Add notification settings, account deletion, photo reporting, and pending-user photos

Addresses user bug reports: settings pages needed real notification
preferences and account deletion, admin needed a way to flag a specific
photo independent of deleting it, and the pending-approval users list
needed to surface applicant photos for review.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

internal/dto/profile_dto.go

@@ -16,3 +16,10 @@ type CheckInResult struct {
 	StreakCount int  `json:"streak_count"`
 	IsNewToday  bool `json:"is_new_today"`
 }
+
+// UpdateNotificationSettingsRequest ترجیحات اعلان کاربر
+type UpdateNotificationSettingsRequest struct {
+	NotifyMatches  bool `json:"notify_matches"`
+	NotifyMessages bool `json:"notify_messages"`
+	NotifyLikes    bool `json:"notify_likes"`
+}