fix: 修复任务生命周期与调度就绪，优化执行和构建开销 (#3069)

* fix: harden task lifecycle and scheduler readiness

* fix: confine log writes to the configured log directory

* fix: verify complete build artifacts and untracked inputs

* fix: reconcile scheduler state and make stop win startup races

* fix: isolate cron generations and serialize scheduler recovery

back/api/cron.ts

@@ -10,12 +10,26 @@ import {
   InstanceStatus,
 } from '../data/runningInstance';
 import { t } from '../shared/i18n';
+import cronClient from '../schedule/client';
 
 const route = Router();
 
 export default (app: Router) => {
   app.use('/crons', route);
 
+  route.use(async (req, res, next) => {
+    // Keep stop/status callbacks available even when the scheduler is down.
+    if (['POST', 'PUT', 'DELETE'].includes(req.method) &&
+      ['/', '/run', '/enable', '/disable', '/views/enable', '/views/disable'].includes(req.path)) {
+      try {
+        await cronClient.readiness.ensureReady();
+      } catch (error) {
+        return next(error);
+      }
+    }
+    return next();
+  });
+
   route.get(
     '/views',
     async (req: Request, res: Response, next: NextFunction) => {

back/api/health.ts

@@ -11,8 +11,8 @@ export default (app: Router) => {
     try {
       const healthService = Container.get(HealthService);
       const health = await healthService.check();
-      res.status(200).send({
-        code: 200,
+      res.status(health.status === 'ok' ? 200 : 503).send({
+        code: health.status === 'ok' ? 200 : 503,
         data: health,
       });
     } catch (err: any) {

back/api/system.ts

@@ -273,8 +273,11 @@ export default (app: Router) => {
             },
             onEnd: async (cp, endTime, diff) => {
               // Close the stream after task completion
-              await logStreamManager.closeStream(await handleLogPath(logPath));
-              res.end();
+              try {
+                await logStreamManager.closeStream(await handleLogPath(logPath));
+              } finally {
+                res.end();
+              }
             },
             onError: async (message: string) => {
               res.write(message);