Route GPU queue to CPU workers when no GPU node available

Add -Q celery,gpu to l1-worker so it picks up GPU-queued tasks
while no GPU node is in the swarm.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -106,7 +106,7 @@ services:
 
   l1-worker:
     image: registry.rose-ash.com:5000/celery-l1-server:latest
-    command: sh -c "find /app -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null; celery -A celery_app worker --loglevel=info -E"
+    command: sh -c "find /app -type d -name __pycache__ -exec rm -rf {} + 2>/dev/null; celery -A celery_app worker --loglevel=info -E -Q celery,gpu"
     env_file:
       - .env
     environment: