feat: Add texture rendering endpoints and service methods

- Introduced new API endpoints for rendering textures, avatars, capes, and previews, enhancing the texture handling capabilities.
- Implemented corresponding service methods in the TextureHandler to process rendering requests and return appropriate responses.
- Updated the TextureRenderService interface to include methods for rendering textures, avatars, and capes, along with their respective parameters.
- Enhanced error handling for invalid texture IDs and added support for different rendering types and formats.
- Updated go.mod to include the webp library for image processing.

internal/service/texture_service_test.go

@@ -494,7 +494,8 @@ func TestTextureServiceImpl_Create(t *testing.T) {
 	_ = userRepo.Create(context.Background(), testUser)
 
 	cacheManager := NewMockCacheManager()
-	textureService := NewTextureService(textureRepo, userRepo, cacheManager, logger)
+	// 在测试中传入nil作为storageClient，因为测试不涉及文件上传
+	textureService := NewTextureService(textureRepo, userRepo, nil, cacheManager, logger)
 
 	tests := []struct {
 		name        string
@@ -531,13 +532,13 @@ func TestTextureServiceImpl_Create(t *testing.T) {
 			wantErr:     true,
 		},
 		{
-			name:        "材质Hash已存在",
+			name:        "材质Hash已存在，应该成功创建并复用URL",
 			uploaderID:  1,
 			textureName: "DuplicateTexture",
 			textureType: "SKIN",
 			hash:        "existing-hash",
-			wantErr:     true,
-			errContains: "已存在",
+			wantErr:     false, // 业务逻辑允许相同Hash存在，只是复用URL
+			errContains: "",
 			setupMocks: func() {
 				_ = textureRepo.Create(context.Background(), &model.Texture{
 					ID:         100,
@@ -617,7 +618,7 @@ func TestTextureServiceImpl_GetByID(t *testing.T) {
 	_ = textureRepo.Create(context.Background(), testTexture)
 
 	cacheManager := NewMockCacheManager()
-	textureService := NewTextureService(textureRepo, userRepo, cacheManager, logger)
+	textureService := NewTextureService(textureRepo, userRepo, nil, cacheManager, logger)
 
 	tests := []struct {
 		name    string
@@ -675,7 +676,7 @@ func TestTextureServiceImpl_GetByUserID_And_Search(t *testing.T) {
 	}
 
 	cacheManager := NewMockCacheManager()
-	textureService := NewTextureService(textureRepo, userRepo, cacheManager, logger)
+	textureService := NewTextureService(textureRepo, userRepo, nil, cacheManager, logger)
 
 	ctx := context.Background()
 
@@ -714,7 +715,7 @@ func TestTextureServiceImpl_Update_And_Delete(t *testing.T) {
 	_ = textureRepo.Create(context.Background(), texture)
 
 	cacheManager := NewMockCacheManager()
-	textureService := NewTextureService(textureRepo, userRepo, cacheManager, logger)
+	textureService := NewTextureService(textureRepo, userRepo, nil, cacheManager, logger)
 
 	ctx := context.Background()
 
@@ -764,7 +765,7 @@ func TestTextureServiceImpl_FavoritesAndLimit(t *testing.T) {
 	}
 
 	cacheManager := NewMockCacheManager()
-	textureService := NewTextureService(textureRepo, userRepo, cacheManager, logger)
+	textureService := NewTextureService(textureRepo, userRepo, nil, cacheManager, logger)
 
 	ctx := context.Background()
 
@@ -807,7 +808,7 @@ func TestTextureServiceImpl_ToggleFavorite(t *testing.T) {
 	_ = textureRepo.Create(context.Background(), testTexture)
 
 	cacheManager := NewMockCacheManager()
-	textureService := NewTextureService(textureRepo, userRepo, cacheManager, logger)
+	textureService := NewTextureService(textureRepo, userRepo, nil, cacheManager, logger)
 
 	ctx := context.Background()