First Production Push

frontend/src/devices/DeviceForm.jsx

@@ -176,11 +176,15 @@ export default function DeviceForm() {
         device_stats: stats,
         events_on: eventsOn,
         device_location_coordinates: locationCoordinates,
-        device_melodies_all: [],
-        device_melodies_favorites: [],
-        user_list: [],
         websocket_url: websocketUrl,
         churchAssistantURL,
+        // device_melodies_all, device_melodies_favorites, user_list are managed
+        // elsewhere and must NOT be sent here to avoid overwriting them on edit
+        ...(!isEdit && {
+          device_melodies_all: [],
+          device_melodies_favorites: [],
+          user_list: [],
+        }),
       };
 
       let deviceId = id;