继续按提示词推进：补tooldata mmap单创建者覆盖

docs/linuxcnc-tooldata-source-map.md

@@ -58,6 +58,9 @@ source-link/shim guard only; it must not add CNC behavior and must not expand th
 - The mmap backend must keep the LinuxCNC random-toolchanger flag and
   `last_index` initialization edges from `tool_mmap_creator()`, and
   `tooldata_last_index_get()` must preserve the last-index unavailable return.
+- The mmap backend must keep LinuxCNC's single-creator process boundary from
+  the `static inited` guard in `tool_mmap_creator()`, including after
+  `tool_mmap_close()` clears browser-safe in-memory state.
 - `tool_mmap_user()` must keep LinuxCNC's unavailable mmap failure boundary,
   and `tool_mmap_close()` must clear the browser-safe in-memory state without
   adding filesystem mmap behavior.