初始提交：姜十三论坛 Jiang13 Forum

轻量自用论坛，Go 单二进制 + React SPA 内嵌 + SQLite。

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

frontend/src/components/CommentContent.tsx

@@ -0,0 +1,19 @@
+import { highlightMentions } from '../utils/content';
+
+interface Props {
+  content: string;
+  onMentionClick?: (name: string) => void;
+}
+
+/** 渲染评论正文（支持正文内 @ 高亮） */
+export default function CommentContent({ content, onMentionClick }: Props) {
+  return (
+    <div className="floor-body">
+      <span
+        dangerouslySetInnerHTML={{
+          __html: highlightMentions(content, onMentionClick),
+        }}
+      />
+    </div>
+  );
+}