improved performance and battery usage on older devices

lib/utils/json_equality.dart

@@ -0,0 +1,7 @@
+import 'dart:convert';
+
+/// Content equality for API models that define no `==` but serialise to JSON.
+/// Comparing the encoded strings is cheaper than a deep map walk and treats
+/// both sides identically (same `toJson`, same field order).
+bool sameJson(Object? a, Object? b) =>
+    a != null && b != null && jsonEncode(a) == jsonEncode(b);