按建议，继续完成后续工作

结论：已新增 Chromium headless 浏览器 smoke，验证 INI WASM SDK 可在真实浏览器运行并完成 OPFS 文本文件往返，继续保持 OPFS 在 host-side、LinuxCNC INI 解析来自 vendored inifile.cc。

wasm-port/docs/drift-report.md

@@ -56,12 +56,12 @@ semantic rewrites:
 
 ## Known Gaps
 
-- No browser/full-core WASM parity tests yet. The INI parser now has a Node
-  WASM smoke harness against vendored LinuxCNC `inifile.cc`.
+- No browser/full-core WASM parity tests yet. The INI parser now has Node and
+  Chromium smoke harnesses against vendored LinuxCNC `inifile.cc`.
 - JS SDK validation is currently limited to the INI WASM wrapper around
   vendored LinuxCNC `inifile.cc`.
-- OPFS validation is currently limited to a Node mock of the browser
-  file-service adapter; browser-level OPFS validation is not yet established.
+- OPFS validation covers a Node mock of the file-service adapter and a
+  Chromium localhost round trip for INI text-file persistence.
 - Identity/trivial, `5axiskins`, TRT `xyzac`/`xyzbc`, delta, SCARA, PUMA,
   serial, hexapod, pentapod, and related kinematics sources now have native
   source-probe coverage.