v0.11.9 UI Polish Fixes for backup section

- Fix 1: margin-bottom 1rem→1.5rem on .deploy-cross-drive
- Fix 2: info tooltip on "Módszer"; rename restic to "Titkosított mentés"
- Fix 3: replace disabled checkbox with green/gray dot status indicator
- Fix 4: progressive disclosure — dest/method/schedule selects disabled
  until "Engedélyezve" checked; backend preserves config when disabling
- Fix 5: remove all emoji from deploy.html and backups.html backup sections

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

controller/internal/web/handlers.go

@@ -519,23 +519,31 @@ func (s *Server) settingsCrossBackupHandler(w http.ResponseWriter, r *http.Reque
 	_ = r.ParseForm()
 
 	enabled := r.FormValue("cross_drive_enabled") == "on"
-	method := r.FormValue("cross_drive_method")
-	destPath := r.FormValue("cross_drive_dest")
-	schedule := r.FormValue("cross_drive_schedule")
 
-	// Validate method and schedule
-	if method != "rsync" && method != "restic" {
-		method = "rsync"
-	}
-	if schedule != "daily" && schedule != "weekly" && schedule != "manual" {
-		schedule = "daily"
-	}
-
-	// Preserve existing runtime status fields
+	// Preserve existing runtime status fields and config when disabling
 	existing := s.settings.GetCrossDriveConfig(name)
 
+	var method, destPath, schedule string
+	if enabled {
+		method = r.FormValue("cross_drive_method")
+		destPath = r.FormValue("cross_drive_dest")
+		schedule = r.FormValue("cross_drive_schedule")
+		// Validate method and schedule
+		if method != "rsync" && method != "restic" {
+			method = "rsync"
+		}
+		if schedule != "daily" && schedule != "weekly" && schedule != "manual" {
+			schedule = "daily"
+		}
+	} else if existing != nil {
+		// Preserve existing settings when disabling
+		method = existing.Method
+		destPath = existing.DestinationPath
+		schedule = existing.Schedule
+	}
+
 	var cfg *settings.CrossDriveBackup
-	if destPath != "" {
+	if destPath != "" || existing != nil {
 		cfg = &settings.CrossDriveBackup{
 			Enabled:         enabled,
 			Method:          method,