fix: honor automatic updates preference and add Settings controls

src/core/settings.ts

@@ -231,7 +231,7 @@ export const ROLE_SLOT: Readonly<Record<ModelRole, ModelSlotName>> = {
 /** General settings — app-level behavior. Version DISPLAY and plans login
  *  live outside the record (package.json / auth.json) by owner decision. */
 export interface GeneralSettings {
-	/** Auto-update the app (default ON). Mechanism ships in a later wave. */
+	/** Automatic startup/24h update checks (default ON). Manual checks bypass this. */
 	autoUpdate?: boolean;
 }