chore: sync gemini-cli v0.1.19

docs/cli/configuration.md

@@ -272,6 +272,25 @@ In addition to a project settings file, a project's `.gemini` directory can cont
   - **Description:** API key for Tavily web search service. Required to enable the `web_search` tool functionality. If not configured, the web search tool will be disabled and skipped.
   - **Default:** `undefined` (web search disabled)
   - **Example:** `"tavilyApiKey": "tvly-your-api-key-here"`
+- **`chatCompression`** (object):
+  - **Description:** Controls the settings for chat history compression, both automatic and
+    when manually invoked through the /compress command.
+  - **Properties:**
+    - **`contextPercentageThreshold`** (number): A value between 0 and 1 that specifies the token threshold for compression as a percentage of the model's total token limit. For example, a value of `0.6` will trigger compression when the chat history exceeds 60% of the token limit.
+  - **Example:**
+    ```json
+    "chatCompression": {
+      "contextPercentageThreshold": 0.6
+    }
+    ```
+
+- **`showLineNumbers`** (boolean):
+  - **Description:** Controls whether line numbers are displayed in code blocks in the CLI output.
+  - **Default:** `true`
+  - **Example:**
+    ```json
+    "showLineNumbers": false
+    ```
 
 ### Example `settings.json`: