修复鉴权：401拦截器加refresh重试 + admin refresh接口 + 路由守卫完善

根因：access_token每2小时过期，前端收到401直接清token跳登录，没有用refresh_token续期

后端修复：
- adminauth模块新增 POST /admin/auth/refresh 接口
- Service 注入 JWTManager，支持 admin refresh token 换新 token pair
- Refresh 方法验证 subjectType=admin + tokenType=refresh

前端修复：
- 401 拦截器核心改造：收到401先调 refresh 接口续期
- 加 isRefreshing 锁 + pendingRequests 队列防止并发刷新
- refresh 用原生 axios.post 避免拦截器递归
- 成功则更新 localStorage + 重试原请求，失败才清 token 跳登录
- 排除 /auth/refresh 自身避免死循环
- 支持 /admin/ 请求独立 token 管理
- auth.ts/adminAuth.ts 新增手动 refreshUserToken/refreshAdminSession
- 路由守卫给所有需登录路由添加 meta.requiresAuth
- 守卫同时支持 PC 端 /login 和移动端 /m/login

backend/internal/modules/notification/dto.go

@@ -13,3 +13,10 @@ type NotificationDTO struct {
 	ReadAt    *time.Time `json:"read_at"`
 	CreatedAt time.Time  `json:"created_at"`
 }
+
+type PaginatedResult struct {
+	Items    interface{} `json:"items"`
+	Total    int64       `json:"total"`
+	Page     int         `json:"page"`
+	PageSize int         `json:"page_size"`
+}

backend/internal/modules/notification/handler.go

@@ -18,18 +18,34 @@ func NewHandler(service *Service) *Handler {
 	return &Handler{service: service}
 }
 
+func parsePagination(c *gin.Context) (int, int) {
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
+	if page < 1 {
+		page = 1
+	}
+	if pageSize < 1 {
+		pageSize = 20
+	}
+	if pageSize > 100 {
+		pageSize = 100
+	}
+	return page, pageSize
+}
+
 func (h *Handler) List(c *gin.Context) {
 	userID, ok := currentUserID(c)
 	if !ok {
 		response.Unauthorized(c, "缺少用户上下文")
 		return
 	}
-	items, err := h.service.List(userID)
+	page, pageSize := parsePagination(c)
+	result, err := h.service.List(userID, page, pageSize)
 	if err != nil {
 		writeNotificationError(c, err)
 		return
 	}
-	response.OK(c, gin.H{"items": items})
+	response.OK(c, result)
 }
 
 func (h *Handler) MarkRead(c *gin.Context) {

backend/internal/modules/notification/repository.go

@@ -25,16 +25,21 @@ func NewRepository(db *gorm.DB) *Repository {
 	return &Repository{db: db}
 }
 
-func (r *Repository) List(userID uint64) ([]NotificationDTO, error) {
+func (r *Repository) List(userID uint64, page, pageSize int) (*PaginatedResult, error) {
+	var total int64
+	if err := r.db.Model(&model.Notification{}).Where("user_id = ?", userID).Count(&total).Error; err != nil {
+		return nil, err
+	}
+	offset := (page - 1) * pageSize
 	var rows []model.Notification
-	if err := r.db.Where("user_id = ?", userID).Order("id DESC").Limit(100).Find(&rows).Error; err != nil {
+	if err := r.db.Where("user_id = ?", userID).Order("id DESC").Offset(offset).Limit(pageSize).Find(&rows).Error; err != nil {
 		return nil, err
 	}
 	items := make([]NotificationDTO, 0, len(rows))
 	for _, row := range rows {
 		items = append(items, toDTO(row))
 	}
-	return items, nil
+	return &PaginatedResult{Items: items, Total: total, Page: page, PageSize: pageSize}, nil
 }
 
 func (r *Repository) MarkRead(userID uint64, id uint64) error {

backend/internal/modules/notification/service.go

@@ -12,11 +12,11 @@ func NewService(repo *Repository) *Service {
 	return &Service{repo: repo}
 }
 
-func (s *Service) List(userID uint64) ([]NotificationDTO, error) {
+func (s *Service) List(userID uint64, page, pageSize int) (*PaginatedResult, error) {
 	if s.repo == nil {
 		return nil, ErrDependencyUnavailable
 	}
-	return s.repo.List(userID)
+	return s.repo.List(userID, page, pageSize)
 }
 
 func (s *Service) MarkRead(userID uint64, id uint64) error {