按建议，继续完成后续工作

结论：probe_semantics 已纳入 native LinuxCNC rs274 side-by-side fixture baseline，验证文档已同步，完整 native probes 验证通过。

wasm-port/docs/drift-report.md

@@ -67,13 +67,13 @@ semantic rewrites:
   source.
 - Fixture expectations are checked against the standalone vendored source
   path. The upstream `rs274` side-by-side baseline now covers simple motion,
-  offsets, feed-control, comment/logging, numbered-parameter, spindle-orient,
-  file-open reset, file-finish, tool-reload, and O-word subroutine fixtures;
-  it also covers threading/rigid tap, NURBS dispatch boundaries, and comparable
-  canonical runtime edge and program-end cleanup calls. Adapter-heavy fixtures,
-  standalone modal-state assertions, and upstream `rs274` output gaps such as
-  `WAIT` or hidden NURBS control-point detail still need dedicated native
-  LinuxCNC baselines.
+  offsets, feed-control, comment/logging, numbered-parameter, probing,
+  spindle-orient, file-open reset, file-finish, tool-reload, and O-word
+  subroutine fixtures; it also covers threading/rigid tap, NURBS dispatch
+  boundaries, and comparable canonical runtime edge and program-end cleanup
+  calls. Adapter-heavy fixtures, standalone modal-state assertions, and
+  upstream `rs274` output gaps such as `WAIT` or hidden NURBS control-point
+  detail still need dedicated native LinuxCNC baselines.
 
 ## Current Drift Conclusion