Reorganize docker-compose stacks for better service grouping

Stack changes:
- Renamed media-extended.yml → media-management.yml (better clarity)
- Moved Plex from media → alternatives (Jellyfin is primary)
- Moved code-server from utilities → infrastructure
- Moved Sonarr, Radarr, Prowlarr from media → media-management
- Moved Calibre-web from media-management → media

New stack organization:
- media.yml (3): Jellyfin, Calibre-web, qBittorrent
- media-management.yml (13): All *arr apps, transcoders
- alternatives.yml (6): Plex, Portainer, Authentik
- infrastructure.yml (7): Added code-server
- utilities.yml (6): Removed code-server

Documentation updated:
- README.md: Updated stack descriptions
- services-overview.md: Updated service counts and locations
- All service docs: Updated file paths media-extended → media-management

README.md

@@ -121,13 +121,13 @@ The infrastructure uses Traefik for reverse proxy with automatic SSL, Authelia f
 5. **Deploy additional stacks through Dockge:**
    
    Log in to Dockge at `https://dockge.yourdomain.duckdns.org` - all stacks are already loaded and ready to deploy:
-   - **media** - Plex, Jellyfin, Sonarr, Radarr, Prowlarr, qBittorrent
-   - **media-extended** - Readarr, Lidarr, Mylar, Calibre
+   - **media** - Jellyfin, Calibre-web, qBittorrent
+   - **media-management** - Sonarr, Radarr, Prowlarr, Readarr, Lidarr, Mylar, Bazarr
    - **homeassistant** - Home Assistant, Node-RED, Zigbee2MQTT, ESPHome
    - **productivity** - Nextcloud, Gitea, Bookstack, Outline, Excalidraw
    - **monitoring** - Grafana, Prometheus, Uptime Kuma, Netdata
-   - **utilities** - Duplicati, Code Server, FreshRSS, Wallabag
-   - **alternatives** - Portainer, Authentik (alternative to Dockge/Authelia)
+   - **utilities** - Duplicati, FreshRSS, Wallabag
+   - **alternatives** - Plex, Portainer, Authentik
    
    Simply click any stack in Dockge and press "Start" to deploy it.