fix(frontend): extend kiosk mode to Docker and Hosts pages

Kiosk mode (?kiosk=1) now hides the filter panel on all main views:
- Proxmox dashboard (already supported)
- Docker hosts page (added)
- Hosts overview page (added)

This ensures a clean display when using token auth for dashboard/kiosk
displays without the search and filter controls visible.

Follow-up fix for #1055

.github/workflows/deploy-demo-server.yml

@@ -1,9 +1,9 @@
 name: Deploy Demo Server
 
 on:
-  push:
-    branches: [main]
   workflow_dispatch:
+  schedule:
+    - cron: '0 0 * * *' # Nightly at midnight
 
 jobs:
   deploy: