v0.4.7: Protected stack detail pages + backup page caching

Task 1: Protected stacks with .felhom.yml (slug) are now clickable
on both dashboard and stacks pages. "Részletek" button added to
protected stack actions section. Filebrowser .felhom.yml updated
with resources metadata.

Task 2: Backup page now reads from a cached FullBackupStatus that
refreshes every 5 minutes in background + after each backup run.
Page loads instantly instead of blocking on restic/docker subprocesses.

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

scripts/docker-setup.sh

@@ -1330,6 +1330,11 @@ slug: filebrowser
 description: Fájlkezelő a külső merevlemezhez
 subdomain: files
 category: storage
+resources:
+  mem_request: "128M"
+  mem_limit: "256M"
+  pi_compatible: true
+  needs_hdd: true
 app_info:
   tagline: Web-alapú fájlkezelő a külső merevlemezhez
   use_cases: