fix(storage): PRAGMA foreign_keys=ON; atomic transaction in complete_subtask_and_check_parent; uncomplete_task moved to storage layer

src-tauri/src/commands/tasks.rs

@@ -15,6 +15,7 @@ use kon_storage::{
     insert_task as db_insert_task,
     list_subtasks as db_list_subtasks,
     list_tasks as db_list_tasks,
+    uncomplete_task as db_uncomplete_task,
     TaskRow,
 };
 
@@ -113,12 +114,9 @@ pub async fn uncomplete_task_cmd(
     state: tauri::State<'_, AppState>,
     id: String,
 ) -> Result<(), String> {
-    sqlx::query("UPDATE tasks SET done = 0, done_at = NULL WHERE id = ?")
-        .bind(&id)
-        .execute(&state.db)
+    db_uncomplete_task(&state.db, &id)
         .await
-        .map_err(|e| format!("Uncomplete task failed: {e}"))
-        .map(|_| ())
+        .map_err(|e| e.to_string())
 }
 
 #[tauri::command]