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/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(