尽快推进：收紧WASM blocker参数文件源码锚点

docs/linuxcnc-wasm-blockers-source-map.md

@@ -18,6 +18,7 @@ a source-link/build guard only; it does not add CNC behavior and must not become
   replaced by the wasm-safe tooldata mmap backend shim.
 - `src/emc/rs274ngc/interp_o_word.cc` uses native directory traversal for
   O-word subroutine lookup; browser persistence remains OPFS-only.
+- `src/emc/rs274ngc/rs274ngc_pre.cc` implements LinuxCNC parameter-file replacement through `filename + ".new"`, `filename + ".bak"`, `unlink`, `link`, and `rename`; browser persistence remains OPFS-only.
 
 ## Manifest Coverage
 
@@ -44,7 +45,7 @@ a source-link/build guard only; it does not add CNC behavior and must not become
 | `core-dlopen-shimmed` | 1 | Core LinuxCNC `dlopen` user compiled with dlfcn shim. |
 | `core-tooldata-shimmed` | 1 | Core LinuxCNC tooldata source compiled with wasm tooldata shims. |
 | `core-tooldata-users-shimmed` | 2 | Core RS274/NML users of tooldata declarations. |
-| `core-native-fs-shimmed` | 16 | Core sources with native filesystem includes or calls covered by WASM shims. |
+| `core-native-fs-shimmed` | 16 | Core sources with native filesystem includes or calls covered by WASM shims, including O-word lookup and parameter-file replacement. |
 
 Required replacement set: