feat(admin): 完善站点设置、内容回收站与后台菜单分组

新增站点设置与内容管理（含已删除恢复/清除），用户页改用独有运营指标，并按概览/内容/成员与经济/站点重组侧栏。

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/service/admin_user.go

@@ -59,12 +59,17 @@ type AdminUserItem struct {
 	LastLoginAt  *time.Time `json:"last_login_at"`
 }
 
-// AdminUserSummary 列表顶部汇总（总数/管理团队/封禁/今日新增）
+// AdminUserSummary 列表顶部汇总
+// - online / in_cooldown / active_7d / failed_logins_24h：用户页独有运营指标
+// - total / admins / banned：筛选 Tab 角标（不在顶部卡片展示，避免与仪表盘重复）
 type AdminUserSummary struct {
-	Total    int64 `json:"total"`
-	Admins   int64 `json:"admins"`
-	Banned   int64 `json:"banned"`
-	TodayNew int64 `json:"today_new"`
+	Online          int64 `json:"online"`
+	InCooldown       int64 `json:"in_cooldown"`
+	Active7d        int64 `json:"active_7d"`
+	FailedLogins24h int64 `json:"failed_logins_24h"`
+	Total           int64 `json:"total"`
+	Admins          int64 `json:"admins"`
+	Banned          int64 `json:"banned"`
 }
 
 // staffRoles 管理团队角色集合
@@ -131,14 +136,31 @@ func (s *AdminUserService) List(q AdminUserListQuery) (*AdminUserListResult, err
 
 	items := s.toItems(users)
 
-	// 汇总数据（不受筛选条件影响，始终反映全站）
+	// 汇总：用户页独有指标（避免与仪表盘站点总量重复）
 	now := time.Now()
-	dayStart := time.Date(now.Year(), now.Month(), now.Day(), 0, 0, 0, 0, now.Location())
+	onlineSince := now.Add(-onlineThreshold)
+	hours, _ := (&SettingService{db: s.db}).PostCooldownHours()
+	activeSince := now.Add(-7 * 24 * time.Hour)
+	failSince := now.Add(-24 * time.Hour)
 	summary := AdminUserSummary{}
+	s.db.Model(&model.User{}).
+		Where("banned = ? AND last_seen_at IS NOT NULL AND last_seen_at >= ?", false, onlineSince).
+		Count(&summary.Online)
+	if hours > 0 {
+		cooldownSince := now.Add(-time.Duration(hours) * time.Hour)
+		s.db.Model(&model.User{}).
+			Where("banned = ? AND role = ? AND created_at >= ?", false, model.RoleUser, cooldownSince).
+			Count(&summary.InCooldown)
+	}
+	s.db.Model(&model.User{}).
+		Where("last_seen_at IS NOT NULL AND last_seen_at >= ?", activeSince).
+		Count(&summary.Active7d)
+	s.db.Model(&model.LoginLog{}).
+		Where("success = ? AND created_at >= ?", false, failSince).
+		Count(&summary.FailedLogins24h)
 	s.db.Model(&model.User{}).Count(&summary.Total)
 	s.db.Model(&model.User{}).Where("role IN ?", staffRoles).Count(&summary.Admins)
 	s.db.Model(&model.User{}).Where("banned = ?", true).Count(&summary.Banned)
-	s.db.Model(&model.User{}).Where("created_at >= ?", dayStart).Count(&summary.TodayNew)
 
 	return &AdminUserListResult{
 		Users:   items,