I built my education app two years ago with Flutter. It delivers online tests and lets learners browse course content, but the whole project now sits on an outdated Flutter and Dart stack. Several third-party packages have broken with the current stable release, so the app won’t compile. Here’s exactly what I need: • Migrate the codebase to the latest stable Flutter and Dart versions. • Replace or refactor any incompatible packages so every screen—tests, question timers, score display, lesson reader—works exactly as it does today. • Update pubspec.yaml and lock files, clean up deprecated APIs, and verify that the app builds flawlessly for Android (and iOS if nothing else blocks). • Supply a clean Git commit or pull-request showing all changes plus simple build/run instructions. No new features are required; this is a straight upgrade focused on stability and compatibility. If you’ve handled legacy Flutter upgrades before and can turn this around efficiently, I’d love to work with you.