移除旧版 HTML 模板与兼容层，并完善私信、举报、媒体存储与 SEO。

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

frontend/src/utils/openPost.ts

@@ -1,12 +1,19 @@
 import type { NavigateFunction } from 'react-router-dom';
+import { postPath, type PermalinkOpts } from './permalink';
+
+export type OpenForumPostOpts = PermalinkOpts & {
+  /** 跳转到指定楼层（#floor-N） */
+  floor?: number;
+};
 
 /** 按站点配置打开帖子详情（当前页跳转或新标签） */
 export function openForumPost(
   nav: NavigateFunction,
   postId: number,
   openInNewTab: boolean,
+  opts?: OpenForumPostOpts,
 ) {
-  const path = `/post/${postId}`;
+  const path = postPath(postId, opts) + (opts?.floor && opts.floor > 0 ? `#floor-${opts.floor}` : '');
   if (openInNewTab) {
     window.open(path, '_blank', 'noopener,noreferrer');
     return;