按推荐建议，继续执行

结论：已接入 LinuxCNC NURBS G5 canonical 边界事件记录，并新增 G5.2、G5.3 回归 fixture；原生 probe 验证通过。

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

@@ -403,6 +403,12 @@ Current verified progress:
   `tests/fixtures/gcode/threading_sync.ngc` and
   `tests/fixtures/canon/threading_sync.events` pin `G33` spindle-synchronized
   straight feed and `G33.1` rigid tap behavior.
+- `runtime/core/linuxcnc_wrap/linuxcnc_interp_minimal_runtime.cpp` now records
+  NURBS G5 canonical boundary calls emitted by vendored
+  `interp_convert.cc::convert_nurbs()`: `NURBS_G5_FEED`.
+  `tests/fixtures/gcode/nurbs_g5_semantics.ngc` and
+  `tests/fixtures/canon/nurbs_g5_semantics.events` pin `G5.2` control-point
+  collection and `G5.3` NURBS feed emission.
 - `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