Claude Code: Add WORKER_MODE environment variable support

- Add .env file with critical worker variables (HF_TOKEN, WORKER_MODE, LOG_LEVEL)
- Update app.py run_worker() to respect WORKER_MODE (enabled/auto/disabled)
- Update entrypoint.sh to check WORKER_MODE before starting worker
- Worker heartbeat now includes _worker_mode in status

This allows disabling the worker via environment variable if needed.

app.py

@@ -553,8 +553,18 @@ def run_worker():
     """
     Cain's worker process - runs in background to keep agent alive and process tasks.
     This keeps Cain's state as 'active' rather than 'idle' when processing work.
+
+    Worker behavior controlled by WORKER_MODE environment variable:
+    - enabled/auto: Worker runs normally
+    - disabled: Worker exits immediately
     """
-    logger.info("[Cain Worker] Starting worker process...")
+    # Check WORKER_MODE before starting worker
+    worker_mode = os.environ.get("WORKER_MODE", "auto").lower()
+    if worker_mode == "disabled":
+        logger.info("[Cain Worker] Worker disabled by WORKER_MODE=disabled - exiting")
+        return
+
+    logger.info(f"[Cain Worker] Starting worker process (mode: {worker_mode})...")
     data_dir = Path(os.environ.get("OPENCLAW_DATA_DIR", "/data"))
     status_file = data_dir / "cain_status.json"
 
@@ -576,6 +586,7 @@ def run_worker():
                     data = json.load(f)
                 data["worker_heartbeat"] = datetime.utcnow().isoformat() + "+00:00"
                 data["_worker_pid"] = os.getpid()
+                data["_worker_mode"] = worker_mode
                 with open(status_file, "w") as f:
                     json.dump(data, f, indent=2)
 

entrypoint.sh

@@ -109,13 +109,21 @@ echo "=========================================="
 echo "Starting Cain worker..."
 echo "=========================================="
 
-# Start Cain's worker process in background
-# This keeps the agent alive and processes background tasks
-echo "✓ Starting Cain worker process..."
-python3 app.py --worker > /app/logs/worker.log 2>&1 &
-WORKER_PID=$!
-echo "  Worker PID: $WORKER_PID"
-echo $WORKER_PID > /tmp/worker.pid
+# Check WORKER_MODE before starting worker
+# Default: auto (start worker)
+WORKER_MODE=${WORKER_MODE:-auto}
+if [ "$WORKER_MODE" = "disabled" ]; then
+    echo "  Worker disabled by WORKER_MODE=disabled - skipping worker startup"
+    WORKER_PID=""
+else
+    # Start Cain's worker process in background
+    # This keeps the agent alive and processes background tasks
+    echo "✓ Starting Cain worker process (mode: $WORKER_MODE)..."
+    python3 app.py --worker > /app/logs/worker.log 2>&1 &
+    WORKER_PID=$!
+    echo "  Worker PID: $WORKER_PID"
+    echo $WORKER_PID > /tmp/worker.pid
+fi
 
 echo ""
 echo "=========================================="
@@ -146,7 +154,11 @@ echo "A2A Proxy: http://0.0.0.0:7861"
 echo ""
 echo "PIDs:"
 echo "  - Uvicorn: $UVICORN_PID"
-echo "  - Worker: $WORKER_PID"
+if [ -n "$WORKER_PID" ]; then
+    echo "  - Worker: $WORKER_PID"
+else
+    echo "  - Worker: disabled"
+fi
 echo "  - A2A Proxy: $A2A_PID"
 echo ""