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)