plansync-in

Apply this app's lightweight MVVM + Repository architecture when working on Flutter code in plan_sync. Trigger when: refactoring an existing screen/widget; adding a new feature; or whenever the request mentions Provider, "spaghetti", fat/god widgets, ChangeNotifier doing API calls, business logic in build(), or untangling a controller. Encodes the View / ViewModel / Repository(interface+impl) / Service / Model layering, the Stream-based cache-then-refresh data contract, the Repository-vs-Service decision rule, folder structure, naming, and the incremental migration recipe — tuned to this app's real stack (provider, dio, hive, firebase, GitLab raw-file API). NOT full Clean Architecture: no use-cases, no domain/data model split, no DI framework.