Use stable Windows path contract assertions

internal/exec-plans/release-v1.125.0-plan.md

@@ -54,3 +54,10 @@
 - 本地验证：MCP `8/8`、Windows workflow contract `16/16`、`npm run typecheck`、`npm run test:contracts`、`npm run governance:electron-release-workflow`、app-server-client 定向 `100/100`、`npm run verify:gui-smoke` 均通过；GUI evidence `standalone-shell-01-20260809135003-43144`。
 - `npm run test:related -- packages/app-server-client/src/agent-runtime.ts`：入口在 Electron 目录解析时触发既有 `EISDIR`，未作为通过证据；改用直接 app-server-client 测试文件运行并通过。
 - 真实 Windows runner：待提交并推送修复后复核。
+
+## Windows runner 复核
+
+- 修复提交 `b696976f3` 已推送到 `main`，但 runner `31317378340` 在编译 `lime-mcp` 测试时失败。
+- 失败原因：Windows `std::os::windows::fs::MetadataExt::volume_serial_number` 与 `file_index` 仍依赖未稳定的 `windows_by_handle`，不能用于当前稳定 Rust toolchain。
+- 修复方式：测试 helper 改用稳定标准库 `std::fs::canonicalize`，去除 extended-length 前缀后按 Windows 大小写不敏感比较；不引入生产依赖。
+- runner `31317378340` 已确认 checkout、依赖安装成功，但未进入 sherpa、Squirrel、Gate B；需追加提交并重新触发 Windows runner。

lime-rs/crates/mcp/src/agent_plugin_config.rs

@@ -490,21 +490,11 @@ fn host_path_string(path: &Path) -> String {
 fn assert_same_existing_host_path(actual: &str, expected: &Path) {
     #[cfg(windows)]
     {
-        use std::os::windows::fs::MetadataExt;
-
-        let actual_metadata = std::fs::metadata(actual).unwrap();
-        let expected_metadata = std::fs::metadata(expected).unwrap();
-        assert_eq!(
-            (
-                actual_metadata.volume_serial_number(),
-                actual_metadata.file_index(),
-            ),
-            (
-                expected_metadata.volume_serial_number(),
-                expected_metadata.file_index(),
-            ),
-            "paths refer to different Windows filesystem entries: actual={actual} expected={}",
-            expected.display()
+        let actual = host_path_string(&std::fs::canonicalize(actual).unwrap());
+        let expected = host_path_string(&std::fs::canonicalize(expected).unwrap());
+        assert!(
+            actual.eq_ignore_ascii_case(&expected),
+            "paths refer to different Windows filesystem entries: actual={actual} expected={expected}"
         );
     }
     #[cfg(not(windows))]