增强 Windows sccache wrapper 探测回退

使用限时真实 rustc wrapper 探测替代版本检查

探测失败或超时时回退到直接 rustc

同步更新 sccache 故障排障记录

scripts/dev.mjs

@@ -154,11 +154,12 @@ function resolveLocalDevRustcWrapperBypass(options = {}) {
   const sccacheAvailable =
     options.sccacheAvailable ??
     (() => {
-      const result = spawnSync('sccache', ['--version'], {
+      const result = spawnSync('sccache', ['rustc', '-vV'], {
         cwd: repoRoot,
         encoding: 'utf8',
         shell: true,
         windowsHide: true,
+        timeout: options.sccacheProbeTimeoutMs ?? 10_000,
       });
       return !result.error && result.status === 0;
     })();