按源标记Python绑定编译覆盖

结论：依据 LinuxCNC RS274 Python/Boost.Python 绑定源 canonmodule.cc、gcodemodule.cc、interpmodule.cc 与 py*.cc，blocker 分析新增 python-compile-covered 分组，锁定这些 blocker 已由 inert Python C API symbol probe 编译覆盖；Python/remap 执行仍保持禁用，未扩展 smoke。

检查：./test-linuxcnc-wasm-python-c-api-symbols.sh；./test-linuxcnc-wasm-blockers.sh linuxcnc-rs274-wasm-source-files.txt；CNC_SIM_WASM_BLOCKERS_SELF_CHECKS=1 ./test-linuxcnc-wasm-blockers.sh linuxcnc-rs274-wasm-source-files.txt；./check-linuxcnc-wasm-blockers-source-map.sh；./test-native.sh；./test-linuxcnc-source-link.sh。

check-linuxcnc-wasm-blockers-source-map.sh

@@ -84,6 +84,7 @@ expected_counts = {
     "manifest-core": "core=26",
     "manifest-blocked": "blocked=9",
     "python": 8,
+    "python-compile-covered": 8,
     "tooldata": 1,
     "native-backend": 1,
     "native-fs": 1,
@@ -111,6 +112,8 @@ if sections.get("dlopen") != ["(none)"]:
     raise SystemExit("blocked dlopen section is no longer empty")
 if sections.get("tooldata-users") != ["(none)"]:
     raise SystemExit("blocked tooldata-users section is no longer empty")
+if sections.get("python") != sections.get("python-compile-covered"):
+    raise SystemExit("blocked Python sources are no longer fully compile-covered by the inert Python C API probe")
 
 shim_paths = set(Path(line).as_posix() for line in subprocess.check_output(
     ["./list-linuxcnc-wasm-safe-shims.sh"],
@@ -166,6 +169,7 @@ for phrase in [
     'parameter-file replacement through `filename + ".new"`',
     "O-word lookup and parameter-file replacement",
     "Python/Boost.Python remap paths remain tracked blockers",
+    "Python/Boost.Python blockers are compile-covered by the inert Python C API probe",
     "./check-linuxcnc-wasm-blockers-source-map.sh",
     "does not interpret G-code",
 ]: