feat(调度任务): 实现调度任务管理功能

新增调度任务模块，支持任务的增删改查、启停及手动执行
- 后端添加 schedule_job 模型、服务、路由及调度器工具类
- 前端新增调度任务管理页面
- 修改 flow 相关接口将 id 类型从 String 改为 i64
- 添加 tokio-cron-scheduler 依赖实现定时任务调度
- 初始化时加载已启用任务并注册到调度器

backend/src/middlewares/sse.rs

@@ -158,7 +158,7 @@ struct RunReq { #[serde(default)] input: serde_json::Value }
 
 async fn run_sse(
     State(db): State<Db>,
-    Path(id): Path<String>,
+    Path(id): Path<i64>,
     Query(q): Query<HashMap<String, String>>, 
     headers: HeaderMap,
     Json(req): Json<RunReq>,
@@ -192,11 +192,11 @@ async fn run_sse(
 
     // 启动后台任务运行流程，将事件通过 tx 发送
     let db_clone = db.clone();
-    let id_clone = id.clone();
+    let id_clone = id;
     let input = req.input.clone();
     let user_info = Some((claims.uid, claims.sub));
     tokio::spawn(async move {
-        let _ = flow_service::run_with_stream(db_clone, &id_clone, flow_service::RunReq { input }, user_info, tx).await;
+        let _ = flow_service::run_with_stream(db_clone, id_clone, flow_service::RunReq { input }, user_info, tx).await;
     });
 
     // 由通用组件把 Receiver 包装为 SSE 响应

backend/src/middlewares/ws.rs

@@ -42,7 +42,7 @@ use axum::extract::ws::{WebSocketUpgrade, WebSocket, Message, Utf8Bytes};
 
 pub async fn run_ws(
   State(db): State<Db>,
-  Path(id): Path<String>,
+  Path(id): Path<i64>,
   Query(q): Query<HashMap<String, String>>,
   headers: HeaderMap,
   ws: WebSocketUpgrade,
@@ -70,7 +70,7 @@ pub async fn run_ws(
   }
 
   let db_clone = db.clone();
-  let id_clone = id.clone();
+  let id_clone = id;
   let user_info = Some((claims.uid, claims.sub));
 
   Ok(ws.on_upgrade(move |socket| async move {
@@ -78,7 +78,7 @@ pub async fn run_ws(
   }))
 }
 
-pub async fn handle_ws_flow(mut socket: WebSocket, db: Db, id: String, user_info: Option<(i64, String)>) {
+pub async fn handle_ws_flow(mut socket: WebSocket, db: Db, id: i64, user_info: Option<(i64, String)>) {
   use tokio::time::{timeout, Duration};
   use tokio::select;
   use tokio::sync::mpsc;
@@ -106,9 +106,9 @@ pub async fn handle_ws_flow(mut socket: WebSocket, db: Db, id: String, user_info
 
   // 后台运行流程
   let db2 = db.clone();
-  let id2 = id.clone();
+  let id2 = id;
   tokio::spawn(async move {
-    let _ = flow_service::run_with_stream(db2, &id2, flow_service::RunReq { input: input_value }, user_info, tx).await;
+    let _ = flow_service::run_with_stream(db2, id2, flow_service::RunReq { input: input_value }, user_info, tx).await;
   });
 
   // 转发事件到 WebSocket