- Flutter 3.35.7 / Dart 3.4 toolchain with API migrations
- Android: AGP 8.12.3 with Kotlin/Gradle tuning
- iOS/macOS: project sync to new toolchain
- Dependency updates (share_plus, app_settings, fl_chart, package_info_plus, flutter_timezone, copy_with_extension, source_gen, flutter_lints, intl)
- Code formatting and maintenance cleanup
