参考所有分组，完成尽量多的内容：收紧构建入口 source-map 守卫

结论：未扩展 smoke 功能行为，仅把 build-policy guard 扩展为同时校验 test-native.sh、test-linuxcnc-source-link.sh、build-wasm.sh 运行同一组 source-map guards。

LinuxCNC 来源依据：src/emc/rs274ngc/Submakefile、src/emc/tooldata/Submakefile、src/emc/ini/Submakefile、src/emc/pythonplugin/Submakefile、src/emc/kinematics/Submakefile 与 kinematics.h 的构建/源码链接边界。

检查通过：./check-linuxcnc-build-source-map.sh；./check-linuxcnc-workstreams-source-map.sh；./test-native.sh；./test-linuxcnc-source-link.sh。

docs/linuxcnc-build-source-map.md

@@ -41,8 +41,9 @@ behavior and must not expand the temporary smoke parser.
   `CONFIGURE_RULE_VERSION` fields instead of hashing whole scripts.
 - `build-wasm.sh` must configure with `CNC_SIM_ENABLE_SMOKE_BACKEND=OFF` and
   `CNC_SIM_ENABLE_LINUXCNC_WASM_SAFE_PROBE=ON`.
-- `build-wasm.sh` must run the same source-map guards as native and source-link
-  entry points before consuming generated config aliases or browser artifacts.
+- `test-native.sh`, `test-linuxcnc-source-link.sh`, and `build-wasm.sh` must
+  run the same source-map guards before consuming generated config aliases,
+  source-linked LinuxCNC objects, or browser artifacts.
 - `build-wasm.sh` must build `cnc_sim_wasm_runtime_probe` before
   `cnc_sim_wasm`, copy `cnc_sim.js` and `cnc_sim.wasm` exactly once, compare
   copied artifacts with `cmp -s`, and run Node smoke before browser smoke.