feat: 实时消息与管理端运营能力

新增群聊/私信与公共 WebSocket 总线，站长用户内容档案，并将通知与待审角标改为推送驱动；同步精简管理仪表盘并修复主题换肤 DOM 冲突。

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

backend/handler/comment.go

@@ -23,17 +23,22 @@ func (h *Handlers) PostComments(c *gin.Context) {
 
 	// 待审/被拒帖子的评论不对公众开放
 	var viewerID uint
+	var actor *service.Actor
 	var loadActor func() *service.Actor
 	if claims := middleware.CurrentUser(c); claims != nil {
 		viewerID = claims.ID
 		loadActor = h.actorLoader(claims.ID)
+		if a, err := h.Auth.LoadActor(claims.ID); err == nil {
+			actor = a
+		}
 	}
 	if err := h.Post.EnsurePostVisible(uint(id), viewerID, loadActor); err != nil {
 		c.JSON(http.StatusNotFound, gin.H{"error": "帖子不存在"})
 		return
 	}
+	boardID, _ := h.Post.GetBoardID(uint(id))
 
-	comments, floors, totalComments, err := h.Comment.ListFloorPaged(uint(id), page, size)
+	comments, floors, totalComments, err := h.Comment.ListFloorPaged(uint(id), boardID, viewerID, actor, page, size)
 	if err != nil {
 		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
 		return
@@ -86,6 +91,13 @@ func (h *Handlers) CreateComment(c *gin.Context) {
 			// 子回复：通知父评论作者（Notification.Create 内部排除自我通知）
 			h.Notification.Create(parent.UserID, claims.ID, model.NotificationTypeReply, uint(id), comment.ID, req.Content)
 		}
+		if boardID, e := h.Post.GetBoardID(uint(id)); e == nil {
+			h.broadcastFeedChanged("comment", uint(id), boardID, claims.ID)
+		}
+	} else if comment.Status == model.ContentStatusPending {
+		if boardID, e := h.Post.GetBoardID(uint(id)); e == nil {
+			h.notifyPendingReview(boardID, claims.ID, uint(id), comment.ID, "有新评论待审核")
+		}
 	}
 	c.JSON(http.StatusOK, gin.H{"comment": comment})
 }