feat(tasks): persist list_id/effort/notes + update_task_cmd — close Task 2 metadata gap

src-tauri/src/lib.rs

@@ -258,6 +258,7 @@ pub fn run() {
             // Tasks (canonical SQLite-backed task CRUD)
             commands::tasks::create_task_cmd,
             commands::tasks::list_tasks_cmd,
+            commands::tasks::update_task_cmd,
             commands::tasks::complete_task_cmd,
             commands::tasks::delete_task_cmd,
             commands::tasks::uncomplete_task_cmd,