = 'ENOENT';
-      err.errno = -2;
-      const rawPath = match?.groups?.['path']?.trim();
-      err['path'] = rawPath
-        ? rawPath.replace(/^['"]|['"]$/g, '') || filePath
-        : filePath;
-      throw err;
+      if (errorCode === ACP_ERROR_CODES.RESOURCE_NOT_FOUND) {
+        const err = new Error(
+          `File not found: ${filePath}`,
+        ) as NodeJS.ErrnoException;
+        err.code = 'ENOENT';
+        err.errno = -2;
+        err.path = filePath;
+        throw err;
+      }
+
+      throw error;
     }
 
     return response.content;

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

@@ -0,0 +1,174 @@
+/**
+ * @license
+ * Copyright 2025 Qwen
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { Session } from './Session.js';
+import type { Config, GeminiChat } from '@qwen-code/qwen-code-core';
+import { ApprovalMode } from '@qwen-code/qwen-code-core';
+import type * as acp from '../acp.js';
+import type { LoadedSettings } from '../../config/settings.js';
+import * as nonInteractiveCliCommands from '../../nonInteractiveCliCommands.js';
+
+vi.mock('../../nonInteractiveCliCommands.js', () => ({
+  getAvailableCommands: vi.fn(),
+  handleSlashCommand: vi.fn(),
+}));
+
+describe('Session', () => {
+  let mockChat: GeminiChat;
+  let mockConfig: Config;
+  let mockClient: acp.Client;
+  let mockSettings: LoadedSettings;
+  let session: Session;
+  let currentModel: string;
+  let setModelSpy: ReturnType<typeof vi.fn>;
+  let getAvailableCommandsSpy: ReturnType<typeof vi.fn>;
+
+  beforeEach(() => {
+    currentModel = 'qwen3-code-plus';
+    setModelSpy = vi.fn().mockImplementation(async (modelId: string) => {
+      currentModel = modelId;
+    });
+
+    mockChat = {
+      sendMessageStream: vi.fn(),
+      addHistory: vi.fn(),
+    } as unknown as GeminiChat;
+
+    mockConfig = {
+      setApprovalMode: vi.fn(),
+      setModel: setModelSpy,
+      getModel: vi.fn().mockImplementation(() => currentModel),
+    } as unknown as Config;
+
+    mockClient = {
+      sessionUpdate: vi.fn().mockResolvedValue(undefined),
+      requestPermission: vi.fn().mockResolvedValue({
+        outcome: { outcome: 'selected', optionId: 'proceed_once' },
+      }),
+      sendCustomNotification: vi.fn().mockResolvedValue(undefined),
+    } as unknown as acp.Client;
+
+    mockSettings = {
+      merged: {},
+    } as LoadedSettings;
+
+    getAvailableCommandsSpy = vi.mocked(nonInteractiveCliCommands)
+      .getAvailableCommands as unknown as ReturnType<typeof vi.fn>;
+    getAvailableCommandsSpy.mockResolvedValue([]);
+
+    session = new Session(
+      'test-session-id',
+      mockChat,
+      mockConfig,
+      mockClient,
+      mockSettings,
+    );
+  });
+
+  describe('setMode', () => {
+    it.each([
+      ['plan', ApprovalMode.PLAN],
+      ['default', ApprovalMode.DEFAULT],
+      ['auto-edit', ApprovalMode.AUTO_EDIT],
+      ['yolo', ApprovalMode.YOLO],
+    ] as const)('maps %s mode', async (modeId, expected) => {
+      const result = await session.setMode({
+        sessionId: 'test-session-id',
+        modeId,
+      });
+
+      expect(mockConfig.setApprovalMode).toHaveBeenCalledWith(expected);
+      expect(result).toEqual({ modeId });
+    });
+  });
+
+  describe('setModel', () => {
+    it('sets model via config and returns current model', async () => {
+      const result = await session.setModel({
+        sessionId: 'test-session-id',
+        modelId: '  qwen3-coder-plus  ',
+      });
+
+      expect(mockConfig.setModel).toHaveBeenCalledWith('qwen3-coder-plus', {
+        reason: 'user_request_acp',
+        context: 'session/set_model',
+      });
+      expect(mockConfig.getModel).toHaveBeenCalled();
+      expect(result).toEqual({ modelId: 'qwen3-coder-plus' });
+    });
+
+    it('rejects empty/whitespace model IDs', async () => {
+      await expect(
+        session.setModel({
+          sessionId: 'test-session-id',
+          modelId: '   ',
+        }),
+      ).rejects.toThrow('Invalid params');
+
+      expect(mockConfig.setModel).not.toHaveBeenCalled();
+    });
+
+    it('propagates errors from config.setModel', async () => {
+      const configError = new Error('Invalid model');
+      setModelSpy.mockRejectedValueOnce(configError);
+
+      await expect(
+        session.setModel({
+          sessionId: 'test-session-id',
+          modelId: 'invalid-model',
+        }),
+      ).rejects.toThrow('Invalid model');
+    });
+  });
+
+  describe('sendAvailableCommandsUpdate', () => {
+    it('sends available_commands_update from getAvailableCommands()', async () => {
+      getAvailableCommandsSpy.mockResolvedValueOnce([
+        {
+          name: 'init',
+          description: 'Initialize project context',
+        },
+      ]);
+
+      await session.sendAvailableCommandsUpdate();
+
+      expect(getAvailableCommandsSpy).toHaveBeenCalledWith(
+        mockConfig,
+        expect.any(AbortSignal),
+      );
+      expect(mockClient.sessionUpdate).toHaveBeenCalledWith({
+        sessionId: 'test-session-id',
+        update: {
+          sessionUpdate: 'available_commands_update',
+          availableCommands: [
+            {
+              name: 'init',
+              description: 'Initialize project context',
+              input: null,
+            },
+          ],
+        },
+      });
+    });
+
+    it('swallows errors and does not throw', async () => {
+      const consoleErrorSpy = vi
+        .spyOn(console, 'error')
+        .mockImplementation(() => undefined);
+      getAvailableCommandsSpy.mockRejectedValueOnce(
+        new Error('Command discovery failed'),
+      );
+
+      await expect(
+        session.sendAvailableCommandsUpdate(),
+      ).resolves.toBeUndefined();
+      expect(mockClient.sessionUpdate).not.toHaveBeenCalled();
+      expect(consoleErrorSpy).toHaveBeenCalled();
+      consoleErrorSpy.mockRestore();
+    });
+  });
+});

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

@@ -52,6 +52,8 @@ import type {
   AvailableCommandsUpdate,
   SetModeRequest,
   SetModeResponse,
+  SetModelRequest,
+  SetModelResponse,
   ApprovalModeValue,
   CurrentModeUpdate,
 } from '../schema.js';
@@ -348,6 +350,31 @@ export class Session implements SessionContext {
     return { modeId: params.modeId };
   }
 
+  /**
+   * Sets the model for the current session.
+   * Validates the model ID and switches the model via Config.
+   */
+  async setModel(params: SetModelRequest): Promise<SetModelResponse> {
+    const modelId = params.modelId.trim();
+
+    if (!modelId) {
+      throw acp.RequestError.invalidParams('modelId cannot be empty');
+    }
+
+    // Attempt to set the model using config
+    await this.config.setModel(modelId, {
+      reason: 'user_request_acp',
+      context: 'session/set_model',
+    });
+
+    // Get updated model info
+    const currentModel = this.config.getModel();
+
+    return {
+      modelId: currentModel,
+    };
+  }
+
   /**
    * Sends a current_mode_update notification to the client.
    * Called after the agent switches modes (e.g., from exit_plan_mode tool).

packages/cli/src/config/config.ts

@@ -332,7 +332,14 @@ export async function parseArguments(settings: Settings): Promise<CliArgs> {
         .option('experimental-skills', {
           type: 'boolean',
           description: 'Enable experimental Skills feature',
-          default: settings.tools?.experimental?.skills ?? false,
+          default: (() => {
+            const legacySkills = (
+              settings as Settings & {
+                tools?: { experimental?: { skills?: boolean } };
+              }
+            ).tools?.experimental?.skills;
+            return settings.experimental?.skills ?? legacySkills ?? false;
+          })(),
         })
         .option('channel', {
           type: 'string',

packages/cli/src/config/keyBindings.ts

@@ -122,9 +122,10 @@ export const defaultKeyBindings: KeyBindingConfig = {
 
   // Auto-completion
   [Command.ACCEPT_SUGGESTION]: [{ key: 'tab' }, { key: 'return', ctrl: false }],
-  // Completion navigation (arrow or Ctrl+P/N)
-  [Command.COMPLETION_UP]: [{ key: 'up' }, { key: 'p', ctrl: true }],
-  [Command.COMPLETION_DOWN]: [{ key: 'down' }, { key: 'n', ctrl: true }],
+  // Completion navigation uses only arrow keys
+  // Ctrl+P/N are reserved for history navigation (HISTORY_UP/DOWN)
+  [Command.COMPLETION_UP]: [{ key: 'up' }],
+  [Command.COMPLETION_DOWN]: [{ key: 'down' }],
 
   // Text input
   // Must also exclude shift to allow shift+enter for newline

packages/cli/src/config/settings.ts

@@ -921,6 +921,21 @@ export function migrateDeprecatedSettings(
 
       loadedSettings.setValue(scope, 'extensions', newExtensionsValue);
     }
+
+    const legacySkills = (
+      settings as Settings & {
+        tools?: { experimental?: { skills?: boolean } };
+      }
+    ).tools?.experimental?.skills;
+    if (
+      legacySkills !== undefined &&
+      settings.experimental?.skills === undefined
+    ) {
+      console.log(
+        `Migrating deprecated tools.experimental.skills setting from ${scope} settings...`,
+      );
+      loadedSettings.setValue(scope, 'experimental.skills', legacySkills);
+    }
   };
 
   processScope(SettingScope.User);

packages/cli/src/config/settingsSchema.ts

@@ -434,6 +434,16 @@ const SETTINGS_SCHEMA = {
           'Show welcome back dialog when returning to a project with conversation history.',
         showInDialog: true,
       },
+      enableUserFeedback: {
+        type: 'boolean',
+        label: 'Enable User Feedback',
+        category: 'UI',
+        requiresRestart: false,
+        default: true,
+        description:
+          'Show optional feedback dialog after conversations to help improve Qwen performance.',
+        showInDialog: true,
+      },
       accessibility: {
         type: 'object',
         label: 'Accessibility',
@@ -464,6 +474,15 @@ const SETTINGS_SCHEMA = {
           },
         },
       },
+      feedbackLastShownTimestamp: {
+        type: 'number',
+        label: 'Feedback Last Shown Timestamp',
+        category: 'UI',
+        requiresRestart: false,
+        default: 0,
+        description: 'The last time the feedback dialog was shown.',
+        showInDialog: false,
+      },
     },
   },
 
@@ -972,27 +991,6 @@ const SETTINGS_SCHEMA = {
         description: 'The number of lines to keep when truncating tool output.',
         showInDialog: true,
       },
-      experimental: {
-        type: 'object',
-        label: 'Experimental',
-        category: 'Tools',
-        requiresRestart: true,
-        default: {},
-        description: 'Experimental tool features.',
-        showInDialog: false,
-        properties: {
-          skills: {
-            type: 'boolean',
-            label: 'Skills',
-            category: 'Tools',
-            requiresRestart: true,
-            default: false,
-            description:
-              'Enable experimental Agent Skills feature. When enabled, Qwen Code can use Skills from .qwen/skills/ and ~/.qwen/skills/.',
-            showInDialog: true,
-          },
-        },
-      },
     },
   },
 
@@ -1219,6 +1217,16 @@ const SETTINGS_SCHEMA = {
     description: 'Setting to enable experimental features',
     showInDialog: false,
     properties: {
+      skills: {
+        type: 'boolean',
+        label: 'Skills',
+        category: 'Experimental',
+        requiresRestart: true,
+        default: false,
+        description:
+          'Enable experimental Agent Skills feature. When enabled, Qwen Code can use Skills from .qwen/skills/ and ~/.qwen/skills/.',
+        showInDialog: true,
+      },
       extensionManagement: {
         type: 'boolean',
         label: 'Extension Management',

packages/cli/src/i18n/locales/de.js

@@ -289,6 +289,13 @@ export default {
   'Show Citations': 'Quellenangaben anzeigen',
   'Custom Witty Phrases': 'Benutzerdefinierte Witzige Sprüche',
   'Enable Welcome Back': 'Willkommen-zurück aktivieren',
+  'Enable User Feedback': 'Benutzerfeedback aktivieren',
+  'How is Qwen doing this session? (optional)':
+    'Wie macht sich Qwen in dieser Sitzung? (optional)',
+  Bad: 'Schlecht',
+  Good: 'Gut',
+  'Not Sure Yet': 'Noch nicht sicher',
+  'Any other key': 'Beliebige andere Taste',
   'Disable Loading Phrases': 'Ladesprüche deaktivieren',
   'Screen Reader Mode': 'Bildschirmleser-Modus',
   'IDE Mode': 'IDE-Modus',

packages/cli/src/i18n/locales/en.js

@@ -286,6 +286,13 @@ export default {
   'Show Citations': 'Show Citations',
   'Custom Witty Phrases': 'Custom Witty Phrases',
   'Enable Welcome Back': 'Enable Welcome Back',
+  'Enable User Feedback': 'Enable User Feedback',
+  'How is Qwen doing this session? (optional)':
+    'How is Qwen doing this session? (optional)',
+  Bad: 'Bad',
+  Good: 'Good',
+  'Not Sure Yet': 'Not Sure Yet',
+  'Any other key': 'Any other key',
   'Disable Loading Phrases': 'Disable Loading Phrases',
   'Screen Reader Mode': 'Screen Reader Mode',
   'IDE Mode': 'IDE Mode',

packages/cli/src/i18n/locales/ru.js

@@ -289,6 +289,13 @@ export default {
   'Show Citations': 'Показывать цитаты',
   'Custom Witty Phrases': 'Пользовательские остроумные фразы',
   'Enable Welcome Back': 'Включить приветствие при возврате',
+  'Enable User Feedback': 'Включить отзывы пользователей',
+  'How is Qwen doing this session? (optional)':
+    'Как дела у Qwen в этой сессии? (необязательно)',
+  Bad: 'Плохо',
+  Good: 'Хорошо',
+  'Not Sure Yet': 'Пока не уверен',
+  'Any other key': 'Любая другая клавиша',
   'Disable Loading Phrases': 'Отключить фразы при загрузке',
   'Screen Reader Mode': 'Режим программы чтения с экрана',
   'IDE Mode': 'Режим IDE',

packages/cli/src/i18n/locales/zh.js

@@ -277,6 +277,12 @@ export default {
   'Show Citations': '显示引用',
   'Custom Witty Phrases': '自定义诙谐短语',
   'Enable Welcome Back': '启用欢迎回来',
+  'Enable User Feedback': '启用用户反馈',
+  'How is Qwen doing this session? (optional)': 'Qwen 这次表现如何？（可选）',
+  Bad: '不满意',
+  Good: '满意',
+  'Not Sure Yet': '暂不评价',
+  'Any other key': '任意其他键',
   'Disable Loading Phrases': '禁用加载短语',
   'Screen Reader Mode': '屏幕阅读器模式',
   'IDE Mode': 'IDE 模式',

packages/cli/src/ui/AppContainer.tsx

@@ -45,6 +45,7 @@ import process from 'node:process';
 import { useHistory } from './hooks/useHistoryManager.js';
 import { useMemoryMonitor } from './hooks/useMemoryMonitor.js';
 import { useThemeCommand } from './hooks/useThemeCommand.js';
+import { useFeedbackDialog } from './hooks/useFeedbackDialog.js';
 import { useAuthCommand } from './auth/useAuth.js';
 import { useEditorSettings } from './hooks/useEditorSettings.js';
 import { useSettingsCommand } from './hooks/useSettingsCommand.js';
@@ -1195,6 +1196,19 @@ export const AppContainer = (props: AppContainerProps) => {
     isApprovalModeDialogOpen ||
     isResumeDialogOpen;
 
+  const {
+    isFeedbackDialogOpen,
+    openFeedbackDialog,
+    closeFeedbackDialog,
+    submitFeedback,
+  } = useFeedbackDialog({
+    config,
+    settings,
+    streamingState,
+    history: historyManager.history,
+    sessionStats,
+  });
+
   const pendingHistoryItems = useMemo(
     () => [...pendingSlashCommandHistoryItems, ...pendingGeminiHistoryItems],
     [pendingSlashCommandHistoryItems, pendingGeminiHistoryItems],
@@ -1291,6 +1305,8 @@ export const AppContainer = (props: AppContainerProps) => {
       // Subagent dialogs
       isSubagentCreateDialogOpen,
       isAgentsManagerDialogOpen,
+      // Feedback dialog
+      isFeedbackDialogOpen,
     }),
     [
       isThemeDialogOpen,
@@ -1381,6 +1397,8 @@ export const AppContainer = (props: AppContainerProps) => {
       // Subagent dialogs
       isSubagentCreateDialogOpen,
       isAgentsManagerDialogOpen,
+      // Feedback dialog
+      isFeedbackDialogOpen,
     ],
   );
 
@@ -1421,6 +1439,10 @@ export const AppContainer = (props: AppContainerProps) => {
       openResumeDialog,
       closeResumeDialog,
       handleResume,
+      // Feedback dialog
+      openFeedbackDialog,
+      closeFeedbackDialog,
+      submitFeedback,
     }),
     [
       handleThemeSelect,
@@ -1456,6 +1478,10 @@ export const AppContainer = (props: AppContainerProps) => {
       openResumeDialog,
       closeResumeDialog,
       handleResume,
+      // Feedback dialog
+      openFeedbackDialog,
+      closeFeedbackDialog,
+      submitFeedback,
     ],
   );
 

packages/cli/src/ui/FeedbackDialog.tsx

@@ -0,0 +1,61 @@
+import { Box, Text } from 'ink';
+import type React from 'react';
+import { t } from '../i18n/index.js';
+import { useUIActions } from './contexts/UIActionsContext.js';
+import { useUIState } from './contexts/UIStateContext.js';
+import { useKeypress } from './hooks/useKeypress.js';
+
+const FEEDBACK_OPTIONS = {
+  GOOD: 1,
+  BAD: 2,
+  NOT_SURE: 3,
+} as const;
+
+const FEEDBACK_OPTION_KEYS = {
+  [FEEDBACK_OPTIONS.GOOD]: '1',
+  [FEEDBACK_OPTIONS.BAD]: '2',
+  [FEEDBACK_OPTIONS.NOT_SURE]: 'any',
+} as const;
+
+export const FEEDBACK_DIALOG_KEYS = ['1', '2'] as const;
+
+export const FeedbackDialog: React.FC = () => {
+  const uiState = useUIState();
+  const uiActions = useUIActions();
+
+  useKeypress(
+    (key) => {
+      if (key.name === FEEDBACK_OPTION_KEYS[FEEDBACK_OPTIONS.GOOD]) {
+        uiActions.submitFeedback(FEEDBACK_OPTIONS.GOOD);
+      } else if (key.name === FEEDBACK_OPTION_KEYS[FEEDBACK_OPTIONS.BAD]) {
+        uiActions.submitFeedback(FEEDBACK_OPTIONS.BAD);
+      } else {
+        uiActions.submitFeedback(FEEDBACK_OPTIONS.NOT_SURE);
+      }
+
+      uiActions.closeFeedbackDialog();
+    },
+    { isActive: uiState.isFeedbackDialogOpen },
+  );
+
+  return (
+    <Box flexDirection="column" marginY={1}>
+      <Box>
+        <Text color="cyan">● </Text>
+        <Text bold>{t('How is Qwen doing this session? (optional)')}</Text>
+      </Box>
+      <Box marginTop={1}>
+        <Text color="cyan">
+          {FEEDBACK_OPTION_KEYS[FEEDBACK_OPTIONS.GOOD]}:{' '}
+        </Text>
+        <Text>{t('Good')}</Text>
+        <Text> </Text>
+        <Text color="cyan">{FEEDBACK_OPTION_KEYS[FEEDBACK_OPTIONS.BAD]}: </Text>
+        <Text>{t('Bad')}</Text>
+        <Text> </Text>
+        <Text color="cyan">{t('Any other key')}: </Text>
+        <Text>{t('Not Sure Yet')}</Text>
+      </Box>
+    </Box>
+  );
+};

packages/cli/src/ui/auth/useAuth.ts

@@ -4,7 +4,11 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-import type { Config, ModelProvidersConfig } from '@qwen-code/qwen-code-core';
+import type {
+  Config,
+  ContentGeneratorConfig,
+  ModelProvidersConfig,
+} from '@qwen-code/qwen-code-core';
 import {
   AuthEvent,
   AuthType,
@@ -214,11 +218,19 @@ export const useAuthCommand = (
 
       if (authType === AuthType.USE_OPENAI) {
         if (credentials) {
-          config.updateCredentials({
-            apiKey: credentials.apiKey,
-            baseUrl: credentials.baseUrl,
-            model: credentials.model,
-          });
+          // Pass settings.model.generationConfig to updateCredentials so it can be merged
+          // after clearing provider-sourced config. This ensures settings.json generationConfig
+          // fields (e.g., samplingParams, timeout) are preserved.
+          const settingsGenerationConfig = settings.merged.model
+            ?.generationConfig as Partial<ContentGeneratorConfig> | undefined;
+          config.updateCredentials(
+            {
+              apiKey: credentials.apiKey,
+              baseUrl: credentials.baseUrl,
+              model: credentials.model,
+            },
+            settingsGenerationConfig,
+          );
           await performAuth(authType, credentials);
         }
         return;
@@ -226,7 +238,13 @@ export const useAuthCommand = (
 
       await performAuth(authType);
     },
-    [config, performAuth, isProviderManagedModel, onAuthError],
+    [
+      config,
+      performAuth,
+      isProviderManagedModel,
+      onAuthError,
+      settings.merged.model?.generationConfig,
+    ],
   );
 
   const openAuthDialog = useCallback(() => {

packages/cli/src/ui/components/Composer.tsx

@@ -26,6 +26,7 @@ import { useSettings } from '../contexts/SettingsContext.js';
 import { ApprovalMode } from '@qwen-code/qwen-code-core';
 import { StreamingState } from '../types.js';
 import { ConfigInitDisplay } from '../components/ConfigInitDisplay.js';
+import { FeedbackDialog } from '../FeedbackDialog.js';
 import { t } from '../../i18n/index.js';
 
 export const Composer = () => {
@@ -134,6 +135,8 @@ export const Composer = () => {
         </OverflowProvider>
       )}
 
+      {uiState.isFeedbackDialogOpen && <FeedbackDialog />}
+
       {uiState.isInputActive && (
         <InputPrompt
           buffer={uiState.buffer}

packages/cli/src/ui/components/InputPrompt.test.tsx

@@ -33,6 +33,9 @@ vi.mock('../hooks/useCommandCompletion.js');
 vi.mock('../hooks/useInputHistory.js');
 vi.mock('../hooks/useReverseSearchCompletion.js');
 vi.mock('../utils/clipboardUtils.js');
+vi.mock('../contexts/UIStateContext.js', () => ({
+  useUIState: vi.fn(() => ({ isFeedbackDialogOpen: false })),
+}));
 
 const mockSlashCommands: SlashCommand[] = [
   {
@@ -278,7 +281,7 @@ describe('InputPrompt', () => {
     unmount();
   });
 
-  it('should call completion.navigateUp for both up arrow and Ctrl+P when suggestions are showing', async () => {
+  it('should call completion.navigateUp for up arrow when suggestions are showing', async () => {
     mockedUseCommandCompletion.mockReturnValue({
       ...mockCommandCompletion,
       showSuggestions: true,
@@ -293,19 +296,22 @@ describe('InputPrompt', () => {
     const { stdin, unmount } = renderWithProviders(<InputPrompt {...props} />);
     await wait();
 
-    // Test up arrow
+    // Test up arrow for completion navigation
     stdin.write('\u001B[A'); // Up arrow
     await wait();
+    expect(mockCommandCompletion.navigateUp).toHaveBeenCalledTimes(1);
+    expect(mockCommandCompletion.navigateDown).not.toHaveBeenCalled();
 
+    // Ctrl+P should navigate history, not completion
     stdin.write('\u0010'); // Ctrl+P
     await wait();
-    expect(mockCommandCompletion.navigateUp).toHaveBeenCalledTimes(2);
-    expect(mockCommandCompletion.navigateDown).not.toHaveBeenCalled();
+    expect(mockCommandCompletion.navigateUp).toHaveBeenCalledTimes(1);
+    expect(mockInputHistory.navigateUp).toHaveBeenCalled();
 
     unmount();
   });
 
-  it('should call completion.navigateDown for both down arrow and Ctrl+N when suggestions are showing', async () => {
+  it('should call completion.navigateDown for down arrow when suggestions are showing', async () => {
     mockedUseCommandCompletion.mockReturnValue({
       ...mockCommandCompletion,
       showSuggestions: true,
@@ -319,14 +325,17 @@ describe('InputPrompt', () => {
     const { stdin, unmount } = renderWithProviders(<InputPrompt {...props} />);
     await wait();
 
-    // Test down arrow
+    // Test down arrow for completion navigation
     stdin.write('\u001B[B'); // Down arrow
     await wait();
+    expect(mockCommandCompletion.navigateDown).toHaveBeenCalledTimes(1);
+    expect(mockCommandCompletion.navigateUp).not.toHaveBeenCalled();
 
+    // Ctrl+N should navigate history, not completion
     stdin.write('\u000E'); // Ctrl+N
     await wait();
-    expect(mockCommandCompletion.navigateDown).toHaveBeenCalledTimes(2);
-    expect(mockCommandCompletion.navigateUp).not.toHaveBeenCalled();
+    expect(mockCommandCompletion.navigateDown).toHaveBeenCalledTimes(1);
+    expect(mockInputHistory.navigateDown).toHaveBeenCalled();
 
     unmount();
   });
@@ -764,6 +773,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -791,6 +802,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -818,6 +831,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -845,6 +860,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -872,6 +889,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -900,6 +919,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -927,6 +948,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -955,6 +978,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -983,6 +1008,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -1011,6 +1038,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -1039,6 +1068,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -1069,6 +1100,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -1097,6 +1130,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();
@@ -1127,6 +1162,8 @@ describe('InputPrompt', () => {
         mockCommandContext,
         false,
         expect.any(Object),
+        // active parameter: completion enabled when not just navigated history
+        true,
       );
 
       unmount();

packages/cli/src/ui/components/InputPrompt.tsx

@@ -36,6 +36,8 @@ import {
 import * as path from 'node:path';
 import { SCREEN_READER_USER_PREFIX } from '../textConstants.js';
 import { useShellFocusState } from '../contexts/ShellFocusContext.js';
+import { useUIState } from '../contexts/UIStateContext.js';
+import { FEEDBACK_DIALOG_KEYS } from '../FeedbackDialog.js';
 export interface InputPromptProps {
   buffer: TextBuffer;
   onSubmit: (value: string) => void;
@@ -100,6 +102,7 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
   isEmbeddedShellFocused,
 }) => {
   const isShellFocused = useShellFocusState();
+  const uiState = useUIState();
   const [justNavigatedHistory, setJustNavigatedHistory] = useState(false);
   const [escPressCount, setEscPressCount] = useState(0);
   const [showEscapePrompt, setShowEscapePrompt] = useState(false);
@@ -135,6 +138,8 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
     commandContext,
     reverseSearchActive,
     config,
+    // Suppress completion when history navigation just occurred
+    !justNavigatedHistory,
   );
 
   const reverseSearchCompletion = useReverseSearchCompletion(
@@ -219,9 +224,9 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
   const inputHistory = useInputHistory({
     userMessages,
     onSubmit: handleSubmitAndClear,
-    isActive:
-      (!completion.showSuggestions || completion.suggestions.length === 1) &&
-      !shellModeActive,
+    // History navigation (Ctrl+P/N) now always works since completion navigation
+    // only uses arrow keys. Only disable in shell mode.
+    isActive: !shellModeActive,
     currentQuery: buffer.text,
     onChange: customSetTextAndResetCompletionSignal,
   });
@@ -326,6 +331,14 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
         return;
       }
 
+      // Intercept feedback dialog option keys (1, 2) when dialog is open
+      if (
+        uiState.isFeedbackDialogOpen &&
+        (FEEDBACK_DIALOG_KEYS as readonly string[]).includes(key.name)
+      ) {
+        return;
+      }
+
       // Reset ESC count and hide prompt on any non-ESC key
       if (key.name !== 'escape') {
         if (escPressCount > 0 || showEscapePrompt) {
@@ -670,6 +683,7 @@ export const InputPrompt: React.FC<InputPromptProps> = ({
       recentPasteTime,
       commandSearchActive,
       commandSearchCompletion,
+      uiState,
     ],
   );
 

packages/cli/src/ui/components/ModelDialog.tsx

@@ -275,7 +275,7 @@ export function ModelDialog({ onClose }: ModelDialogProps): React.JSX.Element {
         persistModelSelection(settings, effectiveModelId);
         persistAuthTypeSelection(settings, effectiveAuthType);
 
-        const baseUrl = after?.baseUrl ?? '(default)';
+        const baseUrl = after?.baseUrl ?? t('(default)');
         const maskedKey = maskApiKey(after?.apiKey);
         uiState?.historyManager.addItem(
           {
@@ -322,7 +322,7 @@ export function ModelDialog({ onClose }: ModelDialogProps): React.JSX.Element {
             <>
               <ConfigRow
                 label="Base URL"
-                value={effectiveConfig?.baseUrl ?? ''}
+                value={effectiveConfig?.baseUrl ?? t('(default)')}
                 badge={formatSourceBadge(sources['baseUrl'])}
               />
               <ConfigRow

packages/cli/src/ui/contexts/UIActionsContext.tsx

@@ -66,6 +66,10 @@ export interface UIActions {
   openResumeDialog: () => void;
   closeResumeDialog: () => void;
   handleResume: (sessionId: string) => void;
+  // Feedback dialog
+  openFeedbackDialog: () => void;
+  closeFeedbackDialog: () => void;
+  submitFeedback: (rating: number) => void;
 }
 
 export const UIActionsContext = createContext<UIActions | null>(null);

packages/cli/src/ui/contexts/UIStateContext.tsx

@@ -126,6 +126,8 @@ export interface UIState {
   // Subagent dialogs
   isSubagentCreateDialogOpen: boolean;
   isAgentsManagerDialogOpen: boolean;
+  // Feedback dialog
+  isFeedbackDialogOpen: boolean;
 }
 
 export const UIStateContext = createContext<UIState | null>(null);

packages/cli/src/ui/hooks/useCommandCompletion.tsx

@@ -45,6 +45,8 @@ export function useCommandCompletion(
   commandContext: CommandContext,
   reverseSearchActive: boolean = false,
   config?: Config,
+  // When false, suppresses showing suggestions (e.g., after history navigation)
+  active: boolean = true,
 ): UseCommandCompletionReturn {
   const {
     suggestions,
@@ -152,7 +154,11 @@ export function useCommandCompletion(
   }, [suggestions, setActiveSuggestionIndex, setVisibleStartIndex]);
 
   useEffect(() => {
-    if (completionMode === CompletionMode.IDLE || reverseSearchActive) {
+    if (
+      completionMode === CompletionMode.IDLE ||
+      reverseSearchActive ||
+      !active
+    ) {
       resetCompletionState();
       return;
     }
@@ -163,6 +169,7 @@ export function useCommandCompletion(
     suggestions.length,
     isLoadingSuggestions,
     reverseSearchActive,
+    active,
     resetCompletionState,
     setShowSuggestions,
   ]);

packages/cli/src/ui/hooks/useFeedbackDialog.ts

@@ -0,0 +1,178 @@
+import { useState, useCallback, useEffect } from 'react';
+import * as fs from 'node:fs';
+import {
+  type Config,
+  logUserFeedback,
+  UserFeedbackEvent,
+  type UserFeedbackRating,
+  isNodeError,
+  AuthType,
+} from '@qwen-code/qwen-code-core';
+import { StreamingState, MessageType, type HistoryItem } from '../types.js';
+import {
+  SettingScope,
+  type LoadedSettings,
+  USER_SETTINGS_PATH,
+} from '../../config/settings.js';
+import type { SessionStatsState } from '../contexts/SessionContext.js';
+import stripJsonComments from 'strip-json-comments';
+
+const FEEDBACK_SHOW_PROBABILITY = 0.25; // 25% probability of showing feedback dialog
+const MIN_TOOL_CALLS = 10; // Minimum tool calls to show feedback dialog
+const MIN_USER_MESSAGES = 5; // Minimum user messages to show feedback dialog
+
+// Fatigue mechanism constants
+const FEEDBACK_COOLDOWN_HOURS = 24; // Hours to wait before showing feedback dialog again
+
+/**
+ * Check if the last message in the conversation history is an AI response
+ */
+const lastMessageIsAIResponse = (history: HistoryItem[]): boolean =>
+  history.length > 0 && history[history.length - 1].type === MessageType.GEMINI;
+
+/**
+ * Read feedbackLastShownTimestamp directly from the user settings file
+ */
+const getFeedbackLastShownTimestampFromFile = (): number => {
+  try {
+    if (fs.existsSync(USER_SETTINGS_PATH)) {
+      const content = fs.readFileSync(USER_SETTINGS_PATH, 'utf-8');
+      const settings = JSON.parse(stripJsonComments(content));
+      return settings?.ui?.feedbackLastShownTimestamp ?? 0;
+    }
+  } catch (error) {
+    if (isNodeError(error) && error.code !== 'ENOENT') {
+      console.warn(
+        'Failed to read feedbackLastShownTimestamp from settings file:',
+        error,
+      );
+    }
+  }
+  return 0;
+};
+
+/**
+ * Check if we should show the feedback dialog based on fatigue mechanism
+ */
+const shouldShowFeedbackBasedOnFatigue = (): boolean => {
+  const feedbackLastShownTimestamp = getFeedbackLastShownTimestampFromFile();
+
+  const now = Date.now();
+  const timeSinceLastShown = now - feedbackLastShownTimestamp;
+  const cooldownMs = FEEDBACK_COOLDOWN_HOURS * 60 * 60 * 1000;
+
+  return timeSinceLastShown >= cooldownMs;
+};
+
+/**
+ * Check if the session meets the minimum requirements for showing feedback
+ * Either tool calls > 10 OR user messages > 5
+ */
+const meetsMinimumSessionRequirements = (
+  sessionStats: SessionStatsState,
+): boolean => {
+  const toolCallsCount = sessionStats.metrics.tools.totalCalls;
+  const userMessagesCount = sessionStats.promptCount;
+
+  return (
+    toolCallsCount > MIN_TOOL_CALLS || userMessagesCount > MIN_USER_MESSAGES
+  );
+};
+
+export interface UseFeedbackDialogProps {
+  config: Config;
+  settings: LoadedSettings;
+  streamingState: StreamingState;
+  history: HistoryItem[];
+  sessionStats: SessionStatsState;
+}
+
+export const useFeedbackDialog = ({
+  config,
+  settings,
+  streamingState,
+  history,
+  sessionStats,
+}: UseFeedbackDialogProps) => {
+  // Feedback dialog state
+  const [isFeedbackDialogOpen, setIsFeedbackDialogOpen] = useState(false);
+
+  const openFeedbackDialog = useCallback(() => {
+    setIsFeedbackDialogOpen(true);
+
+    // Record the timestamp when feedback dialog is shown (fire and forget)
+    settings.setValue(
+      SettingScope.User,
+      'ui.feedbackLastShownTimestamp',
+      Date.now(),
+    );
+  }, [settings]);
+
+  const closeFeedbackDialog = useCallback(
+    () => setIsFeedbackDialogOpen(false),
+    [],
+  );
+
+  const submitFeedback = useCallback(
+    (rating: number) => {
+      // Create and log the feedback event
+      const feedbackEvent = new UserFeedbackEvent(
+        sessionStats.sessionId,
+        rating as UserFeedbackRating,
+        config.getModel(),
+        config.getApprovalMode(),
+      );
+
+      logUserFeedback(config, feedbackEvent);
+      closeFeedbackDialog();
+    },
+    [config, sessionStats, closeFeedbackDialog],
+  );
+
+  useEffect(() => {
+    const checkAndShowFeedback = () => {
+      if (streamingState === StreamingState.Idle && history.length > 0) {
+        // Show feedback dialog if:
+        // 1. User is authenticated via QWEN_OAUTH
+        // 2. Qwen logger is enabled (required for feedback submission)
+        // 3. User feedback is enabled in settings
+        // 4. The last message is an AI response
+        // 5. Random chance (25% probability)
+        // 6. Meets minimum requirements (tool calls > 10 OR user messages > 5)
+        // 7. Fatigue mechanism allows showing (not shown recently across sessions)
+        if (
+          config.getAuthType() !== AuthType.QWEN_OAUTH ||
+          !config.getUsageStatisticsEnabled() ||
+          settings.merged.ui?.enableUserFeedback === false ||
+          !lastMessageIsAIResponse(history) ||
+          Math.random() > FEEDBACK_SHOW_PROBABILITY ||
+          !meetsMinimumSessionRequirements(sessionStats)
+        ) {
+          return;
+        }
+
+        // Check fatigue mechanism (synchronous)
+        if (shouldShowFeedbackBasedOnFatigue()) {
+          openFeedbackDialog();
+        }
+      }
+    };
+
+    checkAndShowFeedback();
+  }, [
+    streamingState,
+    history,
+    sessionStats,
+    isFeedbackDialogOpen,
+    openFeedbackDialog,
+    settings.merged.ui?.enableUserFeedback,
+    config,
+  ]);
+
+  return {
+    isFeedbackDialogOpen,
+    openFeedbackDialog,
+    closeFeedbackDialog,
+    submitFeedback,
+  };
+};

packages/cli/src/ui/keyMatchers.test.ts

@@ -38,10 +38,10 @@ describe('keyMatchers', () => {
     [Command.NAVIGATION_DOWN]: (key: Key) => key.name === 'down',
     [Command.ACCEPT_SUGGESTION]: (key: Key) =>
       key.name === 'tab' || (key.name === 'return' && !key.ctrl),
-    [Command.COMPLETION_UP]: (key: Key) =>
-      key.name === 'up' || (key.ctrl && key.name === 'p'),
-    [Command.COMPLETION_DOWN]: (key: Key) =>
-      key.name === 'down' || (key.ctrl && key.name === 'n'),
+    // Completion navigation only uses arrow keys (not Ctrl+P/N)
+    // to allow Ctrl+P/N to always navigate history
+    [Command.COMPLETION_UP]: (key: Key) => key.name === 'up',
+    [Command.COMPLETION_DOWN]: (key: Key) => key.name === 'down',
     [Command.ESCAPE]: (key: Key) => key.name === 'escape',
     [Command.SUBMIT]: (key: Key) =>
       key.name === 'return' && !key.ctrl && !key.meta && !key.paste,
@@ -164,14 +164,26 @@ describe('keyMatchers', () => {
       negative: [createKey('return', { ctrl: true }), createKey('space')],
     },
     {
+      // Completion navigation only uses arrow keys (not Ctrl+P/N)
+      // to allow Ctrl+P/N to always navigate history
       command: Command.COMPLETION_UP,
-      positive: [createKey('up'), createKey('p', { ctrl: true })],
-      negative: [createKey('p'), createKey('down')],
+      positive: [createKey('up')],
+      negative: [
+        createKey('p'),
+        createKey('down'),
+        createKey('p', { ctrl: true }),
+      ],
     },
     {
+      // Completion navigation only uses arrow keys (not Ctrl+P/N)
+      // to allow Ctrl+P/N to always navigate history
       command: Command.COMPLETION_DOWN,
-      positive: [createKey('down'), createKey('n', { ctrl: true })],
-      negative: [createKey('n'), createKey('up')],
+      positive: [createKey('down')],
+      negative: [
+        createKey('n'),
+        createKey('up'),
+        createKey('n', { ctrl: true }),
+      ],
     },
 
     // Text input

packages/cli/src/utils/modelConfigUtils.test.ts

@@ -0,0 +1,722 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
+import {
+  AuthType,
+  resolveModelConfig,
+  type ProviderModelConfig,
+} from '@qwen-code/qwen-code-core';
+import {
+  getAuthTypeFromEnv,
+  resolveCliGenerationConfig,
+} from './modelConfigUtils.js';
+import type { Settings } from '../config/settings.js';
+
+vi.mock('@qwen-code/qwen-code-core', async (importOriginal) => {
+  const original =
+    await importOriginal<typeof import('@qwen-code/qwen-code-core')>();
+  return {
+    ...original,
+    resolveModelConfig: vi.fn(),
+  };
+});
+
+describe('modelConfigUtils', () => {
+  describe('getAuthTypeFromEnv', () => {
+    const originalEnv = process.env;
+
+    beforeEach(() => {
+      vi.resetModules();
+      // Start with a clean env - getAuthTypeFromEnv only checks auth-related vars
+      process.env = {};
+    });
+
+    afterEach(() => {
+      process.env = originalEnv;
+    });
+
+    it('should return USE_OPENAI when all OpenAI env vars are set', () => {
+      process.env['OPENAI_API_KEY'] = 'test-key';
+      process.env['OPENAI_MODEL'] = 'gpt-4';
+      process.env['OPENAI_BASE_URL'] = 'https://api.openai.com';
+
+      expect(getAuthTypeFromEnv()).toBe(AuthType.USE_OPENAI);
+    });
+
+    it('should return undefined when OpenAI env vars are incomplete', () => {
+      process.env['OPENAI_API_KEY'] = 'test-key';
+      process.env['OPENAI_MODEL'] = 'gpt-4';
+      // Missing OPENAI_BASE_URL
+
+      expect(getAuthTypeFromEnv()).toBeUndefined();
+    });
+
+    it('should return QWEN_OAUTH when QWEN_OAUTH is set', () => {
+      process.env['QWEN_OAUTH'] = 'true';
+
+      expect(getAuthTypeFromEnv()).toBe(AuthType.QWEN_OAUTH);
+    });
+
+    it('should return USE_GEMINI when Gemini env vars are set', () => {
+      process.env['GEMINI_API_KEY'] = 'test-key';
+      process.env['GEMINI_MODEL'] = 'gemini-pro';
+
+      expect(getAuthTypeFromEnv()).toBe(AuthType.USE_GEMINI);
+    });
+
+    it('should return undefined when Gemini env vars are incomplete', () => {
+      process.env['GEMINI_API_KEY'] = 'test-key';
+      // Missing GEMINI_MODEL
+
+      expect(getAuthTypeFromEnv()).toBeUndefined();
+    });
+
+    it('should return USE_VERTEX_AI when Google env vars are set', () => {
+      process.env['GOOGLE_API_KEY'] = 'test-key';
+      process.env['GOOGLE_MODEL'] = 'vertex-model';
+
+      expect(getAuthTypeFromEnv()).toBe(AuthType.USE_VERTEX_AI);
+    });
+
+    it('should return undefined when Google env vars are incomplete', () => {
+      process.env['GOOGLE_API_KEY'] = 'test-key';
+      // Missing GOOGLE_MODEL
+
+      expect(getAuthTypeFromEnv()).toBeUndefined();
+    });
+
+    it('should return USE_ANTHROPIC when Anthropic env vars are set', () => {
+      process.env['ANTHROPIC_API_KEY'] = 'test-key';
+      process.env['ANTHROPIC_MODEL'] = 'claude-3';
+      process.env['ANTHROPIC_BASE_URL'] = 'https://api.anthropic.com';
+
+      expect(getAuthTypeFromEnv()).toBe(AuthType.USE_ANTHROPIC);
+    });
+
+    it('should return undefined when Anthropic env vars are incomplete', () => {
+      process.env['ANTHROPIC_API_KEY'] = 'test-key';
+      process.env['ANTHROPIC_MODEL'] = 'claude-3';
+      // Missing ANTHROPIC_BASE_URL
+
+      expect(getAuthTypeFromEnv()).toBeUndefined();
+    });
+
+    it('should prioritize QWEN_OAUTH over other auth types when explicitly set', () => {
+      process.env['QWEN_OAUTH'] = 'true';
+      process.env['OPENAI_API_KEY'] = 'test-key';
+      process.env['OPENAI_MODEL'] = 'gpt-4';
+      process.env['OPENAI_BASE_URL'] = 'https://api.openai.com';
+
+      // QWEN_OAUTH is checked first, so it should be returned even when other auth vars are set
+      expect(getAuthTypeFromEnv()).toBe(AuthType.QWEN_OAUTH);
+    });
+
+    it('should return undefined when no auth env vars are set', () => {
+      expect(getAuthTypeFromEnv()).toBeUndefined();
+    });
+  });
+
+  describe('resolveCliGenerationConfig', () => {
+    const originalEnv = process.env;
+    const originalConsoleWarn = console.warn;
+
+    beforeEach(() => {
+      vi.resetModules();
+      process.env = { ...originalEnv };
+      console.warn = vi.fn();
+    });
+
+    afterEach(() => {
+      process.env = originalEnv;
+      console.warn = originalConsoleWarn;
+      vi.clearAllMocks();
+    });
+
+    function makeMockSettings(overrides?: Partial<Settings>): Settings {
+      return {
+        model: { name: 'default-model' },
+        security: {
+          auth: {
+            apiKey: 'settings-api-key',
+            baseUrl: 'https://settings.example.com',
+          },
+        },
+        ...overrides,
+      } as Settings;
+    }
+
+    it('should resolve config from argv with highest precedence', () => {
+      const argv = {
+        model: 'argv-model',
+        openaiApiKey: 'argv-key',
+        openaiBaseUrl: 'https://argv.example.com',
+      };
+      const settings = makeMockSettings();
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'argv-model',
+          apiKey: 'argv-key',
+          baseUrl: 'https://argv.example.com',
+        },
+        sources: {
+          model: { kind: 'cli', detail: '--model' },
+          apiKey: { kind: 'cli', detail: '--openaiApiKey' },
+          baseUrl: { kind: 'cli', detail: '--openaiBaseUrl' },
+        },
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.model).toBe('argv-model');
+      expect(result.apiKey).toBe('argv-key');
+      expect(result.baseUrl).toBe('https://argv.example.com');
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          cli: {
+            model: 'argv-model',
+            apiKey: 'argv-key',
+            baseUrl: 'https://argv.example.com',
+          },
+        }),
+      );
+    });
+
+    it('should resolve config from settings when argv is not provided', () => {
+      const argv = {};
+      const settings = makeMockSettings({
+        model: { name: 'settings-model' },
+        security: {
+          auth: {
+            apiKey: 'settings-key',
+            baseUrl: 'https://settings.example.com',
+          },
+        },
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'settings-model',
+          apiKey: 'settings-key',
+          baseUrl: 'https://settings.example.com',
+        },
+        sources: {
+          model: { kind: 'settings', detail: 'model.name' },
+          apiKey: { kind: 'settings', detail: 'security.auth.apiKey' },
+          baseUrl: { kind: 'settings', detail: 'security.auth.baseUrl' },
+        },
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.model).toBe('settings-model');
+      expect(result.apiKey).toBe('settings-key');
+      expect(result.baseUrl).toBe('https://settings.example.com');
+    });
+
+    it('should merge generationConfig from settings', () => {
+      const argv = {};
+      const settings = makeMockSettings({
+        model: {
+          name: 'test-model',
+          generationConfig: {
+            samplingParams: {
+              temperature: 0.7,
+              max_tokens: 1000,
+            },
+            timeout: 5000,
+          } as Record<string, unknown>,
+        },
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: '',
+          baseUrl: '',
+          samplingParams: {
+            temperature: 0.7,
+            max_tokens: 1000,
+          },
+          timeout: 5000,
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.generationConfig.samplingParams?.temperature).toBe(0.7);
+      expect(result.generationConfig.samplingParams?.max_tokens).toBe(1000);
+      expect(result.generationConfig.timeout).toBe(5000);
+    });
+
+    it('should resolve OpenAI logging from argv', () => {
+      const argv = {
+        openaiLogging: true,
+        openaiLoggingDir: '/custom/log/dir',
+      };
+      const settings = makeMockSettings();
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.generationConfig.enableOpenAILogging).toBe(true);
+      expect(result.generationConfig.openAILoggingDir).toBe('/custom/log/dir');
+    });
+
+    it('should resolve OpenAI logging from settings when argv is undefined', () => {
+      const argv = {};
+      const settings = makeMockSettings({
+        model: {
+          name: 'test-model',
+          enableOpenAILogging: true,
+          openAILoggingDir: '/settings/log/dir',
+        },
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.generationConfig.enableOpenAILogging).toBe(true);
+      expect(result.generationConfig.openAILoggingDir).toBe(
+        '/settings/log/dir',
+      );
+    });
+
+    it('should default OpenAI logging to false when not provided', () => {
+      const argv = {};
+      const settings = makeMockSettings();
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.generationConfig.enableOpenAILogging).toBe(false);
+    });
+
+    it('should find modelProvider from settings when authType and model match', () => {
+      const argv = { model: 'provider-model' };
+      const modelProvider: ProviderModelConfig = {
+        id: 'provider-model',
+        name: 'Provider Model',
+        generationConfig: {
+          samplingParams: { temperature: 0.8 },
+        },
+      };
+      const settings = makeMockSettings({
+        modelProviders: {
+          [AuthType.USE_OPENAI]: [modelProvider],
+        },
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'provider-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          modelProvider,
+        }),
+      );
+    });
+
+    it('should find modelProvider from settings.model.name when argv.model is not provided', () => {
+      const argv = {};
+      const modelProvider: ProviderModelConfig = {
+        id: 'settings-model',
+        name: 'Settings Model',
+        generationConfig: {
+          samplingParams: { temperature: 0.9 },
+        },
+      };
+      const settings = makeMockSettings({
+        model: { name: 'settings-model' },
+        modelProviders: {
+          [AuthType.USE_OPENAI]: [modelProvider],
+        },
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'settings-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          modelProvider,
+        }),
+      );
+    });
+
+    it('should not find modelProvider when authType is undefined', () => {
+      const argv = { model: 'test-model' };
+      const settings = makeMockSettings({
+        modelProviders: {
+          [AuthType.USE_OPENAI]: [{ id: 'test-model', name: 'Test Model' }],
+        },
+      });
+      const selectedAuthType = undefined;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          modelProvider: undefined,
+        }),
+      );
+    });
+
+    it('should not find modelProvider when modelProviders is not an array', () => {
+      const argv = { model: 'test-model' };
+      const settings = makeMockSettings({
+        modelProviders: {
+          [AuthType.USE_OPENAI]: null as unknown as ProviderModelConfig[],
+        },
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          modelProvider: undefined,
+        }),
+      );
+    });
+
+    it('should log warnings from resolveModelConfig', () => {
+      const argv = {};
+      const settings = makeMockSettings();
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: ['Warning 1', 'Warning 2'],
+      });
+
+      resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(console.warn).toHaveBeenCalledWith('Warning 1');
+      expect(console.warn).toHaveBeenCalledWith('Warning 2');
+    });
+
+    it('should use custom env when provided', () => {
+      const argv = {};
+      const settings = makeMockSettings();
+      const selectedAuthType = AuthType.USE_OPENAI;
+      const customEnv = {
+        OPENAI_API_KEY: 'custom-key',
+        OPENAI_MODEL: 'custom-model',
+      };
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'custom-model',
+          apiKey: 'custom-key',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+        env: customEnv,
+      });
+
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          env: customEnv,
+        }),
+      );
+    });
+
+    it('should use process.env when env is not provided', () => {
+      const argv = {};
+      const settings = makeMockSettings();
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          env: process.env,
+        }),
+      );
+    });
+
+    it('should return empty strings for missing model, apiKey, and baseUrl', () => {
+      const argv = {};
+      const settings = makeMockSettings();
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: '',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.model).toBe('');
+      expect(result.apiKey).toBe('');
+      expect(result.baseUrl).toBe('');
+    });
+
+    it('should merge resolved config with logging settings', () => {
+      const argv = {
+        openaiLogging: true,
+      };
+      const settings = makeMockSettings({
+        model: {
+          name: 'test-model',
+          generationConfig: {
+            timeout: 5000,
+          } as Record<string, unknown>,
+        },
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: 'test-model',
+          apiKey: 'test-key',
+          baseUrl: 'https://test.com',
+          samplingParams: { temperature: 0.5 },
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.generationConfig).toEqual({
+        model: 'test-model',
+        apiKey: 'test-key',
+        baseUrl: 'https://test.com',
+        samplingParams: { temperature: 0.5 },
+        enableOpenAILogging: true,
+        openAILoggingDir: undefined,
+      });
+    });
+
+    it('should handle settings without model property', () => {
+      const argv = {};
+      const settings = makeMockSettings({
+        model: undefined as unknown as Settings['model'],
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: '',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      const result = resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(result.model).toBe('');
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          settings: expect.objectContaining({
+            model: undefined,
+          }),
+        }),
+      );
+    });
+
+    it('should handle settings without security.auth property', () => {
+      const argv = {};
+      const settings = makeMockSettings({
+        security: undefined,
+      });
+      const selectedAuthType = AuthType.USE_OPENAI;
+
+      vi.mocked(resolveModelConfig).mockReturnValue({
+        config: {
+          model: '',
+          apiKey: '',
+          baseUrl: '',
+        },
+        sources: {},
+        warnings: [],
+      });
+
+      resolveCliGenerationConfig({
+        argv,
+        settings,
+        selectedAuthType,
+      });
+
+      expect(vi.mocked(resolveModelConfig)).toHaveBeenCalledWith(
+        expect.objectContaining({
+          settings: expect.objectContaining({
+            apiKey: undefined,
+            baseUrl: undefined,
+          }),
+        }),
+      );
+    });
+  });
+});

packages/cli/src/utils/modelConfigUtils.ts

@@ -44,20 +44,31 @@ export interface ResolvedCliGenerationConfig {
 }
 
 export function getAuthTypeFromEnv(): AuthType | undefined {
-  if (process.env['OPENAI_API_KEY']) {
-    return AuthType.USE_OPENAI;
-  }
   if (process.env['QWEN_OAUTH']) {
     return AuthType.QWEN_OAUTH;
   }
 
-  if (process.env['GEMINI_API_KEY']) {
+  if (
+    process.env['OPENAI_API_KEY'] &&
+    process.env['OPENAI_MODEL'] &&
+    process.env['OPENAI_BASE_URL']
+  ) {
+    return AuthType.USE_OPENAI;
+  }
+
+  if (process.env['GEMINI_API_KEY'] && process.env['GEMINI_MODEL']) {
     return AuthType.USE_GEMINI;
   }
-  if (process.env['GOOGLE_API_KEY']) {
+
+  if (process.env['GOOGLE_API_KEY'] && process.env['GOOGLE_MODEL']) {
     return AuthType.USE_VERTEX_AI;
   }
-  if (process.env['ANTHROPIC_API_KEY']) {
+
+  if (
+    process.env['ANTHROPIC_API_KEY'] &&
+    process.env['ANTHROPIC_MODEL'] &&
+    process.env['ANTHROPIC_BASE_URL']
+  ) {
     return AuthType.USE_ANTHROPIC;
   }
 

packages/core/src/config/config.ts

@@ -708,12 +708,15 @@ export class Config {
    * Exclusive for `OpenAIKeyPrompt` to update credentials via `/auth`
    * Delegates to ModelsConfig.
    */
-  updateCredentials(credentials: {
-    apiKey?: string;
-    baseUrl?: string;
-    model?: string;
-  }): void {
-    this._modelsConfig.updateCredentials(credentials);
+  updateCredentials(
+    credentials: {
+      apiKey?: string;
+      baseUrl?: string;
+      model?: string;
+    },
+    settingsGenerationConfig?: Partial<ContentGeneratorConfig>,
+  ): void {
+    this._modelsConfig.updateCredentials(credentials, settingsGenerationConfig);
   }
 
   /**

packages/core/src/models/constants.ts

@@ -102,16 +102,14 @@ export const QWEN_OAUTH_ALLOWED_MODELS = [
 export const QWEN_OAUTH_MODELS: ModelConfig[] = [
   {
     id: 'coder-model',
-    name: 'Qwen Coder',
-    description:
-      'The latest Qwen Coder model from Alibaba Cloud ModelStudio (version: qwen3-coder-plus-2025-09-23)',
+    name: 'coder-model',
+    description: 'The latest Qwen Coder model from Alibaba Cloud ModelStudio',
     capabilities: { vision: false },
   },
   {
     id: 'vision-model',
-    name: 'Qwen Vision',
-    description:
-      'The latest Qwen Vision model from Alibaba Cloud ModelStudio (version: qwen3-vl-plus-2025-09-23)',
+    name: 'vision-model',
+    description: 'The latest Qwen Vision model from Alibaba Cloud ModelStudio',
     capabilities: { vision: true },
   },
 ];

packages/core/src/models/modelsConfig.test.ts

@@ -191,7 +191,7 @@ describe('ModelsConfig', () => {
     expect(gc.apiKeyEnvKey).toBe('API_KEY_SHARED');
   });
 
-  it('should preserve settings generationConfig when model is updated via updateCredentials even if it matches modelProviders', () => {
+  it('should use provider config when modelId exists in registry even after updateCredentials', () => {
     const modelProvidersConfig: ModelProvidersConfig = {
       openai: [
         {
@@ -213,7 +213,7 @@ describe('ModelsConfig', () => {
       initialAuthType: AuthType.USE_OPENAI,
       modelProvidersConfig,
       generationConfig: {
-        model: 'model-a',
+        model: 'custom-model',
         samplingParams: { temperature: 0.9, max_tokens: 999 },
         timeout: 9999,
         maxRetries: 9,
@@ -235,30 +235,30 @@ describe('ModelsConfig', () => {
       },
     });
 
-    // User manually updates the model via updateCredentials (e.g. key prompt flow).
-    // Even if the model ID matches a modelProviders entry, we must not apply provider defaults
-    // that would overwrite settings.model.generationConfig.
-    modelsConfig.updateCredentials({ model: 'model-a' });
+    // User manually updates credentials via updateCredentials.
+    // Note: In practice, handleAuthSelect prevents using a modelId that matches a provider model,
+    // but if syncAfterAuthRefresh is called with a modelId that exists in registry,
+    // we should use provider config.
+    modelsConfig.updateCredentials({ apiKey: 'manual-key' });
 
-    modelsConfig.syncAfterAuthRefresh(
-      AuthType.USE_OPENAI,
-      modelsConfig.getModel(),
-    );
+    // syncAfterAuthRefresh with a modelId that exists in registry should use provider config
+    modelsConfig.syncAfterAuthRefresh(AuthType.USE_OPENAI, 'model-a');
 
     const gc = currentGenerationConfig(modelsConfig);
     expect(gc.model).toBe('model-a');
-    expect(gc.samplingParams?.temperature).toBe(0.9);
-    expect(gc.samplingParams?.max_tokens).toBe(999);
-    expect(gc.timeout).toBe(9999);
-    expect(gc.maxRetries).toBe(9);
+    // Provider config should be applied
+    expect(gc.samplingParams?.temperature).toBe(0.1);
+    expect(gc.samplingParams?.max_tokens).toBe(123);
+    expect(gc.timeout).toBe(111);
+    expect(gc.maxRetries).toBe(1);
   });
 
-  it('should preserve settings generationConfig across multiple auth refreshes after updateCredentials', () => {
+  it('should preserve settings generationConfig when modelId does not exist in registry', () => {
     const modelProvidersConfig: ModelProvidersConfig = {
       openai: [
         {
-          id: 'model-a',
-          name: 'Model A',
+          id: 'provider-model',
+          name: 'Provider Model',
           baseUrl: 'https://api.example.com/v1',
           envKey: 'API_KEY_A',
           generationConfig: {
@@ -270,11 +270,12 @@ describe('ModelsConfig', () => {
       ],
     };
 
+    // Simulate settings with a custom model (not in registry)
     const modelsConfig = new ModelsConfig({
       initialAuthType: AuthType.USE_OPENAI,
       modelProvidersConfig,
       generationConfig: {
-        model: 'model-a',
+        model: 'custom-model',
         samplingParams: { temperature: 0.9, max_tokens: 999 },
         timeout: 9999,
         maxRetries: 9,
@@ -296,25 +297,21 @@ describe('ModelsConfig', () => {
       },
     });
 
+    // User manually sets credentials for a custom model (not in registry)
     modelsConfig.updateCredentials({
       apiKey: 'manual-key',
       baseUrl: 'https://manual.example.com/v1',
-      model: 'model-a',
+      model: 'custom-model',
     });
 
-    // First auth refresh
-    modelsConfig.syncAfterAuthRefresh(
-      AuthType.USE_OPENAI,
-      modelsConfig.getModel(),
-    );
+    // First auth refresh - modelId doesn't exist in registry, so credentials should be preserved
+    modelsConfig.syncAfterAuthRefresh(AuthType.USE_OPENAI, 'custom-model');
     // Second auth refresh should still preserve settings generationConfig
-    modelsConfig.syncAfterAuthRefresh(
-      AuthType.USE_OPENAI,
-      modelsConfig.getModel(),
-    );
+    modelsConfig.syncAfterAuthRefresh(AuthType.USE_OPENAI, 'custom-model');
 
     const gc = currentGenerationConfig(modelsConfig);
-    expect(gc.model).toBe('model-a');
+    expect(gc.model).toBe('custom-model');
+    // Settings-sourced generation config should be preserved since modelId doesn't exist in registry
     expect(gc.samplingParams?.temperature).toBe(0.9);
     expect(gc.samplingParams?.max_tokens).toBe(999);
     expect(gc.timeout).toBe(9999);
@@ -681,4 +678,120 @@ describe('ModelsConfig', () => {
     expect(modelsConfig.getModel()).toBe('updated-model');
     expect(modelsConfig.getGenerationConfig().model).toBe('updated-model');
   });
+
+  describe('getAllAvailableModels', () => {
+    it('should return all models across all authTypes', () => {
+      const modelProvidersConfig: ModelProvidersConfig = {
+        openai: [
+          {
+            id: 'openai-model-1',
+            name: 'OpenAI Model 1',
+            baseUrl: 'https://api.openai.com/v1',
+            envKey: 'OPENAI_API_KEY',
+          },
+          {
+            id: 'openai-model-2',
+            name: 'OpenAI Model 2',
+            baseUrl: 'https://api.openai.com/v1',
+            envKey: 'OPENAI_API_KEY',
+          },
+        ],
+        anthropic: [
+          {
+            id: 'anthropic-model-1',
+            name: 'Anthropic Model 1',
+            baseUrl: 'https://api.anthropic.com/v1',
+            envKey: 'ANTHROPIC_API_KEY',
+          },
+        ],
+        gemini: [
+          {
+            id: 'gemini-model-1',
+            name: 'Gemini Model 1',
+            baseUrl: 'https://generativelanguage.googleapis.com/v1',
+            envKey: 'GEMINI_API_KEY',
+          },
+        ],
+      };
+
+      const modelsConfig = new ModelsConfig({
+        modelProvidersConfig,
+      });
+
+      const allModels = modelsConfig.getAllAvailableModels();
+
+      // Should include qwen-oauth models (hard-coded)
+      const qwenModels = allModels.filter(
+        (m) => m.authType === AuthType.QWEN_OAUTH,
+      );
+      expect(qwenModels.length).toBeGreaterThan(0);
+
+      // Should include openai models
+      const openaiModels = allModels.filter(
+        (m) => m.authType === AuthType.USE_OPENAI,
+      );
+      expect(openaiModels.length).toBe(2);
+      expect(openaiModels.map((m) => m.id)).toContain('openai-model-1');
+      expect(openaiModels.map((m) => m.id)).toContain('openai-model-2');
+
+      // Should include anthropic models
+      const anthropicModels = allModels.filter(
+        (m) => m.authType === AuthType.USE_ANTHROPIC,
+      );
+      expect(anthropicModels.length).toBe(1);
+      expect(anthropicModels[0].id).toBe('anthropic-model-1');
+
+      // Should include gemini models
+      const geminiModels = allModels.filter(
+        (m) => m.authType === AuthType.USE_GEMINI,
+      );
+      expect(geminiModels.length).toBe(1);
+      expect(geminiModels[0].id).toBe('gemini-model-1');
+    });
+
+    it('should return empty array when no models are registered', () => {
+      const modelsConfig = new ModelsConfig();
+
+      const allModels = modelsConfig.getAllAvailableModels();
+
+      // Should still include qwen-oauth models (hard-coded)
+      expect(allModels.length).toBeGreaterThan(0);
+      const qwenModels = allModels.filter(
+        (m) => m.authType === AuthType.QWEN_OAUTH,
+      );
+      expect(qwenModels.length).toBeGreaterThan(0);
+    });
+
+    it('should return models with correct structure', () => {
+      const modelProvidersConfig: ModelProvidersConfig = {
+        openai: [
+          {
+            id: 'test-model',
+            name: 'Test Model',
+            description: 'A test model',
+            baseUrl: 'https://api.example.com/v1',
+            envKey: 'TEST_API_KEY',
+            capabilities: {
+              vision: true,
+            },
+          },
+        ],
+      };
+
+      const modelsConfig = new ModelsConfig({
+        modelProvidersConfig,
+      });
+
+      const allModels = modelsConfig.getAllAvailableModels();
+      const testModel = allModels.find((m) => m.id === 'test-model');
+
+      expect(testModel).toBeDefined();
+      expect(testModel?.id).toBe('test-model');
+      expect(testModel?.label).toBe('Test Model');
+      expect(testModel?.description).toBe('A test model');
+      expect(testModel?.authType).toBe(AuthType.USE_OPENAI);
+      expect(testModel?.isVision).toBe(true);
+      expect(testModel?.capabilities?.vision).toBe(true);
+    });
+  });
 });

packages/core/src/models/modelsConfig.ts

@@ -203,6 +203,18 @@ export class ModelsConfig {
     return this.modelRegistry.getModelsForAuthType(authType);
   }
 
+  /**
+   * Get all available models across all authTypes
+   */
+  getAllAvailableModels(): AvailableModel[] {
+    const allModels: AvailableModel[] = [];
+    for (const authType of Object.values(AuthType)) {
+      const models = this.modelRegistry.getModelsForAuthType(authType);
+      allModels.push(...models);
+    }
+    return allModels;
+  }
+
   /**
    * Check if a model exists for the given authType
    */
@@ -307,6 +319,33 @@ export class ModelsConfig {
     return this.generationConfigSources;
   }
 
+  /**
+   * Merge settings generation config, preserving existing values.
+   * Used when provider-sourced config is cleared but settings should still apply.
+   */
+  mergeSettingsGenerationConfig(
+    settingsGenerationConfig?: Partial<ContentGeneratorConfig>,
+  ): void {
+    if (!settingsGenerationConfig) {
+      return;
+    }
+
+    for (const field of MODEL_GENERATION_CONFIG_FIELDS) {
+      if (
+        !(field in this._generationConfig) &&
+        field in settingsGenerationConfig
+      ) {
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        (this._generationConfig as any)[field] =
+          settingsGenerationConfig[field];
+        this.generationConfigSources[field] = {
+          kind: 'settings',
+          detail: `model.generationConfig.${field}`,
+        };
+      }
+    }
+  }
+
   /**
    * Update credentials in generation config.
    * Sets a flag to prevent syncAfterAuthRefresh from overriding these credentials.
@@ -314,12 +353,20 @@ export class ModelsConfig {
    * When credentials are manually set, we clear all provider-sourced configuration
    * to maintain provider atomicity (either fully applied or not at all).
    * Other layers (CLI, env, settings, defaults) will participate in resolve.
+   *
+   * @param settingsGenerationConfig Optional generation config from settings.json
+   *                                  to merge after clearing provider-sourced config.
+   *                                  This ensures settings.model.generationConfig fields
+   *                                  (e.g., samplingParams, timeout) are preserved.
    */
-  updateCredentials(credentials: {
-    apiKey?: string;
-    baseUrl?: string;
-    model?: string;
-  }): void {
+  updateCredentials(
+    credentials: {
+      apiKey?: string;
+      baseUrl?: string;
+      model?: string;
+    },
+    settingsGenerationConfig?: Partial<ContentGeneratorConfig>,
+  ): void {
     /**
      * If any fields are updated here, we treat the resulting config as manually overridden
      * and avoid applying modelProvider defaults during the next auth refresh.
@@ -359,6 +406,14 @@ export class ModelsConfig {
     this.strictModelProviderSelection = false;
     // Clear apiKeyEnvKey to prevent validation from requiring environment variable
     this._generationConfig.apiKeyEnvKey = undefined;
+
+    // After clearing provider-sourced config, merge settings.model.generationConfig
+    // to ensure fields like samplingParams, timeout, etc. are preserved.
+    // This follows the resolution strategy where settings.model.generationConfig
+    // has lower priority than programmatic overrides but should still be applied.
+    if (settingsGenerationConfig) {
+      this.mergeSettingsGenerationConfig(settingsGenerationConfig);
+    }
   }
 
   /**
@@ -587,50 +642,88 @@ export class ModelsConfig {
   }
 
   /**
-   * Called by Config.refreshAuth to sync state after auth refresh.
-   *
-   * IMPORTANT: If credentials were manually set via updateCredentials(),
-   * we should NOT override them with modelProvider defaults.
-   * This handles the case where user inputs credentials via OpenAIKeyPrompt
-   * after removing environment variables for a previously selected model.
+   * Sync state after auth refresh with fallback strategy:
+   * 1. If modelId can be found in modelRegistry, use the config from modelRegistry.
+   * 2. Otherwise, if existing credentials exist in resolved generationConfig from other sources
+   *    (not modelProviders), preserve them and update authType/modelId only.
+   * 3. Otherwise, fall back to default model for the authType.
+   * 4. If no default is available, leave the generationConfig incomplete and let
+   *    resolveContentGeneratorConfigWithSources throw exceptions as expected.
    */
   syncAfterAuthRefresh(authType: AuthType, modelId?: string): void {
-    // Check if we have manually set credentials that should be preserved
-    const preserveManualCredentials = this.hasManualCredentials;
+    this.strictModelProviderSelection = false;
+    const previousAuthType = this.currentAuthType;
+    this.currentAuthType = authType;
 
-    // If credentials were manually set, don't apply modelProvider defaults
-    // Just update the authType and preserve the manually set credentials
-    if (preserveManualCredentials && authType === AuthType.USE_OPENAI) {
-      this.strictModelProviderSelection = false;
-      this.currentAuthType = authType;
+    // Step 1: If modelId exists in registry, always use config from modelRegistry
+    // Manual credentials won't have a modelId that matches a provider model (handleAuthSelect prevents it),
+    // so if modelId exists in registry, we should always use provider config.
+    // This handles provider switching even within the same authType.
+    if (modelId && this.modelRegistry.hasModel(authType, modelId)) {
+      const resolved = this.modelRegistry.getModel(authType, modelId);
+      if (resolved) {
+        this.applyResolvedModelDefaults(resolved);
+        this.strictModelProviderSelection = true;
+        return;
+      }
+    }
+
+    // Step 2: Check if there are existing credentials from other sources (not modelProviders)
+    const apiKeySource = this.generationConfigSources['apiKey'];
+    const baseUrlSource = this.generationConfigSources['baseUrl'];
+    const hasExistingCredentials =
+      (this._generationConfig.apiKey &&
+        apiKeySource?.kind !== 'modelProviders') ||
+      (this._generationConfig.baseUrl &&
+        baseUrlSource?.kind !== 'modelProviders');
+
+    // Only preserve credentials if:
+    // 1. AuthType hasn't changed (credentials are authType-specific), AND
+    // 2. The modelId doesn't exist in the registry (if it did, we would have used provider config in Step 1), AND
+    // 3. Either:
+    //    a. We have manual credentials (set via updateCredentials), OR
+    //    b. We have existing credentials
+    // Note: Even if authType hasn't changed, switching to a different provider model (that exists in registry)
+    // will use provider config (Step 1), not preserve old credentials. This ensures credentials change when
+    // switching providers, independent of authType changes.
+    const isAuthTypeChange = previousAuthType !== authType;
+    const shouldPreserveCredentials =
+      !isAuthTypeChange &&
+      (modelId === undefined ||
+        !this.modelRegistry.hasModel(authType, modelId)) &&
+      (this.hasManualCredentials || hasExistingCredentials);
+
+    if (shouldPreserveCredentials) {
+      // Preserve existing credentials, just update authType and modelId if provided
       if (modelId) {
         this._generationConfig.model = modelId;
+        if (!this.generationConfigSources['model']) {
+          this.generationConfigSources['model'] = {
+            kind: 'programmatic',
+            detail: 'auth refresh (preserved credentials)',
+          };
+        }
       }
       return;
     }
 
-    this.strictModelProviderSelection = false;
+    // Step 3: Fall back to default model for the authType
+    const defaultModel =
+      this.modelRegistry.getDefaultModelForAuthType(authType);
+    if (defaultModel) {
+      this.applyResolvedModelDefaults(defaultModel);
+      return;
+    }
 
-    if (modelId && this.modelRegistry.hasModel(authType, modelId)) {
-      const resolved = this.modelRegistry.getModel(authType, modelId);
-      if (resolved) {
-        // Ensure applyResolvedModelDefaults can correctly apply authType-specific
-        // behavior (e.g., Qwen OAuth placeholder token) by setting currentAuthType
-        // before applying defaults.
-        this.currentAuthType = authType;
-        this.applyResolvedModelDefaults(resolved);
-      }
-    } else {
-      // If the provided modelId doesn't exist in the registry for the new authType,
-      // use the default model for that authType instead of keeping the old model.
-      // This handles the case where switching from one authType (e.g., OPENAI with
-      // env vars) to another (e.g., qwen-oauth) - we should use the default model
-      // for the new authType, not the old model.
-      this.currentAuthType = authType;
-      const defaultModel =
-        this.modelRegistry.getDefaultModelForAuthType(authType);
-      if (defaultModel) {
-        this.applyResolvedModelDefaults(defaultModel);
+    // Step 4: No default available - leave generationConfig incomplete
+    // resolveContentGeneratorConfigWithSources will throw exceptions as expected
+    if (modelId) {
+      this._generationConfig.model = modelId;
+      if (!this.generationConfigSources['model']) {
+        this.generationConfigSources['model'] = {
+          kind: 'programmatic',
+          detail: 'auth refresh (no default model)',
+        };
       }
     }
   }

packages/core/src/qwen/qwenOAuth2.test.ts

@@ -751,6 +751,7 @@ describe('getQwenOAuthClient', () => {
   beforeEach(() => {
     mockConfig = {
       isBrowserLaunchSuppressed: vi.fn().mockReturnValue(false),
+      isInteractive: vi.fn().mockReturnValue(true),
     } as unknown as Config;
 
     originalFetch = global.fetch;
@@ -839,9 +840,7 @@ describe('getQwenOAuthClient', () => {
           requireCachedCredentials: true,
         }),
       ),
-    ).rejects.toThrow(
-      'No cached Qwen-OAuth credentials found. Please re-authenticate.',
-    );
+    ).rejects.toThrow('Please use /auth to re-authenticate.');
 
     expect(global.fetch).not.toHaveBeenCalled();
 
@@ -1007,6 +1006,7 @@ describe('getQwenOAuthClient - Enhanced Error Scenarios', () => {
   beforeEach(() => {
     mockConfig = {
       isBrowserLaunchSuppressed: vi.fn().mockReturnValue(false),
+      isInteractive: vi.fn().mockReturnValue(true),
     } as unknown as Config;
 
     originalFetch = global.fetch;
@@ -1202,6 +1202,7 @@ describe('authWithQwenDeviceFlow - Comprehensive Testing', () => {
   beforeEach(() => {
     mockConfig = {
       isBrowserLaunchSuppressed: vi.fn().mockReturnValue(false),
+      isInteractive: vi.fn().mockReturnValue(true),
     } as unknown as Config;
 
     originalFetch = global.fetch;
@@ -1405,6 +1406,7 @@ describe('Browser Launch and Error Handling', () => {
   beforeEach(() => {
     mockConfig = {
       isBrowserLaunchSuppressed: vi.fn().mockReturnValue(false),
+      isInteractive: vi.fn().mockReturnValue(true),
     } as unknown as Config;
 
     originalFetch = global.fetch;
@@ -2043,6 +2045,7 @@ describe('SharedTokenManager Integration in QwenOAuth2Client', () => {
   it('should handle TokenManagerError types correctly in getQwenOAuthClient', async () => {
     const mockConfig = {
       isBrowserLaunchSuppressed: vi.fn().mockReturnValue(true),
+      isInteractive: vi.fn().mockReturnValue(true),
     } as unknown as Config;
 
     // Test different TokenManagerError types

packages/core/src/qwen/qwenOAuth2.ts

@@ -516,9 +516,7 @@ export async function getQwenOAuthClient(
     }
 
     if (options?.requireCachedCredentials) {
-      throw new Error(
-        'No cached Qwen-OAuth credentials found. Please re-authenticate.',
-      );
+      throw new Error('Please use /auth to re-authenticate.');
     }
 
     // If we couldn't obtain valid credentials via SharedTokenManager, fall back to
@@ -740,11 +738,9 @@ async function authWithQwenDeviceFlow(
     // Emit device authorization event for UI integration immediately
     qwenOAuth2Events.emit(QwenOAuth2Event.AuthUri, deviceAuth);
 
-    // Always show the fallback message in non-interactive environments to ensure
-    // users can see the authorization URL even if browser launching is attempted.
-    // This is critical for headless/remote environments where browser launching
-    // may silently fail without throwing an error.
-    showFallbackMessage(deviceAuth.verification_uri_complete);
+    if (config.isBrowserLaunchSuppressed() || !config.isInteractive()) {
+      showFallbackMessage(deviceAuth.verification_uri_complete);
+    }
 
     // Try to open browser if not suppressed
     if (!config.isBrowserLaunchSuppressed()) {

packages/core/src/telemetry/constants.ts

@@ -35,6 +35,7 @@ export const EVENT_MODEL_SLASH_COMMAND = 'qwen-code.slash_command.model';
 export const EVENT_SUBAGENT_EXECUTION = 'qwen-code.subagent_execution';
 export const EVENT_SKILL_LAUNCH = 'qwen-code.skill_launch';
 export const EVENT_AUTH = 'qwen-code.auth';
+export const EVENT_USER_FEEDBACK = 'qwen-code.user_feedback';
 
 // Performance Events
 export const EVENT_STARTUP_PERFORMANCE = 'qwen-code.startup.performance';

packages/core/src/telemetry/index.ts

@@ -45,6 +45,7 @@ export {
   logNextSpeakerCheck,
   logAuth,
   logSkillLaunch,
+  logUserFeedback,
 } from './loggers.js';
 export type { SlashCommandEvent, ChatCompressionEvent } from './types.js';
 export {
@@ -65,6 +66,8 @@ export {
   NextSpeakerCheckEvent,
   AuthEvent,
   SkillLaunchEvent,
+  UserFeedbackEvent,
+  UserFeedbackRating,
 } from './types.js';
 export { makeSlashCommandEvent, makeChatCompressionEvent } from './types.js';
 export type { TelemetryEvent } from './types.js';

packages/core/src/telemetry/loggers.ts

@@ -38,6 +38,7 @@ import {
   EVENT_INVALID_CHUNK,
   EVENT_AUTH,
   EVENT_SKILL_LAUNCH,
+  EVENT_USER_FEEDBACK,
 } from './constants.js';
 import {
   recordApiErrorMetrics,
@@ -86,6 +87,7 @@ import type {
   InvalidChunkEvent,
   AuthEvent,
   SkillLaunchEvent,
+  UserFeedbackEvent,
 } from './types.js';
 import type { UiEvent } from './uiTelemetry.js';
 import { uiTelemetryService } from './uiTelemetry.js';
@@ -887,3 +889,32 @@ export function logSkillLaunch(config: Config, event: SkillLaunchEvent): void {
   };
   logger.emit(logRecord);
 }
+
+export function logUserFeedback(
+  config: Config,
+  event: UserFeedbackEvent,
+): void {
+  const uiEvent = {
+    ...event,
+    'event.name': EVENT_USER_FEEDBACK,
+    'event.timestamp': new Date().toISOString(),
+  } as UiEvent;
+  uiTelemetryService.addEvent(uiEvent);
+  config.getChatRecordingService()?.recordUiTelemetryEvent(uiEvent);
+  QwenLogger.getInstance(config)?.logUserFeedbackEvent(event);
+  if (!isTelemetrySdkInitialized()) return;
+
+  const attributes: LogAttributes = {
+    ...getCommonAttributes(config),
+    ...event,
+    'event.name': EVENT_USER_FEEDBACK,
+    'event.timestamp': new Date().toISOString(),
+  };
+
+  const logger = logs.getLogger(SERVICE_NAME);
+  const logRecord: LogRecord = {
+    body: `User feedback: Rating ${event.rating} for session ${event.session_id}.`,
+    attributes,
+  };
+  logger.emit(logRecord);
+}

packages/core/src/telemetry/qwen-logger/qwen-logger.ts

@@ -39,6 +39,7 @@ import type {
   ExtensionDisableEvent,
   AuthEvent,
   SkillLaunchEvent,
+  UserFeedbackEvent,
   RipgrepFallbackEvent,
   EndSessionEvent,
 } from '../types.js';
@@ -842,6 +843,21 @@ export class QwenLogger {
     this.flushIfNeeded();
   }
 
+  logUserFeedbackEvent(event: UserFeedbackEvent): void {
+    const rumEvent = this.createActionEvent('user', 'user_feedback', {
+      properties: {
+        session_id: event.session_id,
+        rating: event.rating,
+        model: event.model,
+        approval_mode: event.approval_mode,
+        prompt_id: event.prompt_id || '',
+      },
+    });
+
+    this.enqueueLogEvent(rumEvent);
+    this.flushIfNeeded();
+  }
+
   logChatCompressionEvent(event: ChatCompressionEvent): void {
     const rumEvent = this.createActionEvent('misc', 'chat_compression', {
       properties: {

packages/core/src/telemetry/types.ts

@@ -757,6 +757,38 @@ export class SkillLaunchEvent implements BaseTelemetryEvent {
   }
 }
 
+export enum UserFeedbackRating {
+  BAD = 1,
+  FINE = 2,
+  GOOD = 3,
+}
+
+export class UserFeedbackEvent implements BaseTelemetryEvent {
+  'event.name': 'user_feedback';
+  'event.timestamp': string;
+  session_id: string;
+  rating: UserFeedbackRating;
+  model: string;
+  approval_mode: string;
+  prompt_id?: string;
+
+  constructor(
+    session_id: string,
+    rating: UserFeedbackRating,
+    model: string,
+    approval_mode: string,
+    prompt_id?: string,
+  ) {
+    this['event.name'] = 'user_feedback';
+    this['event.timestamp'] = new Date().toISOString();
+    this.session_id = session_id;
+    this.rating = rating;
+    this.model = model;
+    this.approval_mode = approval_mode;
+    this.prompt_id = prompt_id;
+  }
+}
+
 export type TelemetryEvent =
   | StartSessionEvent
   | EndSessionEvent
@@ -786,7 +818,8 @@ export type TelemetryEvent =
   | ToolOutputTruncatedEvent
   | ModelSlashCommandEvent
   | AuthEvent
-  | SkillLaunchEvent;
+  | SkillLaunchEvent
+  | UserFeedbackEvent;
 
 export class ExtensionDisableEvent implements BaseTelemetryEvent {
   'event.name': 'extension_disable';

packages/vscode-ide-companion/src/constants/acpSchema.ts

@@ -23,3 +23,23 @@ export const CLIENT_METHODS = {
   session_request_permission: 'session/request_permission',
   session_update: 'session/update',
 } as const;
+
+export const ACP_ERROR_CODES = {
+  // Parse error: invalid JSON received by server.
+  PARSE_ERROR: -32700,
+  // Invalid request: JSON is not a valid Request object.
+  INVALID_REQUEST: -32600,
+  // Method not found: method does not exist or is unavailable.
+  METHOD_NOT_FOUND: -32601,
+  // Invalid params: invalid method parameter(s).
+  INVALID_PARAMS: -32602,
+  // Internal error: implementation-defined server error.
+  INTERNAL_ERROR: -32603,
+  // Authentication required: must authenticate before operation.
+  AUTH_REQUIRED: -32000,
+  // Resource not found: e.g. missing file.
+  RESOURCE_NOT_FOUND: -32002,
+} as const;
+
+export type AcpErrorCode =
+  (typeof ACP_ERROR_CODES)[keyof typeof ACP_ERROR_CODES];

packages/vscode-ide-companion/src/ide-server.ts

@@ -28,6 +28,7 @@ import * as os from 'node:os';
 import type { z } from 'zod';
 import type { DiffManager } from './diff-manager.js';
 import { OpenFilesManager } from './open-files-manager.js';
+import { ACP_ERROR_CODES } from './constants/acpSchema.js';
 
 class CORSError extends Error {
   constructor(message: string) {
@@ -264,7 +265,7 @@ export class IDEServer {
           res.status(400).json({
             jsonrpc: '2.0',
             error: {
-              code: -32000,
+              code: ACP_ERROR_CODES.AUTH_REQUIRED,
               message:
                 'Bad Request: No valid session ID provided for non-initialize request.',
             },
@@ -283,7 +284,7 @@ export class IDEServer {
             res.status(500).json({
               jsonrpc: '2.0' as const,
               error: {
-                code: -32603,
+                code: ACP_ERROR_CODES.INTERNAL_ERROR,
                 message: 'Internal server error',
               },
               id: null,

packages/vscode-ide-companion/src/services/acpConnection.ts

@@ -5,6 +5,7 @@
  */
 
 import { JSONRPC_VERSION } from '../types/acpTypes.js';
+import { ACP_ERROR_CODES } from '../constants/acpSchema.js';
 import type {
   AcpMessage,
   AcpPermissionRequest,
@@ -232,12 +233,34 @@ export class AcpConnection {
         })
         .catch((error) => {
           if ('id' in message && typeof message.id === 'number') {
+            const errorMessage =
+              error instanceof Error
+                ? error.message
+                : typeof error === 'object' &&
+                    error !== null &&
+                    'message' in error &&
+                    typeof (error as { message: unknown }).message === 'string'
+                  ? (error as { message: string }).message
+                  : String(error);
+
+            let errorCode: number = ACP_ERROR_CODES.INTERNAL_ERROR;
+            const errorCodeValue =
+              typeof error === 'object' && error !== null && 'code' in error
+                ? (error as { code?: unknown }).code
+                : undefined;
+
+            if (typeof errorCodeValue === 'number') {
+              errorCode = errorCodeValue;
+            } else if (errorCodeValue === 'ENOENT') {
+              errorCode = ACP_ERROR_CODES.RESOURCE_NOT_FOUND;
+            }
+
             this.messageHandler.sendResponseMessage(this.child, {
               jsonrpc: JSONRPC_VERSION,
               id: message.id,
               error: {
-                code: -32603,
-                message: error instanceof Error ? error.message : String(error),
+                code: errorCode,
+                message: errorMessage,
               },
             });
           }

packages/vscode-ide-companion/src/services/acpFileHandler.ts

@@ -66,6 +66,11 @@ export class AcpFileHandler {
       const errorMsg = error instanceof Error ? error.message : String(error);
       console.error(`[ACP] Failed to read file ${params.path}:`, errorMsg);
 
+      const nodeError = error as NodeJS.ErrnoException;
+      if (nodeError?.code === 'ENOENT') {
+        throw error;
+      }
+
       throw new Error(`Failed to read file '${params.path}': ${errorMsg}`);
     }
   }

packages/vscode-ide-companion/src/utils/authErrors.ts

@@ -4,9 +4,11 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
+import { ACP_ERROR_CODES } from '../constants/acpSchema.js';
+
 const AUTH_ERROR_PATTERNS = [
   'Authentication required', // Standard authentication request message
-  '(code: -32000)', // RPC error code -32000 indicates authentication failure
+  `(code: ${ACP_ERROR_CODES.AUTH_REQUIRED})`, // RPC error code indicates auth failure
   'Unauthorized', // HTTP unauthorized error
   'Invalid token', // Invalid token
   'Session expired', // Session expired

packages/vscode-ide-companion/src/webview/handlers/SessionMessageHandler.ts

@@ -8,6 +8,9 @@ import * as vscode from 'vscode';
 import { BaseMessageHandler } from './BaseMessageHandler.js';
 import type { ChatMessage } from '../../services/qwenAgentManager.js';
 import type { ApprovalModeValue } from '../../types/approvalModeValueTypes.js';
+import { ACP_ERROR_CODES } from '../../constants/acpSchema.js';
+
+const AUTH_REQUIRED_CODE_PATTERN = `(code: ${ACP_ERROR_CODES.AUTH_REQUIRED})`;
 
 /**
  * Session message handler
@@ -355,7 +358,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
           createErr instanceof Error ? createErr.message : String(createErr);
         if (
           errorMsg.includes('Authentication required') ||
-          errorMsg.includes('(code: -32000)')
+          errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN)
         ) {
           await this.promptLogin(
             'Your login session has expired or is invalid. Please login again to continue using Qwen Code.',
@@ -421,7 +424,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
         errorMsg.includes('Session not found') ||
         errorMsg.includes('No active ACP session') ||
         errorMsg.includes('Authentication required') ||
-        errorMsg.includes('(code: -32000)') ||
+        errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
         errorMsg.includes('Unauthorized') ||
         errorMsg.includes('Invalid token')
       ) {
@@ -512,7 +515,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
       // Check for authentication/session expiration errors
       if (
         errorMsg.includes('Authentication required') ||
-        errorMsg.includes('(code: -32000)') ||
+        errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
         errorMsg.includes('Unauthorized') ||
         errorMsg.includes('Invalid token') ||
         errorMsg.includes('No active ACP session')
@@ -622,7 +625,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
         // Check for authentication/session expiration errors
         if (
           errorMsg.includes('Authentication required') ||
-          errorMsg.includes('(code: -32000)') ||
+          errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
           errorMsg.includes('Unauthorized') ||
           errorMsg.includes('Invalid token') ||
           errorMsg.includes('No active ACP session')
@@ -682,7 +685,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
             // Check for authentication/session expiration errors in session creation
             if (
               createErrorMsg.includes('Authentication required') ||
-              createErrorMsg.includes('(code: -32000)') ||
+              createErrorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
               createErrorMsg.includes('Unauthorized') ||
               createErrorMsg.includes('Invalid token') ||
               createErrorMsg.includes('No active ACP session')
@@ -722,7 +725,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
       // Check for authentication/session expiration errors
       if (
         errorMsg.includes('Authentication required') ||
-        errorMsg.includes('(code: -32000)') ||
+        errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
         errorMsg.includes('Unauthorized') ||
         errorMsg.includes('Invalid token') ||
         errorMsg.includes('No active ACP session')
@@ -777,7 +780,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
       // Check for authentication/session expiration errors
       if (
         errorMsg.includes('Authentication required') ||
-        errorMsg.includes('(code: -32000)') ||
+        errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
         errorMsg.includes('Unauthorized') ||
         errorMsg.includes('Invalid token') ||
         errorMsg.includes('No active ACP session')
@@ -827,7 +830,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
         // Check for authentication/session expiration errors
         if (
           errorMsg.includes('Authentication required') ||
-          errorMsg.includes('(code: -32000)') ||
+          errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
           errorMsg.includes('Unauthorized') ||
           errorMsg.includes('Invalid token') ||
           errorMsg.includes('No active ACP session')
@@ -855,7 +858,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
       // Check for authentication/session expiration errors
       if (
         errorMsg.includes('Authentication required') ||
-        errorMsg.includes('(code: -32000)') ||
+        errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
         errorMsg.includes('Unauthorized') ||
         errorMsg.includes('Invalid token') ||
         errorMsg.includes('No active ACP session')
@@ -961,7 +964,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
         // Check for authentication/session expiration errors
         if (
           errorMsg.includes('Authentication required') ||
-          errorMsg.includes('(code: -32000)') ||
+          errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
           errorMsg.includes('Unauthorized') ||
           errorMsg.includes('Invalid token') ||
           errorMsg.includes('No active ACP session')
@@ -989,7 +992,7 @@ export class SessionMessageHandler extends BaseMessageHandler {
       // Check for authentication/session expiration errors
       if (
         errorMsg.includes('Authentication required') ||
-        errorMsg.includes('(code: -32000)') ||
+        errorMsg.includes(AUTH_REQUIRED_CODE_PATTERN) ||
         errorMsg.includes('Unauthorized') ||
         errorMsg.includes('Invalid token') ||
         errorMsg.includes('No active ACP session')