Initial scaffold: FocusFlow ADHD Task Manager Flutter app

BLoC/Cubit state management, ADHD-friendly theme (calming teal, no red),
GetIt DI, GoRouter navigation. Screens: task dashboard, focus mode,
task create/detail, streaks, time perception, settings, onboarding, auth.
Custom widgets: TaskCard, RewardPopup, StreakRing, GentleNudgeCard.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

lib/app.dart

@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+
+import 'core/theme/app_theme.dart';
+import 'features/auth/presentation/bloc/auth_bloc.dart';
+import 'routing/app_router.dart';
+
+/// Root widget for the FocusFlow app.
+///
+/// Provides BLoCs at the top of the tree so they are available to every
+/// route, then delegates to GoRouter for navigation.
+class FocusFlowApp extends StatelessWidget {
+  const FocusFlowApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MultiBlocProvider(
+      providers: [
+        BlocProvider<AuthBloc>(create: (_) => AuthBloc()..add(AuthCheckRequested())),
+      ],
+      child: MaterialApp.router(
+        title: 'FocusFlow',
+        debugShowCheckedModeBanner: false,
+        theme: AppTheme.light,
+        darkTheme: AppTheme.dark,
+        themeMode: ThemeMode.system,
+        routerConfig: AppRouter.router,
+      ),
+    );
+  }
+}