fix: fail on database connection error when database is configured

cmd/server/main.go

@@ -78,14 +78,7 @@ func buildServices(ctx context.Context, cfg *config.Config) (map[metadatav1.Prov
 
 	pool, err := connectDB(ctx, dbURL)
 	if err != nil {
-		log.Printf("database connection failed: %v, running in provider-only mode", err)
-		services[metadatav1.Provider_PROVIDER_MUSICBRAINZ] = service.NewMetadataService(
-			&noopArtistRepo{},
-			&noopAlbumRepo{},
-			&noopTrackRepo{},
-			mb,
-		)
-		return services, func() {}
+		log.Fatalf("database connection failed: %v", err)
 	}
 
 	artistRepo := postgres.NewArtistRepository(pool)