fluffychat/.github/copilot-instructions.md

Check the relevant .github/instructions/ doc before and after coding. If it doesn't exist, create it with the user first. Follow instructions-authoring.instructions.md for doc standards.

client - Flutter/Dart Language Learning Chat App

Tech Stack

• Framework: Flutter (SDK ≥3.0), Dart
• Base: Fork of FluffyChat (package name fluffychat)
• Protocol: Matrix Client-Server API via matrix Dart SDK
• Subscriptions: RevenueCat
• Backend: 2-step-choreographer (FastAPI) via PApiUrls
• Error Tracking: Sentry
• Routing: GoRouter

Quick Reference

Project Structure

• lib/pages/, lib/widgets/, lib/utils/, lib/config/ — FluffyChat base code
• lib/pangea/ — All Pangea language-learning code (~30 feature modules)
• pangea_packages/ — Shared isolate packages
• Pangea modifications in FluffyChat files marked with // #Pangea ... // Pangea#

Key Files

• Entry point: lib/main.dart
• Root state: lib/widgets/matrix.dart (MatrixState)
• Pangea controller: lib/pangea/common/controllers/pangea_controller.dart
• Routes: lib/config/routes.dart
• API URLs: lib/pangea/common/network/urls.dart
• HTTP client: lib/pangea/common/network/requests.dart
• Environment: lib/pangea/common/config/environment.dart (reads .env / config.sample.json)
• Event types: lib/pangea/events/constants/pangea_event_types.dart
• Choreographer: lib/pangea/choreographer/choreographer.dart

Conventions

• Package imports use package:fluffychat/...
• Feature modules follow pattern: models/, repo/ (API calls), widgets/, utils/, constants/
• API repo files pair with request/response models (e.g., igc_repo.dart + igc_request_model.dart + igc_response_model.dart)
• Controllers extend ChangeNotifier or use BaseController<T> (stream-based)