refactor: 移除全局单例、修复分层违规、统一错误与响应

internal/service/yggdrasil_service_composite.go

@@ -10,8 +10,6 @@ import (
 	"fmt"
 
 	"go.uber.org/zap"
-
-	"gorm.io/gorm"
 )
 
 // yggdrasilServiceComposite 组合服务，保持接口兼容性
@@ -28,20 +26,20 @@ type yggdrasilServiceComposite struct {
 
 // NewYggdrasilServiceComposite 创建组合服务实例
 func NewYggdrasilServiceComposite(
-	db *gorm.DB,
 	userRepo repository.UserRepository,
 	profileRepo repository.ProfileRepository,
 	yggdrasilRepo repository.YggdrasilRepository,
+	textureRepo repository.TextureRepository,
 	signatureService *SignatureService,
 	redisClient *redis.Client,
 	logger *zap.Logger,
 	tokenService TokenService, // 新增：TokenService接口
 ) YggdrasilService {
 	// 创建各个专门的服务
-	authService := NewYggdrasilAuthService(db, userRepo, yggdrasilRepo, logger)
+	authService := NewYggdrasilAuthService(userRepo, yggdrasilRepo, logger)
 	sessionService := NewSessionService(redisClient, logger)
 	serializationService := NewSerializationService(
-		repository.NewTextureRepository(db),
+		textureRepo,
 		signatureService,
 		logger,
 	)