v0.15.5: Disaster recovery — Hub-based infra backup, auto-mount, restore UI

Complete DR implementation (TASK2.md Phases 1-4):
- Hub infra-backup push/pull endpoints (controller.yaml, disk layout, stacks)
- Fresh-deployment detection pulls config from Hub, auto-mounts drives by UUID
- Full-page restore UI with drive status, app table, sequential restore
- docker-setup.sh shows DR instructions when customer_id is configured

New files: disk_layout.go, restore_scan.go, restore_app_linux.go,
restore_drives_linux.go, infra_backup.go, infra_pull.go,
handler_restore.go, restore.html

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

controller/internal/web/funcmap.go

@@ -305,6 +305,23 @@ func (s *Server) templateFuncMap() template.FuncMap {
 			}
 			return id
 		},
+		// statusText maps DR restore status codes to Hungarian labels.
+		"statusText": func(status string) string {
+			switch status {
+			case "pending":
+				return "Várakozik"
+			case "restoring":
+				return "Visszaállítás..."
+			case "done":
+				return "Kész"
+			case "failed":
+				return "Sikertelen"
+			case "skipped":
+				return "Kihagyva"
+			default:
+				return status
+			}
+		},
 		// pageMatch returns true if currentPage is in the pages slice.
 		// Used to filter page-specific alerts in layout.html.
 		"pageMatch": func(pages []string, currentPage string) bool {