fix(deploy): remove watchtower label from qdrant service

Qdrant should not be auto-updated — uncontrolled version bumps risk
breaking the vector store or wiping data.

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

Author: 2 people

portainer/stack-r720.yml

@@ -5,8 +5,6 @@ services:
     image: qdrant/qdrant:latest
     container_name: foxmemory-qdrant
     restart: unless-stopped
-    labels:
-      - com.centurylinklabs.watchtower.enable=true
     ports:
       - "6333:6333"
     volumes: