Fix worker control fallback for running detect workers

domain-api/app/services/worker_control_service.py

@@ -5,6 +5,7 @@ import os
 import subprocess
 from datetime import datetime
 from pathlib import Path
+from uuid import uuid4
 
 from app.core.config import settings
 from app.core.redis_client import get_redis
@@ -288,6 +289,7 @@ def send_worker_command(action: str, payload: dict | None = None) -> tuple[bool,
         command_payload = {"action": action}
         if payload:
             command_payload.update(payload)
+        command_payload["request_id"] = str(command_payload.get("request_id") or f"workerctl-{uuid4().hex[:12]}")
         serialized = json.dumps(command_payload, ensure_ascii=False)
         redis_client.set(WORKER_PENDING_COMMAND_KEY, serialized, ex=120)
         redis_client.publish(WORKER_CONTROL_CHANNEL, serialized)

domain-api/tests/test_worker_control_service.py

@@ -0,0 +1,38 @@
+import json
+import unittest
+from unittest.mock import Mock, patch
+
+from app.services.worker_control_service import WORKER_CONTROL_CHANNEL, WORKER_PENDING_COMMAND_KEY, send_worker_command
+
+
+class WorkerControlServiceTests(unittest.TestCase):
+    @patch("app.services.worker_control_service.get_redis")
+    def test_send_worker_command_persists_request_id_and_publishes_same_payload(self, mock_get_redis) -> None:
+        redis_client = Mock()
+        mock_get_redis.return_value = redis_client
+
+        ok, message = send_worker_command(
+            "start_detection",
+            payload={"job_id": 1, "job_code": "detect-20260419030000-abc123"},
+        )
+
+        self.assertTrue(ok)
+        self.assertIn("已发送 Worker 控制指令", message)
+
+        redis_client.set.assert_called_once()
+        set_args = redis_client.set.call_args.args
+        self.assertEqual(WORKER_PENDING_COMMAND_KEY, set_args[0])
+        serialized = set_args[1]
+        self.assertEqual(120, redis_client.set.call_args.kwargs["ex"])
+
+        payload = json.loads(serialized)
+        self.assertEqual("start_detection", payload["action"])
+        self.assertEqual(1, payload["job_id"])
+        self.assertEqual("detect-20260419030000-abc123", payload["job_code"])
+        self.assertTrue(payload["request_id"].startswith("workerctl-"))
+
+        redis_client.publish.assert_called_once_with(WORKER_CONTROL_CHANNEL, serialized)
+
+
+if __name__ == "__main__":
+    unittest.main()