参考所有分组，完成尽量多的内容：结论为 porting 文档守住 LinuxCNC fixture 覆盖

test-all-native.sh

@@ -809,6 +809,14 @@ for label, script in [
             f"{label} regression script no longer covers LinuxCNC fixtures: "
             + ", ".join(missing)
         )
+
+porting_doc = Path("docs/linuxcnc-porting.md").read_text(encoding="utf-8")
+missing_doc = [f"tests/gcode/{fixture}.ngc" for fixture in fixtures if f"tests/gcode/{fixture}.ngc" not in porting_doc]
+if missing_doc:
+    raise SystemExit(
+        "LinuxCNC fixture coverage is missing from docs/linuxcnc-porting.md: "
+        + ", ".join(missing_doc)
+    )
 PY
 
 for script in \