Replace the ThemePort/ThemeCode abstraction (GetIt-registered adapter)
with a Riverpod-driven Material 3 ColorScheme, an SfColors ThemeExtension
for brand tokens, and a user-facing appearance selector for light/dark/
system modes. Persisted via SharedPreferences, reacts to system
brightness changes. Payments mode keeps the existing ThemePort API.
Highlights
- New legacy_theme package: LegacyAppTheme (light/dark), LegacyColorSchemes,
SfColors ThemeExtension, LegacyThemePreferences, LegacyThemeNotifier,
LegacyThemeSelector. Timeframe-based variants scaffolded but disabled.
- New /legacy/dashboard/control_panel/settings/appearance route + screen.
- MaterialApp.router picks the legacy theme only when isLegacyMode.
- ~90 ThemeCode.* usages migrated to colorScheme.* / context.sfColors.*.
- 25 widgets dropped the 'ThemePort theme' constructor param.
- ~145 hardcoded colors migrated (exact hex 1:1, grey.shade tiers,
destructive red -> colorScheme.error, background whites -> surface).
Content-over-color whites, transparents, and brand semantic reds/
oranges/greens intentionally preserved.
- sf_localizations updated with appearance / appearanceDescription keys
in all six locales.
These files are regenerated by flutter pub get and contain machine-
specific paths (FLUTTER_ROOT, FLUTTER_APPLICATION_PATH). They should
not be tracked — the file header itself states "do not check into
version control".
- Update .gitignore: prepend **/ to .flutter-plugins-dependencies so
it matches in sub-packages, add Generated.xcconfig and
flutter_export_environment.sh patterns.
- git rm --cached the 4 files that were already tracked (keeps them
on disk for local builds but removes from repo).
Prevent position polling timer from firing with frequency < 60s (protects
against 0s values that saturate the API). Also filter out 0 from location
capability options in the frequency selector.
Add LegacyLoadingIndicator widget using a transparent GIF animation
for all full-page loading states across legacy modules. Also fix
HealthController crash by deferring provider mutation during build.
