按推荐建议，继续执行

结论：已接入 LinuxCNC probe canonical 边界事件记录，并新增 G38.2、G38.3、G38.4、G38.5 回归 fixture；原生 probe 验证通过。

wasm-port/docs/porting-steps-standalone.md

@@ -389,6 +389,13 @@ Current verified progress:
   `G95`, `G61`, `G61.1`, and `G64 P/Q` behavior from
   `interp_convert.cc::convert_feed_mode()`,
   `interp_convert.cc::convert_control_mode()`, and `interp_queue.cc`.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  probe canonical boundary calls emitted by vendored
+  `interp_convert.cc::convert_probe()`: `TURN_PROBE_ON`,
+  `STRAIGHT_PROBE`, and `TURN_PROBE_OFF`.
+  `tests/fixtures/gcode/probe_semantics.ngc` and
+  `tests/fixtures/canon/probe_semantics.events` pin `G38.2`, `G38.3`,
+  `G38.4`, and `G38.5` probe type handling.
 - `tests/fixtures/gcode_errors/g1_zero_feed.ngc` and
   `tests/fixtures/canon_errors/g1_zero_feed.expected` pin the negative
   `G1` zero-feed case. The source basis is LinuxCNC