docs: document EditorOptions paddingX and editorPaddingX setting

packages/coding-agent/README.md

@@ -804,6 +804,7 @@ Global `~/.pi/agent/settings.json` stores persistent preferences:
 | `images.autoResize` | Auto-resize images to 2000x2000 max for better model compatibility | `true` |
 | `images.blockImages` | Prevent images from being sent to LLM providers | `false` |
 | `doubleEscapeAction` | Action for double-escape with empty editor: `tree` or `branch` | `tree` |
+| `editorPaddingX` | Horizontal padding for input editor (0-3) | `0` |
 | `extensions` | Additional extension file paths | `[]` |
 
 ---

packages/tui/README.md

@@ -220,12 +220,18 @@ interface EditorTheme {
   selectList: SelectListTheme;
 }
 
-const editor = new Editor(tui, theme);  // tui is required for height-aware scrolling
+interface EditorOptions {
+  paddingX?: number;  // Horizontal padding (default: 0)
+}
+
+const editor = new Editor(tui, theme, options?);  // tui is required for height-aware scrolling
 editor.onSubmit = (text) => console.log(text);
 editor.onChange = (text) => console.log("Changed:", text);
 editor.disableSubmit = true; // Disable submit temporarily
 editor.setAutocompleteProvider(provider);
 editor.borderColor = (s) => chalk.blue(s); // Change border dynamically
+editor.setPaddingX(1); // Update horizontal padding dynamically
+editor.getPaddingX();  // Get current padding
 ```
 
 **Features:**