按建议继续完成后续工作

结论：upstream rs274 side-by-side 基线已继续扩展到 file-open reset 和 O-word subroutine fixture；完整 native 验证已通过。

wasm-port/docs/compatibility-validation.md

@@ -110,9 +110,10 @@ machine-session validation remain future work.
 The current fixture expectations validate standalone behavior against both the
 vendored LinuxCNC source path and an upstream `rs274` side-by-side baseline for
 parser/conversion, offsets, feed-control, comment/logging, numbered-parameter,
-spindle-orient, file-finish, and tool-reload fixtures. Fixtures that depend on
-standalone-only runtime adapters, HAL/INI/tool table setup, or richer machine
-session state still need dedicated native LinuxCNC baselines.
+spindle-orient, file-open reset, file-finish, tool-reload, and O-word
+subroutine fixtures. Fixtures that depend on standalone-only runtime adapters,
+HAL/INI/tool table setup, or richer machine session state still need dedicated
+native LinuxCNC baselines.
 
 The kinematics probes currently cover LinuxCNC identity/trivial kinematics,
 the switchable `5axiskins` XYZBCW bridge-mill model, and the TRT `xyzac`/`xyzbc`

wasm-port/docs/drift-report.md

@@ -68,8 +68,8 @@ semantic rewrites:
 - 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-finish, and tool-reload fixtures; adapter-heavy fixtures still need
-  dedicated native LinuxCNC baselines.
+  file-open reset, file-finish, tool-reload, and O-word subroutine fixtures;
+  adapter-heavy fixtures still need dedicated native LinuxCNC baselines.
 
 ## Current Drift Conclusion
 

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

@@ -506,7 +506,8 @@ Current verified progress:
   side-by-side baseline against upstream `../linuxcnc/bin/rs274`. It normalizes
   native LinuxCNC canonical output for simple motion, offsets, feed-control,
   comment/logging, numbered-parameter, spindle-orient, file-finish, and
-  tool-reload fixtures, filters native output to the event classes each
+  tool-reload fixtures. It now also includes file-open reset and O-word
+  subroutine fixture coverage, filters native output to the event classes each
   standalone fixture explicitly expects, and compares the result without
   introducing a project-authored CNC semantics oracle.
 - `tests/fixtures/gcode_errors/g1_zero_feed.ngc` and