fix(chat): 修复一键清理未读失败

backend/internal/modules/chat/handler_admin.go

@@ -82,6 +82,19 @@ func (h *Handler) AdminMarkRead(c *gin.Context) {
 	h.markRead(c, Principal{Type: "admin", ID: adminID})
 }
 
+func (h *Handler) AdminMarkAllRead(c *gin.Context) {
+	adminID, ok := currentAdminID(c)
+	if !ok {
+		response.Unauthorized(c, "缺少管理员上下文")
+		return
+	}
+	if err := h.service.MarkAllAdminConversationsRead(c.Request.Context(), adminID); err != nil {
+		writeChatError(c, err)
+		return
+	}
+	response.OK(c, gin.H{"read": true})
+}
+
 func (h *Handler) AdminTransfer(c *gin.Context) {
 	adminID, ok := currentAdminID(c)
 	if !ok {

backend/internal/modules/chat/message.go

@@ -239,3 +239,31 @@ func (r *Repository) MarkRead(ctx context.Context, principal Principal, conversa
 	}
 	return nil
 }
+
+// MarkAllAdminConversationsRead advances one admin's read cursor for every conversation in one transaction.
+func (r *Repository) MarkAllAdminConversationsRead(ctx context.Context, adminID uint64) error {
+	now := time.Now()
+	return r.db.WithContext(ctx).Transaction(func(tx *gorm.DB) error {
+		// 先补齐状态行，再更新游标。拆成两步可兼容本地 MySQL/MariaDB 对
+		// INSERT ... SELECT 同表读取并 ON DUPLICATE KEY UPDATE 的限制。
+		if err := tx.Exec(`
+			INSERT INTO chat_admin_conversation_states
+				(conversation_id, admin_user_id, remark, last_read_message_id, last_read_at)
+			SELECT c.id, ?, COALESCE(existing.remark, ''), COALESCE(c.last_message_id, 0), ?
+			FROM chat_conversations AS c
+			LEFT JOIN chat_admin_conversation_states AS existing
+				ON existing.conversation_id = c.id AND existing.admin_user_id = ?
+			WHERE existing.id IS NULL`, adminID, now, adminID).Error; err != nil {
+			return err
+		}
+		return tx.Exec(`
+			UPDATE chat_admin_conversation_states AS cas
+			JOIN chat_conversations AS c ON c.id = cas.conversation_id
+			SET cas.last_read_message_id = c.last_message_id,
+				cas.last_read_at = ?,
+				cas.updated_at = CURRENT_TIMESTAMP
+			WHERE cas.admin_user_id = ?
+			  AND c.last_message_id IS NOT NULL
+			  AND cas.last_read_message_id < c.last_message_id`, now, adminID).Error
+	})
+}

backend/internal/modules/chat/service.go

@@ -131,6 +131,16 @@ func (s *Service) MarkRead(ctx context.Context, principal Principal, conversatio
 	return s.repo.MarkRead(ctx, principal, conversationID)
 }
 
+func (s *Service) MarkAllAdminConversationsRead(ctx context.Context, adminID uint64) error {
+	if s.repo == nil {
+		return ErrDependencyUnavailable
+	}
+	if adminID == 0 {
+		return ErrPermissionDenied
+	}
+	return s.repo.MarkAllAdminConversationsRead(ctx, adminID)
+}
+
 func (s *Service) TransferConversation(ctx context.Context, principal Principal, conversationID uint64, req TransferRequest) error {
 	if s.repo == nil {
 		return ErrDependencyUnavailable

backend/internal/router/router.go

@@ -727,6 +727,7 @@ func New(cfg config.Config, deps Dependencies, logger *zap.Logger) *gin.Engine {
 			}
 			adminRoutes.GET("/chats", requirePerm("chat:view"), chatHandler.AdminList)
 			adminRoutes.GET("/chats/counts", requirePerm("chat:view"), chatHandler.AdminCounts)
+			adminRoutes.POST("/chats/read-all", requirePerm("chat:view"), chatHandler.AdminMarkAllRead)
 			adminRoutes.GET("/chats/:id", requirePerm("chat:view"), chatHandler.AdminDetail)
 			adminRoutes.GET("/chats/:id/messages", requirePerm("chat:view"), chatHandler.AdminMessages)
 			adminRoutes.POST("/chats/:id/messages", requirePerm("chat:send"), chatHandler.AdminSend)

frontend/src/features/admin/views/AdminChatsView.vue

@@ -1,8 +1,8 @@
 <script setup lang="ts">
 import { computed, nextTick, onBeforeUnmount, onMounted, ref } from 'vue'
 import { useRoute } from 'vue-router'
-import { ElMessage } from 'element-plus'
-import { Close, Picture } from '@element-plus/icons-vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
+import { Check, Close, Picture } from '@element-plus/icons-vue'
 import {
   fetchAdminChat,
   fetchAdminChatMessages,
@@ -10,6 +10,7 @@ import {
   fetchAdminChats,
   fetchQuickReplies,
   markAdminChatRead,
+  markAllAdminChatsRead,
   sendAdminChatMessage,
   updateChatRemark,
   type AdminChatCounts,
@@ -54,6 +55,7 @@ const activePaymentRecords = ref<AdminPayment[]>([])
 const loading = ref(false)
 const messageLoading = ref(false)
 const sending = ref(false)
+const clearingAll = ref(false)
 const uploading = ref(false)
 const content = ref('')
 const attachments = ref<string[]>([])
@@ -265,6 +267,29 @@ function refreshAll() {
   void Promise.all([loadConversations(true), loadCounts(true)])
 }
 
+async function clearAllUnread() {
+  if (clearingAll.value) return
+  try {
+    await ElMessageBox.confirm(
+      '将把全部客服会话标记为已读，不会删除聊天记录。后续新消息仍会正常提醒。',
+      '一键清理未读提醒',
+      { type: 'warning', confirmButtonText: '确认清理', cancelButtonText: '取消' }
+    )
+  } catch {
+    return
+  }
+  clearingAll.value = true
+  try {
+    await markAllAdminChatsRead()
+    await Promise.all([loadConversations(true), loadCounts(true)])
+    ElMessage.success('未读提醒已清理')
+  } catch {
+    ElMessage.error('清理失败，请稍后重试')
+  } finally {
+    clearingAll.value = false
+  }
+}
+
 async function loadQuickReplies() {
   try {
     quickReplies.value = await fetchQuickReplies()
@@ -654,6 +679,7 @@ function firstQueryValue(value: unknown) {
       <div class="head-right">
         <NotificationSettings scope="admin" />
         <el-button @click="quickReplyVisible = true">快捷回复管理</el-button>
+        <el-button :loading="clearingAll" :icon="Check" @click="clearAllUnread">一键清理</el-button>
         <el-button :loading="loading" @click="refreshAll">刷新</el-button>
       </div>
     </div>

frontend/src/features/chats/api/chats.ts

@@ -170,6 +170,11 @@ export async function fetchAdminChatCounts(query: AdminChatQuery = {}) {
   return data.data
 }
 
+export async function markAllAdminChatsRead() {
+  const { data } = await apiClient.post<ApiResponse<{ read: boolean }>>('/admin/chats/read-all')
+  return data.data
+}
+
 export async function fetchAdminChat(id: number) {
   const { data } = await apiClient.get<ApiResponse<ChatConversation>>(`/admin/chats/${id}`)
   return data.data