feat(iap): settings screen with remove-ads purchase and restore

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

lib/l10n/app_en.arb

@@ -54,5 +54,10 @@
   },
   "newBest": "NEW BEST!",
   "adventure": "Adventure",
-  "classic": "Classic"
+  "classic": "Classic",
+  "removeAds": "Remove ads",
+  "removeAdsDescription": "Removes banners and full-screen ads. Reward ads stay available.",
+  "restorePurchases": "Restore purchases",
+  "adsRemovedThanks": "Ads removed — thank you!",
+  "purchaseUnavailable": "Purchases are unavailable right now."
 }

lib/l10n/app_ko.arb

@@ -26,5 +26,10 @@
   "bestScore": "최고 {score}",
   "newBest": "신기록!",
   "adventure": "어드벤처",
-  "classic": "클래식"
+  "classic": "클래식",
+  "removeAds": "광고 제거",
+  "removeAdsDescription": "배너와 전면 광고를 제거합니다. 보상형 광고는 계속 사용할 수 있습니다.",
+  "restorePurchases": "구매 복원",
+  "adsRemovedThanks": "광고가 제거되었습니다 — 감사합니다!",
+  "purchaseUnavailable": "지금은 구매를 사용할 수 없습니다."
 }

lib/ui/screens/home_screen.dart

@@ -9,6 +9,7 @@ import '../widgets/banner_ad_slot.dart';
 import '../widgets/season_background.dart';
 import 'game_screen.dart';
 import 'season_map_screen.dart';
+import 'settings_screen.dart';
 
 class HomeScreen extends ConsumerWidget {
   const HomeScreen({super.key});
@@ -33,7 +34,9 @@ class HomeScreen extends ConsumerWidget {
         children: [
           const SeasonBackground(theme: SeasonTheme.fallback),
           SafeArea(
-            child: Column(
+            child: Stack(
+              children: [
+                Column(
                   children: [
                     Expanded(
                       child: Center(
@@ -118,6 +121,18 @@ class HomeScreen extends ConsumerWidget {
                     const BannerAdSlot(),
                   ],
                 ),
+                Positioned(
+                  top: 8,
+                  right: 8,
+                  child: IconButton(
+                    icon: const Icon(Icons.settings, color: Colors.white70),
+                    onPressed: () => Navigator.of(context).push(
+                      MaterialPageRoute(builder: (_) => const SettingsScreen()),
+                    ),
+                  ),
+                ),
+              ],
+            ),
           ),
         ],
       ),

lib/ui/screens/settings_screen.dart

@@ -0,0 +1,58 @@
+// lib/ui/screens/settings_screen.dart
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../l10n/gen/app_localizations.dart';
+import '../../state/providers.dart';
+
+class SettingsScreen extends ConsumerWidget {
+  const SettingsScreen({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final l10n = AppLocalizations.of(context)!;
+    final adsRemoved = ref.watch(adsRemovedProvider);
+    final iap = ref.read(iapServiceProvider);
+
+    ref.listen<bool>(adsRemovedProvider, (prev, next) {
+      if (next && !(prev ?? false)) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(content: Text(l10n.adsRemovedThanks)),
+        );
+      }
+    });
+
+    return Scaffold(
+      appBar: AppBar(title: Text(l10n.settings)),
+      body: ListView(
+        padding: const EdgeInsets.all(16),
+        children: [
+          ListTile(
+            title: Text(l10n.removeAds),
+            subtitle: Text(l10n.removeAdsDescription),
+            trailing: adsRemoved
+                ? const Icon(Icons.check_circle, color: Colors.green)
+                : Text(iap.product?.price ?? ''),
+            onTap: adsRemoved
+                ? null
+                : () async {
+                    if (!iap.available || iap.product == null) {
+                      ScaffoldMessenger.of(context).showSnackBar(
+                        SnackBar(content: Text(l10n.purchaseUnavailable)),
+                      );
+                      return;
+                    }
+                    await iap.buyRemoveAds();
+                  },
+          ),
+          const Divider(),
+          ListTile(
+            leading: const Icon(Icons.restore),
+            title: Text(l10n.restorePurchases),
+            onTap: () => iap.restorePurchases(),
+          ),
+        ],
+      ),
+    );
+  }
+}