feat(comments): 支持编辑与管理可见历史，采纳展示改用楼层号

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

frontend/app/admin/content/ContentAdmin.tsx

@@ -7,6 +7,7 @@ import {
   ChevronRight,
   FileText,
   FolderOpen,
+  History,
   Loader2,
   MessagesSquare,
   RotateCcw,
@@ -36,6 +37,7 @@ import Avatar from "@/components/Avatar";
 import ConfirmDialog from "@/components/ConfirmDialog";
 import StaffDeletePostModal from "@/components/StaffDeletePostModal";
 import DeleteCommentModal from "@/components/DeleteCommentModal";
+import CommentEditHistoryModal from "@/components/CommentEditHistoryModal";
 
 const PAGE_SIZE = 15;
 
@@ -145,6 +147,7 @@ export default function ContentAdmin({
   const [staffDeleteBusy, setStaffDeleteBusy] = useState(false);
   const [staffDeleteComment, setStaffDeleteComment] = useState<AdminContentComment | null>(null);
   const [staffDeleteCommentBusy, setStaffDeleteCommentBusy] = useState(false);
+  const [historyCommentId, setHistoryCommentId] = useState<number | null>(null);
 
   const refreshCounts = useCallback(() => {
     apiAdminContentCounts().then(setCounts).catch(() => {});
@@ -570,6 +573,13 @@ export default function ContentAdmin({
                   </p>
                 </div>
                 <div className="flex items-center gap-1 shrink-0">
+                  <button
+                    type="button"
+                    className="btn btn-line btn-sm"
+                    onClick={() => setHistoryCommentId(c.id)}
+                  >
+                    <History size={14} /> 历史
+                  </button>
                   {c.deleted ? (
                     <>
                       <button
@@ -713,6 +723,12 @@ export default function ContentAdmin({
             .finally(() => setStaffDeleteCommentBusy(false));
         }}
       />
+
+      <CommentEditHistoryModal
+        open={historyCommentId != null}
+        commentId={historyCommentId}
+        onClose={() => setHistoryCommentId(null)}
+      />
     </div>
   );
 }