增加内容可搜索字段，屏蔽各种标记。

handlers/backend/post.go

@@ -199,15 +199,16 @@ func CreatePost(c *gin.Context) {
 	userID, _ := c.Get("userID")
 
 	post := models.Post{
-		Title:      req.Title,
-		Slug:       generateSlug(req.Title),
-		Content:    req.Content,
-		Summary:    req.Summary,
-		Cover:      req.Cover,
-		AuthorID:   userID.(uint),
-		CategoryID: req.CategoryID,
-		Status:     req.Status,
-		IsTop:      req.IsTop && isAdmin(c), // 非管理员不允许置顶
+		Title:          req.Title,
+		Slug:           generateSlug(req.Title),
+		Content:        req.Content,
+		SearchableText: string(utils.GenerateSearchableText(req.Content)),
+		Summary:        req.Summary,
+		Cover:          req.Cover,
+		AuthorID:       userID.(uint),
+		CategoryID:     req.CategoryID,
+		Status:         req.Status,
+		IsTop:          req.IsTop && isAdmin(c), // 非管理员不允许置顶
 	}
 
 	if req.Status == "published" {
@@ -269,6 +270,7 @@ func UpdatePost(c *gin.Context) {
 	}
 	if req.Content != "" {
 		updates["content"] = req.Content
+		updates["searchable_text"] = string(utils.GenerateSearchableText(req.Content))
 	}
 	if req.Summary != "" {
 		updates["summary"] = req.Summary