feat(worker): add device registration_id cleanup worker

Add DeviceCleanupWorker to periodically clean up stale device tokens that haven't
been used within the retention period. This prevents accumulation of invalid
registration_ids and maintains data hygiene.

- New DeviceCleanupConfig with enabled, retention_days (3), and interval_minutes (360)
- New repository methods DeleteStaleDevices and DeleteOldestActiveDevice
- Updated RegisterDevice to evict oldest active device when reaching limit
- Reduced MaxDevicesPerUser from 10 to 3 per user
- Worker integrated into app startup/shutdown lifecycle

internal/wire/service.go

@@ -61,6 +61,7 @@ var ServiceSet = wire.NewSet(
 	ProvideQRCodeLoginService,
 	ProvideHotRankWorker,
 	ProvideFileCleanupWorker,
+	ProvideDeviceCleanupWorker,
 	ProvideMaterialService,
 	ProvideCallService,
 	ProvideLiveKitService,
@@ -312,6 +313,19 @@ func ProvideFileCleanupWorker(
 	return service.NewFileCleanupWorker(cfg, uploadedRepo, s3Client, rdb)
 }
 
+// ProvideDeviceCleanupWorker 提供设备 registration_id 清理 worker
+func ProvideDeviceCleanupWorker(
+	cfg *config.Config,
+	deviceRepo repository.DeviceTokenRepository,
+	redisClient *redis.Client,
+) *service.DeviceCleanupWorker {
+	var rdb *redisPkg.Client
+	if redisClient != nil {
+		rdb = redisClient.GetClient()
+	}
+	return service.NewDeviceCleanupWorker(cfg, deviceRepo, rdb)
+}
+
 // ProvideUserActivityService 提供用户活跃统计服务
 func ProvideUserActivityService(repo repository.UserActivityRepository) service.UserActivityService {
 	return service.NewUserActivityService(repo)