feat: Implement video workflow repository and related services

- Added videoWorkflowRepository with methods to manage video and user interactions.
- Introduced catalog_mapper for converting database models to protobuf representations.
- Created domain_helpers for normalizing domain and ad format values.
- Defined service interfaces for payment, account, notification, domain, ad template, player config, video, and user management.
- Implemented OAuth helpers for generating state and caching keys.
- Developed payment_proto_helpers for mapping payment-related models to protobuf.
- Added service policy helpers to enforce plan requirements and user permissions.
- Created user_mapper for converting user payloads to protobuf format.
- Implemented value_helpers for handling various value conversions and nil checks.
- Developed video_helpers for normalizing video statuses and managing storage types.
- Created video_mapper for mapping video models to protobuf format.
- Implemented render workflow for managing video creation and job processing.

internal/service/service_health.go

@@ -82,10 +82,6 @@ func (s *HealthService) checkDatabase(ctx context.Context) ComponentHealth {
 	if err := sqlDB.PingContext(ctx); err != nil {
 		return ComponentHealth{Status: HealthStatusUnhealthy, Message: fmt.Sprintf("database ping failed: %v", err), Latency: time.Since(start).String(), CheckedAt: time.Now()}
 	}
-	var result int
-	if err := s.db.WithContext(ctx).Raw("SELECT 1").Scan(&result).Error; err != nil {
-		return ComponentHealth{Status: HealthStatusUnhealthy, Message: fmt.Sprintf("database query failed: %v", err), Latency: time.Since(start).String(), CheckedAt: time.Now()}
-	}
 	return ComponentHealth{Status: HealthStatusHealthy, Latency: time.Since(start).String(), CheckedAt: time.Now()}
 }