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/handler/admin_handler.go

@@ -165,14 +165,21 @@ func (h *AdminHandler) DeleteOption(c *gin.Context) {
 
 // ListPendingUsers GET /admin/users/pending
 func (h *AdminHandler) ListPendingUsers(c *gin.Context) {
-	users, err := h.adminService.ListPendingUsers()
+	users, photosByUser, err := h.adminService.ListPendingUsers()
 	if err != nil {
 		utils.Fail(c, http.StatusInternalServerError, "خطا در دریافت لیست کاربران", nil)
 		return
 	}
-	result := make([]dto.UserProfile, 0, len(users))
+	result := make([]dto.UserProfileWithPhotos, 0, len(users))
 	for i := range users {
-		result = append(result, toUserProfile(&users[i]))
+		photos := photosByUser[users[i].ID]
+		if photos == nil {
+			photos = []string{}
+		}
+		result = append(result, dto.UserProfileWithPhotos{
+			UserProfile: toUserProfile(&users[i]),
+			Photos:      photos,
+		})
 	}
 	utils.Success(c, http.StatusOK, "", result)
 }
@@ -382,6 +389,30 @@ func (h *AdminHandler) DeletePhoto(c *gin.Context) {
 	utils.Success(c, http.StatusOK, "عکس حذف شد", nil)
 }
 
+// ReportPhoto POST /admin/photos/:id/report   body: {reason}
+func (h *AdminHandler) ReportPhoto(c *gin.Context) {
+	id, err := strconv.ParseUint(c.Param("id"), 10, 64)
+	if err != nil {
+		utils.Fail(c, http.StatusBadRequest, "شناسه نامعتبر است", nil)
+		return
+	}
+	var req dto.ReportUserRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		utils.Fail(c, http.StatusBadRequest, "ورودی نامعتبر است (ذکر دلیل گزارش الزامی است)", err.Error())
+		return
+	}
+	report, err := h.adminService.ReportPhoto(uint(id), req.Reason)
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			utils.Fail(c, http.StatusNotFound, "عکس یافت نشد", nil)
+			return
+		}
+		utils.Fail(c, http.StatusBadRequest, err.Error(), nil)
+		return
+	}
+	utils.Success(c, http.StatusCreated, "گزارش ثبت شد", report)
+}
+
 // ---------------- سوالات پروفایل ----------------
 
 // ListQuestions GET /admin/profile-questions