Add daily streak system and normalize bundle id to com.airkjw.blockseasons

Pure advanceStreak (1-day grace none, milestone flags at 3/7/14/30),
persisted in the save blob; StreakNotifier advances on every finished
attempt; home screen flame chip and milestone snackbar. Fix flutter
create's camelCased iOS bundle id and underscored Android application
id to the agreed lowercase form before any store registration.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

lib/ui/screens/game_screen.dart

@@ -113,12 +113,24 @@ class _GameScreenState extends ConsumerState<GameScreen> {
             .recordWin(stars: next.starsEarned, score: next.score);
       }
       if (next.phase == GamePhase.lost) audio.play(Sfx.lose);
+      if (next.phase == GamePhase.won || next.phase == GamePhase.lost) {
+        ref.read(streakProvider.notifier).onStagePlayed(DateTime.now());
+      }
     }
   }
 
   @override
   Widget build(BuildContext context) {
     ref.listen<GameViewState?>(gameSessionProvider, _onSessionChange);
+    ref.listen(streakProvider, (prev, next) {
+      final milestone = next.hitMilestone;
+      if (milestone != null && prev?.hitMilestone != milestone) {
+        final l10n = AppLocalizations.of(context)!;
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(l10n.streakMilestone(milestone))),
+        );
+      }
+    });
     final view = ref.watch(gameSessionProvider);
     if (view == null) {
       return const Scaffold(body: Center(child: CircularProgressIndicator()));

lib/ui/screens/home_screen.dart

@@ -1,14 +1,17 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
 
 import '../../l10n/gen/app_localizations.dart';
+import '../../state/providers.dart';
 import 'season_map_screen.dart';
 
-class HomeScreen extends StatelessWidget {
+class HomeScreen extends ConsumerWidget {
   const HomeScreen({super.key});
 
   @override
-  Widget build(BuildContext context) {
+  Widget build(BuildContext context, WidgetRef ref) {
     final l10n = AppLocalizations.of(context)!;
+    final streak = ref.watch(streakProvider);
     return Scaffold(
       body: SafeArea(
         child: Center(
@@ -21,6 +24,20 @@ class HomeScreen extends StatelessWidget {
                       fontWeight: FontWeight.bold,
                     ),
               ),
+              if (streak.current > 0) ...[
+                const SizedBox(height: 12),
+                Chip(
+                  avatar: const Icon(
+                    Icons.local_fire_department,
+                    color: Colors.deepOrange,
+                    size: 20,
+                  ),
+                  label: Text(
+                    '${streak.current}',
+                    style: Theme.of(context).textTheme.titleMedium,
+                  ),
+                ),
+              ],
               const SizedBox(height: 48),
               FilledButton(
                 style: FilledButton.styleFrom(