fix: FileBrowser reads stale config on fresh deployments

The gtstef/filebrowser image bakes FILEBROWSER_CONFIG=/home/filebrowser/data/config.yaml,
but controller mounts config at /home/filebrowser/config.yaml. Override the env var in both
generateFileBrowserCompose() and docker-setup.sh so FileBrowser reads the controller-managed
config with proper sources and database path.

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

controller/README.md

@@ -1788,7 +1788,7 @@ See `docker-compose.yml` for the full volume configuration.
 | Node | Hardware | Domain | Status |
 |------|----------|--------|--------|
 | demo-felhom | Acemagic GK3PLUS N100, 16G RAM, 512G SSD + 1TB HDD | demo-felhom.eu | Active |
-| felhotest | Remote VPS, 200G + 100G disk | router.abonet.hu:33022 | Active |
+| felhotest | Proxmox VM (4-16G RAM, 8 vCPU, 200G + 100G SCSI) | router.abonet.hu:33022 | Active |
 | pi-customer-1 | Raspberry Pi 3B+, 1G RAM, 32G SD | pi-customer-1.local | Not yet tested |
 
 ## Related Repositories

controller/internal/web/handlers.go

@@ -1774,6 +1774,7 @@ services:
     restart: unless-stopped
     environment:
       - TZ=Europe/Budapest
+      - FILEBROWSER_CONFIG=/home/filebrowser/config.yaml
     volumes:
       - filebrowser_data:/home/filebrowser/data
       - ./config.yaml:/home/filebrowser/config.yaml:ro%s