Structures Flutter apps using layered architecture (UI / Logic / Data) with feature-first file organization. Use when creating new features, designing the project structure, adding repositories/services/view models (or cubits/providers/notifiers), or wiring dependency injection. State management agnostic.

Implements Flutter state management using the bloc library (Bloc and Cubit). Use when creating new features, screens, or state management logic with bloc/cubit, modeling state, wiring Flutter widgets to blocs, or writing bloc/cubit unit tests.

Applies Dart 3 language features in Flutter/Dart code. Use when writing if-else or switch statements, creating new classes, or deciding between a data class and a record.

Applies Effective Dart guidelines in Flutter/Dart code. Use when writing or reviewing Dart code for naming conventions, types, style, imports, file structure, usage patterns, documentation, testing, widgets, state management, or performance.

Integrates Firebase Analytics into Flutter apps. Use when setting up analytics, logging events, setting user properties, or configuring event parameters.

Integrates Firebase App Check into Flutter apps. Use when setting up App Check, selecting providers per platform, using debug providers during development, enabling enforcement, or applying App Check security best practices.

Integrates Firebase Authentication into Flutter apps. Use when setting up auth, managing auth state, implementing email/password or social sign-in, handling auth errors, managing users, or applying security best practices.

Integrates Cloud Firestore into Flutter apps. Use when setting up Firestore, designing document/collection structure, reading and writing data, working with real-time listeners, designing for scale, or applying security rules.

Calls Firebase Cloud Functions from Flutter apps. Use when setting up callable functions, passing data to functions, handling errors from function calls, optimizing performance, or testing with the Firebase Emulator Suite.

Integrates Firebase Data Connect into Flutter apps. Use when setting up Data Connect, designing queries, handling errors, or applying security and performance best practices.

Integrates Firebase Realtime Database into Flutter apps. Use when setting up Realtime Database, structuring JSON data, querying, performing read/write operations, implementing offline capabilities, or applying security rules.

Integrates Firebase In-App Messaging into Flutter apps. Use when setting up in-app messaging, triggering or suppressing messages, managing user privacy and opt-in data collection, or testing campaigns.

Integrates Firebase Cloud Messaging (FCM) into Flutter apps. Use when setting up push notifications, handling foreground/background messages, managing permissions, working with FCM tokens, or configuring platform-specific notification behavior.

Integrates Firebase Remote Config into Flutter apps. Use when setting up Remote Config, managing parameter defaults, fetching and activating values, implementing real-time updates, or handling throttling and testing.

Integrates Firebase Cloud Storage into Flutter apps. Use when setting up Storage, uploading or downloading files, managing metadata, handling errors, or applying security rules.

Provides best practices for Flutter app architecture, including layered architecture, data flow, state management patterns, and extensibility guidelines.

Implements state management with ChangeNotifier and Provider in Flutter. Use when setting up ChangeNotifier models, providing them to the widget tree, consuming state with Consumer or Provider.of, or optimizing rebuilds.

Diagnoses and fixes common Flutter errors. Use when encountering layout errors (RenderFlex overflow, unbounded constraints, RenderBox not laid out), scroll errors, or setState-during-build errors.

Sets up Firebase for Flutter apps using FlutterFire CLI. Use when initializing a Firebase project, running flutterfire configure, initializing Firebase in main.dart, or configuring multiple app flavors.

Uses the Mockito package for mocking in Flutter/Dart tests. Use when generating mocks, stubbing methods, verifying interactions, capturing arguments, or deciding between mocks, fakes, and real objects.