feat(usage): 添加清理任务与统计过滤

backend/internal/handler/dto/mappers.go

@@ -340,6 +340,36 @@ func UsageLogFromServiceAdmin(l *service.UsageLog) *UsageLog {
 	return usageLogFromServiceBase(l, AccountSummaryFromService(l.Account), true)
 }
 
+func UsageCleanupTaskFromService(task *service.UsageCleanupTask) *UsageCleanupTask {
+	if task == nil {
+		return nil
+	}
+	return &UsageCleanupTask{
+		ID:     task.ID,
+		Status: task.Status,
+		Filters: UsageCleanupFilters{
+			StartTime:   task.Filters.StartTime,
+			EndTime:     task.Filters.EndTime,
+			UserID:      task.Filters.UserID,
+			APIKeyID:    task.Filters.APIKeyID,
+			AccountID:   task.Filters.AccountID,
+			GroupID:     task.Filters.GroupID,
+			Model:       task.Filters.Model,
+			Stream:      task.Filters.Stream,
+			BillingType: task.Filters.BillingType,
+		},
+		CreatedBy:    task.CreatedBy,
+		DeletedRows:  task.DeletedRows,
+		ErrorMessage: task.ErrorMsg,
+		CanceledBy:   task.CanceledBy,
+		CanceledAt:   task.CanceledAt,
+		StartedAt:    task.StartedAt,
+		FinishedAt:   task.FinishedAt,
+		CreatedAt:    task.CreatedAt,
+		UpdatedAt:    task.UpdatedAt,
+	}
+}
+
 func SettingFromService(s *service.Setting) *Setting {
 	if s == nil {
 		return nil

backend/internal/handler/dto/types.go

@@ -223,6 +223,33 @@ type UsageLog struct {
 	Subscription *UserSubscription `json:"subscription,omitempty"`
 }
 
+type UsageCleanupFilters struct {
+	StartTime   time.Time `json:"start_time"`
+	EndTime     time.Time `json:"end_time"`
+	UserID      *int64    `json:"user_id,omitempty"`
+	APIKeyID    *int64    `json:"api_key_id,omitempty"`
+	AccountID   *int64    `json:"account_id,omitempty"`
+	GroupID     *int64    `json:"group_id,omitempty"`
+	Model       *string   `json:"model,omitempty"`
+	Stream      *bool     `json:"stream,omitempty"`
+	BillingType *int8     `json:"billing_type,omitempty"`
+}
+
+type UsageCleanupTask struct {
+	ID           int64               `json:"id"`
+	Status       string              `json:"status"`
+	Filters      UsageCleanupFilters `json:"filters"`
+	CreatedBy    int64               `json:"created_by"`
+	DeletedRows  int64               `json:"deleted_rows"`
+	ErrorMessage *string             `json:"error_message,omitempty"`
+	CanceledBy   *int64              `json:"canceled_by,omitempty"`
+	CanceledAt   *time.Time          `json:"canceled_at,omitempty"`
+	StartedAt    *time.Time          `json:"started_at,omitempty"`
+	FinishedAt   *time.Time          `json:"finished_at,omitempty"`
+	CreatedAt    time.Time           `json:"created_at"`
+	UpdatedAt    time.Time           `json:"updated_at"`
+}
+
 // AccountSummary is a minimal account info for usage log display.
 // It intentionally excludes sensitive fields like Credentials, Proxy, etc.
 type AccountSummary struct {