fix: 恢复 trans 文件传输命令渲染

补回 ssh-runtime 对 shellArgv 的显式导入，修复远端文件下载校验时报未定义变量。

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

scripts/src/ssh-runtime.ts

@@ -30,6 +30,7 @@ import {
   parseSshInvocation,
   powerShellSingleQuote,
   safeProviderId,
+  shellArgv,
   shellQuote,
   sshRoutePayloadCwd,
   sshRouteSeparatorCompatibilityHint,