Introduce initial screen reader mode handling and flag (#6653)

docs/cli/configuration.md

@@ -308,6 +308,20 @@ In addition to a project settings file, a project's `.gemini` directory can cont
     "showLineNumbers": false
     ```
 
+- **`accessibility`** (object):
+  - **Description:** Configures accessibility features for the CLI.
+  - **Properties:**
+    - **`screenReader`** (boolean): Enables screen reader mode, which adjusts the TUI for better compatibility with screen readers. This can also be enabled with the `--screen-reader` command-line flag, which will take precedence over the setting.
+    - **`disableLoadingPhrases`** (boolean): Disables the display of loading phrases during operations.
+  - **Default:** `{"screenReader": false, "disableLoadingPhrases": false}`
+  - **Example:**
+    ```json
+    "accessibility": {
+      "screenReader": true,
+      "disableLoadingPhrases": true
+    }
+    ```
+
 ### Example `settings.json`:
 
 ```json
@@ -475,6 +489,8 @@ Arguments passed directly when running the CLI can override other configurations
   - Can be specified multiple times or as comma-separated values.
   - 5 directories can be added at maximum.
   - Example: `--include-directories /path/to/project1,/path/to/project2` or `--include-directories /path/to/project1 --include-directories /path/to/project2`
+- **`--screen-reader`**:
+  - Enables screen reader mode for accessibility.
 - **`--version`**:
   - Displays the version of the CLI.