删除服务端材质渲染功能及system_config表，转为环境变量配置，初步配置管理员功能

internal/service/user_service.go

@@ -27,7 +27,6 @@ import (
 // userService UserService的实现
 type userService struct {
 	userRepo   repository.UserRepository
-	configRepo repository.SystemConfigRepository
 	jwtService *auth.JWTService
 	redis      *redis.Client
 	cache      *database.CacheManager
@@ -40,7 +39,6 @@ type userService struct {
 // NewUserService 创建UserService实例
 func NewUserService(
 	userRepo repository.UserRepository,
-	configRepo repository.SystemConfigRepository,
 	jwtService *auth.JWTService,
 	redisClient *redis.Client,
 	cacheManager *database.CacheManager,
@@ -51,7 +49,6 @@ func NewUserService(
 	// 这样缓存键的格式为: CacheManager前缀 + CacheKeyBuilder生成的键
 	return &userService{
 		userRepo:   userRepo,
-		configRepo: configRepo,
 		jwtService: jwtService,
 		redis:      redisClient,
 		cache:      cacheManager,
@@ -417,39 +414,29 @@ func (s *userService) UploadAvatar(ctx context.Context, userID int64, fileData [
 }
 
 func (s *userService) GetMaxProfilesPerUser() int {
-	config, err := s.configRepo.GetByKey(context.Background(), "max_profiles_per_user")
-	if err != nil || config == nil {
+	cfg, err := config.GetConfig()
+	if err != nil || cfg.Site.MaxProfilesPerUser <= 0 {
 		return 5
 	}
-	var value int
-	fmt.Sscanf(config.Value, "%d", &value)
-	if value <= 0 {
-		return 5
-	}
-	return value
+	return cfg.Site.MaxProfilesPerUser
 }
 
 func (s *userService) GetMaxTexturesPerUser() int {
-	config, err := s.configRepo.GetByKey(context.Background(), "max_textures_per_user")
-	if err != nil || config == nil {
+	cfg, err := config.GetConfig()
+	if err != nil || cfg.Site.MaxTexturesPerUser <= 0 {
 		return 50
 	}
-	var value int
-	fmt.Sscanf(config.Value, "%d", &value)
-	if value <= 0 {
-		return 50
-	}
-	return value
+	return cfg.Site.MaxTexturesPerUser
 }
 
 // 私有辅助方法
 
 func (s *userService) getDefaultAvatar() string {
-	config, err := s.configRepo.GetByKey(context.Background(), "default_avatar")
-	if err != nil || config == nil || config.Value == "" {
+	cfg, err := config.GetConfig()
+	if err != nil {
 		return ""
 	}
-	return config.Value
+	return cfg.Site.DefaultAvatar
 }
 
 func (s *userService) checkDomainAllowed(host string, allowedDomains []string) error {