feat: @提及发送通知 + 通知点击定位高亮

- 新增 NotifyCommentMention 通知类型，归属 mention 分类 TAB
- parseMentions 中向被@用户发送通知（排除自己和重复通知）
- 消息中心 mention 通知可点击跳转至文章页面
- 通过 mention 通知进入时，来源评论置顶并持久半透明高亮
- 普通评论链接保持原有短暂高亮行为不变

internal/model/notification.go

@@ -13,6 +13,7 @@ const (
 	NotifyCommentReply    = "comment_reply"
 	NotifyLikeAggregated  = "like_aggregated"  // 每日聚合点赞通知
 	NotifyFollow          = "follow"            // 关注通知
+	NotifyCommentMention  = "comment_mention"   // 评论@提及通知
 )
 
 // Notification 消息/通知模型
@@ -39,6 +40,7 @@ var NotifyTypeNames = map[string]string{
 	NotifyLevelUp:        "等级提升",
 	NotifyComment:        "评论",
 	NotifyCommentReply:   "回复",
+	NotifyCommentMention: "@ 提及",
 	NotifyLikeAggregated: "点赞",
 	NotifyFollow:         "关注",
 }
@@ -54,6 +56,7 @@ var NotifyCategory = map[string]string{
 	NotifyLevelUp:        "system",
 	NotifyComment:        "mention",
 	NotifyCommentReply:   "mention",
+	NotifyCommentMention: "mention",
 	NotifyLikeAggregated: "like",
 	NotifyFollow:         "follow",
 }

internal/service/comment_service.go

@@ -55,15 +55,15 @@ func (s *CommentService) CreateRoot(userID uint, postID uint, body string) (*mod
 	// 文章评论数+1
 	_ = s.repo.IncrCommentsCount(postID)
 
-	// 解析 @ 提及
+	// 解析 @ 提及 + 发送通知
-	s.parseMentions(comment.ID, body)
-
-	// 通知文章作者（评论者 ≠ 作者），RelatedID 存 postID 以便消息页生成跳转链接
-	if s.notifier != nil && userID != postAuthorID {
 	commenterName, _ := s.repo.GetUsernameByID(userID)
 	if commenterName == "" {
 		commenterName = "用户"
 	}
+	s.parseMentions(comment.ID, postID, userID, commenterName, body)
+
+	// 通知文章作者（评论者 ≠ 作者），RelatedID 存 postID 以便消息页生成跳转链接
+	if s.notifier != nil && userID != postAuthorID {
 		s.notifier.Create(postAuthorID, model.NotifyComment,
 			"新评论",
 			fmt.Sprintf("%s 评论了你的文章", commenterName),
@@ -103,15 +103,15 @@ func (s *CommentService) CreateReply(userID uint, parentID uint, body string) (*
 	// 文章评论数+1
 	_ = s.repo.IncrCommentsCount(parent.PostID)
 
-	// 解析 @ 提及
+	// 解析 @ 提及 + 发送通知
-	s.parseMentions(comment.ID, body)
-
-	// 通知被回复者（不自己回复自己），RelatedID 存 postID 以便消息页生成跳转链接
-	if s.notifier != nil && parent.UserID != userID {
 	commenterName, _ := s.repo.GetUsernameByID(userID)
 	if commenterName == "" {
 		commenterName = "用户"
 	}
+	s.parseMentions(comment.ID, parent.PostID, userID, commenterName, body)
+
+	// 通知被回复者（不自己回复自己），RelatedID 存 postID 以便消息页生成跳转链接
+	if s.notifier != nil && parent.UserID != userID {
 		s.notifier.Create(parent.UserID, model.NotifyCommentReply,
 			"新回复",
 			fmt.Sprintf("%s 回复了你的评论", commenterName),
@@ -209,10 +209,12 @@ func (s *CommentService) SearchUsers(keyword string, followerUID uint) ([]model.
 	return users, nil
 }
 
-// parseMentions 解析@用户并存储到 comment_mentions 表
+// parseMentions 解析@用户，存储到 comment_mentions 表，并向被@用户发送通知
-func (s *CommentService) parseMentions(commentID uint, body string) {
+func (s *CommentService) parseMentions(commentID uint, postID uint, commenterID uint, commenterName string, body string) {
 	matches := mentionPattern.FindAllStringSubmatch(body, -1)
 	seen := make(map[string]bool)
+	notified := make(map[uint]bool) // 防止重复通知同一用户
+
 	for _, m := range matches {
 		username := m[1]
 		if seen[username] {
@@ -220,12 +222,23 @@ func (s *CommentService) parseMentions(commentID uint, body string) {
 		}
 		seen[username] = true
 		rows, _ := s.repo.SearchUsersByLevel(username, 2, 1, 0)
-		if len(rows) > 0 {
+		if len(rows) == 0 {
+			continue
+		}
+		mentionedUID := rows[0].UID
 		_ = s.repo.CreateMention(&model.CommentMention{
 			CommentID:        commentID,
-				UID:              rows[0].UID,
+			UID:              mentionedUID,
 			OriginalUsername: username,
 		})
+
+		// 向被@用户发送通知（排除自己@自己、重复通知）
+		if s.notifier != nil && mentionedUID != commenterID && !notified[mentionedUID] {
+			notified[mentionedUID] = true
+			s.notifier.Create(mentionedUID, model.NotifyCommentMention,
+				"新提及",
+				fmt.Sprintf("%s 在评论中 @ 了你", commenterName),
+				&postID, &commentID)
 		}
 	}
 }

internal/service/notification_notify.go

@@ -49,7 +49,7 @@ func categoryTypes(category string) []string {
 	case "system":
 		return []string{model.NotifyAuditApproved, model.NotifyAuditRejected, model.NotifyPostApproved, model.NotifyPostRejected, model.NotifyPostLocked, model.NotifyPostUnlocked, model.NotifyLevelUp}
 	case "mention":
-		return []string{model.NotifyComment, model.NotifyCommentReply}
+		return []string{model.NotifyComment, model.NotifyCommentReply, model.NotifyCommentMention}
 	case "like":
 		return []string{model.NotifyLikeAggregated}
 	case "follow":

templates/MetaLab-2026/html/messages/index.html

@@ -97,6 +97,12 @@
                 {{else}}
                     {{$link = printf "/posts/%d#comments" (derefUint $m.RelatedID)}}
                 {{end}}
+            {{else if eq $m.NotifyType "comment_mention"}}
+                {{if $m.CommentID}}
+                    {{$link = printf "/posts/%d#mention-%d" (derefUint $m.RelatedID) (derefUint $m.CommentID)}}
+                {{else}}
+                    {{$link = printf "/posts/%d#comments" (derefUint $m.RelatedID)}}
+                {{end}}
             {{else if or (eq $m.NotifyType "audit_approved") (eq $m.NotifyType "audit_rejected")}}
                 {{$link = "/settings"}}
             {{else if eq $m.NotifyType "follow"}}

templates/MetaLab-2026/static/css/posts.css

@@ -1096,6 +1096,12 @@
     border-bottom: none;
 }
 
+/* @提及通知进入：持久半透明高亮 */
+.comment-card.highlight-mention,
+.comment-reply-card.highlight-mention {
+    background: rgba(255, 248, 225, 0.5) !important;
+}
+
 .comment-header {
     display: flex;
     justify-content: space-between;

templates/MetaLab-2026/static/js/post-comments.js

@@ -498,21 +498,45 @@
     }
 
     // ====== 评论高亮 ======
-    function highlightComment(commentId) {
+    function highlightComment(commentId, persistent) {
         var card = commentsList.querySelector('.comment-card[data-id="' + commentId + '"]') ||
                    commentsList.querySelector('.comment-reply-card[data-id="' + commentId + '"]');
         if (card) {
             commentsList.insertBefore(card, commentsList.firstChild);
             card.scrollIntoView({ behavior: 'smooth', block: 'start' });
+            if (persistent) {
+                card.classList.add('highlight-mention');
+            } else {
                 card.style.background = '#fff8e1';
                 card.style.transition = 'background 1.5s';
                 setTimeout(function() { card.style.background = ''; }, 2000);
+            }
             return true;
         }
         return false;
     }
 
     var hash = window.location.hash;
+
+    // @提及通知进入：置顶 + 持久高亮
+    var mentionMatch = hash.match(/^#mention-(\d+)$/);
+    if (mentionMatch) {
+        var mentionCommentId = mentionMatch[1];
+        var mentionInterval = setInterval(function() {
+            if (highlightComment(mentionCommentId, true)) {
+                clearInterval(mentionInterval);
+            }
+        }, 300);
+        setTimeout(function() {
+            clearInterval(mentionInterval);
+            if (!commentsList.querySelector('.comment-card[data-id="' + mentionCommentId + '"]') &&
+                !commentsList.querySelector('.comment-reply-card[data-id="' + mentionCommentId + '"]')) {
+                showToast('该评论已不存在');
+            }
+        }, 3000);
+    }
+
+    // 普通评论/回复链接：短暂高亮
     var commentMatch = hash.match(/^#comment-(\d+)$/);
     if (commentMatch) {
         var targetCommentId = commentMatch[1];