feat(upload): integrate upload service for chat image validation and S3 uploads

- Added UploadService to handle image uploads and validation for chat messages.
- Updated ChatService and MessageService to utilize UploadService for validating image segments in messages.
- Enhanced wire generation to inject UploadService into relevant services.
- Introduced UploadImageBytes method in UploadService for uploading images directly from memory.
- Added TrustedPublicURLPrefix method in S3 Client for generating public URLs for uploaded images.

internal/service/message_service.go

@@ -35,10 +35,12 @@ type MessageService struct {
 
 	// 基础缓存（用于简单缓存操作）
 	baseCache cache.Cache
+
+	uploadService *UploadService
 }
 
 // NewMessageService 创建消息服务
-func NewMessageService(db *gorm.DB, messageRepo *repository.MessageRepository, cacheBackend cache.Cache) *MessageService {
+func NewMessageService(db *gorm.DB, messageRepo *repository.MessageRepository, cacheBackend cache.Cache, uploadService *UploadService) *MessageService {
 	// 创建适配器
 	convRepoAdapter := cache.NewConversationRepositoryAdapter(messageRepo)
 	msgRepoAdapter := cache.NewMessageRepositoryAdapter(messageRepo)
@@ -56,6 +58,7 @@ func NewMessageService(db *gorm.DB, messageRepo *repository.MessageRepository, c
 		messageRepo:       messageRepo,
 		conversationCache: conversationCache,
 		baseCache:         cacheBackend,
+		uploadService:     uploadService,
 	}
 }
 
@@ -74,6 +77,12 @@ func (s *MessageService) SendMessage(ctx context.Context, senderID, receiverID s
 		return nil, err
 	}
 
+	if s.uploadService != nil {
+		if err := s.uploadService.ValidateChatMessageImageSegments(segments); err != nil {
+			return nil, err
+		}
+	}
+
 	msg := &model.Message{
 		ConversationID: conv.ID,
 		SenderID:       senderID,