feat(analytics): booster + daily-reward events

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

lib/services/analytics_service.dart

@@ -61,4 +61,16 @@ class AnalyticsService {
   void tutorialFinished({required bool skipped}) {
     _backend.logEvent('tutorial_finished', {'skipped': skipped ? 1 : 0});
   }
+
+  void boosterUsed({required String type}) =>
+      _backend.logEvent('booster_used', {'type': type});
+
+  void boosterGranted(
+          {required String type, required int count, required String source}) =>
+      _backend.logEvent(
+          'booster_granted', {'type': type, 'count': count, 'source': source});
+
+  void dailyRewardClaimed({required int day, required bool doubled}) =>
+      _backend.logEvent(
+          'daily_reward_claimed', {'day': day, 'doubled': doubled ? 1 : 0});
 }

lib/state/daily_reward_notifier.dart

@@ -30,6 +30,14 @@ class DailyRewardNotifier extends Notifier<DailyResolution> {
       await inv.grant(entry.key, entry.value * (doubled ? 2 : 1));
     }
     await _save.recordDailyClaim(_cal.ymd(_now()), r.day);
+    ref.read(analyticsProvider).dailyRewardClaimed(day: r.day, doubled: doubled);
+    for (final e in reward.entries) {
+      ref.read(analyticsProvider).boosterGranted(
+            type: e.key.name,
+            count: e.value * (doubled ? 2 : 1),
+            source: 'daily',
+          );
+    }
     state = _resolve();
   }
 }

lib/state/game_session_notifier.dart

@@ -151,6 +151,7 @@ class GameSessionNotifier extends Notifier<GameViewState?> {
     }
     if (!apply()) return BoosterUseResult.invalidTarget;
     await inv.consume(type);
+    ref.read(analyticsProvider).boosterUsed(type: type.name);
     _publish(lastPlacement: null);
     return BoosterUseResult.success;
   }

test/services/analytics_service_test.dart

@@ -47,4 +47,23 @@ void main() {
     });
     expect(backend.events[3].$2, {'score': 500, 'new_best': 1});
   });
+
+  test('booster + daily events carry their fields', () {
+    final backend = _RecordingBackend();
+    final a = AnalyticsService(backend);
+
+    a.boosterUsed(type: 'hammer');
+    a.boosterGranted(type: 'hammer', count: 2, source: 'daily');
+    a.dailyRewardClaimed(day: 7, doubled: true);
+
+    expect(backend.events.map((e) => e.$1).toList(), [
+      'booster_used',
+      'booster_granted',
+      'daily_reward_claimed',
+    ]);
+    expect(backend.events[0].$2, {'type': 'hammer'});
+    expect(backend.events[1].$2,
+        {'type': 'hammer', 'count': 2, 'source': 'daily'});
+    expect(backend.events[2].$2, {'day': 7, 'doubled': 1});
+  });
 }