feat(hooks): add tools.ts example hook for interactive tool enable/disable

- /tools command opens SettingsList-based selector for all loaded tools
- Space/Enter toggles individual tools between enabled/disabled
- Changes apply immediately on toggle (like /settings)
- Tool selection persisted to session via appendEntry()
- State restored from current branch on session_start, session_tree, session_branch
- Uses getBranch() to respect branch-specific tool configuration
- Export getSettingsListTheme and getSelectListTheme for hooks to use

packages/coding-agent/src/index.ts

@@ -161,4 +161,10 @@ export { main } from "./main.js";
 // UI components for hooks
 export { BorderedLoader } from "./modes/interactive/components/bordered-loader.js";
 // Theme utilities for custom tools and hooks
-export { getMarkdownTheme, Theme, type ThemeColor } from "./modes/interactive/theme/theme.js";
+export {
+	getMarkdownTheme,
+	getSelectListTheme,
+	getSettingsListTheme,
+	Theme,
+	type ThemeColor,
+} from "./modes/interactive/theme/theme.js";