Build a robust Flutter WebSocket real-time chat app: minimal server, resilient client with reconnection and heartbeats, security, scaling, and deployment.
When to use SharedPreferences vs secure storage in Flutter—threats, code examples, migration steps, and best practices for tokens and PII.
A practical guide to Flutter’s Cupertino iOS-style widgets: app shells, navigation, lists, forms, pickers, theming, and adaptive patterns with code.
A step-by-step Flutter sqflite migration guide: design, implement, and test safe schema upgrades with code patterns, tips, and pitfalls to avoid.
Step-by-step guide to set up FCM push notifications in Flutter for Android and iOS, with code, permissions, background handling, and testing tips.
A practical guide to stable Flutter golden tests: setup, fonts, sizes, CI updates, and strategies to avoid flaky widget snapshots.
