Tighten WebCRT SFTP panel typography to match chrome.

Use compact muted headers and denser rows so the file table fits the surrounding UI.

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

web/src/i18n/zh.ts

@@ -1047,7 +1047,7 @@ const zh = {
       enterHint: "双击进入目录",
       downloadHint: "单击下载文件",
       colName: "名称",
-      colSize: "大小 (KB)",
+      colSize: "大小",
       colMtime: "修改时间",
       colOwner: "所有者",
       colGroup: "组",