Refactor: Create downloaders stack for VPN-routed services

- Created new downloaders stack with Gluetun + qBittorrent unified
- Moved Gluetun from core stack to downloaders stack
- Moved qBittorrent from media-management to downloaders stack
- Uses network_mode: service:gluetun for better maintainability
- Eliminates cross-stack container ID dependencies
- Both services now start/stop together as a logical unit

docker-compose/media-management.yml

@@ -15,23 +15,6 @@
 # - Unmanic: https://unmanic.${DOMAIN}
 
 services:
-  # qBittorrent - Torrent client
-  # Access at: https://qbit.${DOMAIN}
-  # Routes through Gluetun VPN in core stack
-  qbittorrent:
-    image: lscr.io/linuxserver/qbittorrent:latest
-    container_name: qbittorrent
-    restart: unless-stopped
-    network_mode: "container:gluetun"  # Routes through VPN (gluetun container in core stack)
-    volumes:
-      - ./qbittorrent/config:/config
-      - /mnt/downloads:/downloads
-    environment:
-      - PUID=${PUID:-1000}
-      - PGID=${PGID:-1000}
-      - TZ=${TZ:-America/New_York}
-      - WEBUI_PORT=8080
-
   # Sonarr - TV show automation
   # Access at: https://sonarr.yourdomain.duckdns.org
   sonarr: