Auto-refresh the active tab's panels (silent, non-disturbing)

Local panels are fs.watched (LocalDirWatcher + setWatchedDirs -> pathRefresh);
remote panels poll every 3s. New refresh({silent}) skips the loading/busy
flags and touches no DOM, snapshotting sessionId+cwd to discard results if the
user navigated mid-flight. Only the active tab is live; switching tabs
refreshes the new pair. A future on/off setting is left as commented
breadcrumbs. Docs updated.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/shared/types.ts

@@ -95,6 +95,10 @@ export interface AppSettings {
 	editor: "builtin" | "custom";
 	/** Full path to the external editor .app; empty = OS default application. */
 	editorApp: string;
+	// Auto-refresh the active tab's panels (local watched, remote polled). Always
+	// on for now; uncomment (+ the settings.service and tab-bar breadcrumbs, and
+	// gate the poll/watch in panels.service) to expose a toggle later.
+	// autoRefresh: boolean;
 }
 
 export const DEFAULT_SETTINGS: AppSettings = {
@@ -110,6 +114,7 @@ export const DEFAULT_SETTINGS: AppSettings = {
 	autoClearCompleted: true,
 	editor: "builtin",
 	editorApp: "",
+	// autoRefresh: true,
 };
 
 export function effectiveConcurrency(settings: AppSettings): number {