feat(conversations): add notification mute functionality for conversations

- Rename Muted field to NotificationMuted across model, DTOs and converters
- Add UpdateNotificationMuted repository method with upsert support
- Add SetConversationNotificationMuted service method
- Add PUT /:id/notification_muted route for setting mute status
- Improve S3 storage resilience by skipping bucket check on access denied

internal/dto/dto.go

@@ -350,26 +350,27 @@ type MessageResponse struct {
 
 // ConversationResponse 会话响应
 type ConversationResponse struct {
-	ID            string           `json:"id"`
-	Type          string           `json:"type"`
-	IsPinned      bool             `json:"is_pinned"`
-	Group         *GroupResponse   `json:"group,omitempty"`
-	LastSeq       int64            `json:"last_seq"`
-	LastMessage   *MessageResponse `json:"last_message"`
-	LastMessageAt string           `json:"last_message_at"`
-	UnreadCount   int              `json:"unread_count"`
-	Participants  []*UserResponse  `json:"participants,omitempty"` // 私聊时使用
-	MemberCount   int              `json:"member_count,omitempty"` // 群聊时使用
-	CreatedAt     string           `json:"created_at"`
-	UpdatedAt     string           `json:"updated_at"`
+	ID                string           `json:"id"`
+	Type              string           `json:"type"`
+	IsPinned          bool             `json:"is_pinned"`
+	NotificationMuted bool             `json:"notification_muted"`
+	Group             *GroupResponse   `json:"group,omitempty"`
+	LastSeq           int64            `json:"last_seq"`
+	LastMessage       *MessageResponse `json:"last_message"`
+	LastMessageAt     string           `json:"last_message_at"`
+	UnreadCount       int              `json:"unread_count"`
+	Participants      []*UserResponse  `json:"participants,omitempty"` // 私聊时使用
+	MemberCount       int              `json:"member_count,omitempty"` // 群聊时使用
+	CreatedAt         string           `json:"created_at"`
+	UpdatedAt         string           `json:"updated_at"`
 }
 
 // ConversationParticipantResponse 会话参与者响应
 type ConversationParticipantResponse struct {
-	UserID      string `json:"user_id"`
-	LastReadSeq int64  `json:"last_read_seq"`
-	Muted       bool   `json:"muted"`
-	IsPinned    bool   `json:"is_pinned"`
+	UserID            string `json:"user_id"`
+	LastReadSeq       int64  `json:"last_read_seq"`
+	NotificationMuted bool   `json:"notification_muted"`
+	IsPinned          bool   `json:"is_pinned"`
 }
 
 // ==================== Auth DTOs ====================
@@ -453,18 +454,19 @@ type ConversationListResponse struct {
 
 // ConversationDetailResponse 会话详情响应
 type ConversationDetailResponse struct {
-	ID               string           `json:"id"`
-	Type             string           `json:"type"`
-	IsPinned         bool             `json:"is_pinned"`
-	LastSeq          int64            `json:"last_seq"`
-	LastMessage      *MessageResponse `json:"last_message"`
-	LastMessageAt    string           `json:"last_message_at"`
-	UnreadCount      int64            `json:"unread_count"`
-	Participants     []*UserResponse  `json:"participants"`
-	MyLastReadSeq    int64            `json:"my_last_read_seq"`    // 当前用户的已读位置
-	OtherLastReadSeq int64            `json:"other_last_read_seq"` // 对方用户的已读位置
-	CreatedAt        string           `json:"created_at"`
-	UpdatedAt        string           `json:"updated_at"`
+	ID                string           `json:"id"`
+	Type              string           `json:"type"`
+	IsPinned          bool             `json:"is_pinned"`
+	NotificationMuted bool             `json:"notification_muted"`
+	LastSeq           int64            `json:"last_seq"`
+	LastMessage       *MessageResponse `json:"last_message"`
+	LastMessageAt     string           `json:"last_message_at"`
+	UnreadCount       int64            `json:"unread_count"`
+	Participants      []*UserResponse  `json:"participants"`
+	MyLastReadSeq     int64            `json:"my_last_read_seq"`    // 当前用户的已读位置
+	OtherLastReadSeq  int64            `json:"other_last_read_seq"` // 对方用户的已读位置
+	CreatedAt         string           `json:"created_at"`
+	UpdatedAt         string           `json:"updated_at"`
 }
 
 // UnreadCountResponse 未读数响应

internal/dto/message_converter.go

@@ -38,7 +38,7 @@ func ConvertMessageToResponse(message *model.Message) *MessageResponse {
 // participants: 会话参与者列表（用户信息）
 // unreadCount: 当前用户的未读消息数
 // lastMessage: 最后一条消息
-func ConvertConversationToResponse(conv *model.Conversation, participants []*model.User, unreadCount int, lastMessage *model.Message, isPinned bool) *ConversationResponse {
+func ConvertConversationToResponse(conv *model.Conversation, participants []*model.User, unreadCount int, lastMessage *model.Message, isPinned bool, notificationMuted bool) *ConversationResponse {
 	if conv == nil {
 		return nil
 	}
@@ -55,22 +55,23 @@ func ConvertConversationToResponse(conv *model.Conversation, participants []*mod
 	}
 
 	return &ConversationResponse{
-		ID:            conv.ID,
-		Type:          string(conv.Type),
-		IsPinned:      isPinned,
-		Group:         groupResponse,
-		LastSeq:       conv.LastSeq,
-		LastMessage:   ConvertMessageToResponse(lastMessage),
-		LastMessageAt: FormatTimePointer(conv.LastMsgTime),
-		UnreadCount:   unreadCount,
-		Participants:  participantResponses,
-		CreatedAt:     FormatTime(conv.CreatedAt),
-		UpdatedAt:     FormatTime(conv.UpdatedAt),
+		ID:                conv.ID,
+		Type:              string(conv.Type),
+		IsPinned:          isPinned,
+		NotificationMuted: notificationMuted,
+		Group:             groupResponse,
+		LastSeq:           conv.LastSeq,
+		LastMessage:       ConvertMessageToResponse(lastMessage),
+		LastMessageAt:     FormatTimePointer(conv.LastMsgTime),
+		UnreadCount:       unreadCount,
+		Participants:      participantResponses,
+		CreatedAt:         FormatTime(conv.CreatedAt),
+		UpdatedAt:         FormatTime(conv.UpdatedAt),
 	}
 }
 
 // ConvertConversationToDetailResponse 将Conversation转换为ConversationDetailResponse
-func ConvertConversationToDetailResponse(conv *model.Conversation, participants []*model.User, unreadCount int64, lastMessage *model.Message, myLastReadSeq int64, otherLastReadSeq int64, isPinned bool) *ConversationDetailResponse {
+func ConvertConversationToDetailResponse(conv *model.Conversation, participants []*model.User, unreadCount int64, lastMessage *model.Message, myLastReadSeq int64, otherLastReadSeq int64, isPinned bool, notificationMuted bool) *ConversationDetailResponse {
 	if conv == nil {
 		return nil
 	}
@@ -81,18 +82,19 @@ func ConvertConversationToDetailResponse(conv *model.Conversation, participants
 	}
 
 	return &ConversationDetailResponse{
-		ID:               conv.ID,
-		Type:             string(conv.Type),
-		IsPinned:         isPinned,
-		LastSeq:          conv.LastSeq,
-		LastMessage:      ConvertMessageToResponse(lastMessage),
-		LastMessageAt:    FormatTimePointer(conv.LastMsgTime),
-		UnreadCount:      unreadCount,
-		Participants:     participantResponses,
-		MyLastReadSeq:    myLastReadSeq,
-		OtherLastReadSeq: otherLastReadSeq,
-		CreatedAt:        FormatTime(conv.CreatedAt),
-		UpdatedAt:        FormatTime(conv.UpdatedAt),
+		ID:                conv.ID,
+		Type:              string(conv.Type),
+		IsPinned:          isPinned,
+		NotificationMuted: notificationMuted,
+		LastSeq:           conv.LastSeq,
+		LastMessage:       ConvertMessageToResponse(lastMessage),
+		LastMessageAt:     FormatTimePointer(conv.LastMsgTime),
+		UnreadCount:       unreadCount,
+		Participants:      participantResponses,
+		MyLastReadSeq:     myLastReadSeq,
+		OtherLastReadSeq:  otherLastReadSeq,
+		CreatedAt:         FormatTime(conv.CreatedAt),
+		UpdatedAt:         FormatTime(conv.UpdatedAt),
 	}
 }
 
@@ -109,7 +111,7 @@ func ConvertMessagesToResponse(messages []*model.Message) []*MessageResponse {
 func ConvertConversationsToResponse(convs []*model.Conversation) []*ConversationResponse {
 	result := make([]*ConversationResponse, 0, len(convs))
 	for _, conv := range convs {
-		result = append(result, ConvertConversationToResponse(conv, nil, 0, nil, false))
+		result = append(result, ConvertConversationToResponse(conv, nil, 0, nil, false, false))
 	}
 	return result
 }