feat: 完整内容 Limits 与伪静态 Admin

设置页可配字数/编辑窗/分页与伪静态后缀；公开帖/板/用户链接走规范路径并 301。

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

templates/favorites/list.tmpl

@@ -9,7 +9,7 @@
   <ul class="j13-post-list">
     {{range .Items}}
     <li class="j13-post-item">
-      <a class="j13-post-item__title" href="/post/{{.PostID}}">{{.Title}}</a>
+      <a class="j13-post-item__title" href="{{.Href}}"{{if $.OpenPostsInNewTab}} target="_blank" rel="noopener"{{end}}>{{.Title}}</a>
       <div class="j13-post-item__meta">
         {{if .AuthorName}}<span>{{.AuthorName}}</span>{{end}}
         {{if .BoardName}}<span>{{.BoardName}}</span>{{end}}