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

test/back/subscription-cleanup.test.cjs

@@ -0,0 +1,53 @@
+const assert = require('node:assert/strict');
+const test = require('node:test');
+const path = require('node:path');
+const dayjs = require('dayjs');
+const load = require('../helpers/load-security-module.cjs');
+
+test('subscription becomes idle and closes its log even when completion logging fails', async () => {
+  const updates = [];
+  let closed = 0;
+  let notified = 0;
+  const Subscription = load(path.resolve('back/services/subscription.ts'), {
+    '../config': {},
+    '../data/subscription': {
+      SubscriptionModel: { update: async (values) => updates.push(values) },
+      SubscriptionStatus: { idle: 1 },
+    },
+    '../data/cron': {},
+    '../config/util': { handleLogPath: async () => '/tmp/unused-log' },
+    '../config/const': { LOG_END_SYMBOL: 'end' },
+    '../config/subscription': {},
+    '../shared/i18n': { t: (s) => s, tf: (s) => s },
+    '../shared/pLimit': {},
+    '../shared/logReader': {},
+    '../shared/logStreamManager': {
+      logStreamManager: {
+        write: async () => {
+          throw new Error('ENOSPC');
+        },
+        closeStream: async () => {
+          closed++;
+          throw new Error('ENOSPC');
+        },
+      },
+    },
+    './schedule': {},
+    './sock': {},
+    './sshKey': {},
+    './cron': {},
+  }).default;
+  const service = new Subscription(
+    {},
+    {},
+    { sendMessage: () => notified++ },
+    {},
+    {},
+  );
+  service.getDb = async () => ({ id: 1, log_path: 'log' });
+  const callbacks = service.taskCallbacks({ id: 1 });
+  await assert.rejects(callbacks.onEnd(undefined, dayjs(), 1), /ENOSPC/);
+  assert.equal(closed, 1);
+  assert.equal(updates.at(-1).status, 1);
+  assert.equal(notified, 1);
+});