add glibc rec

docs/javascript-architecture.md

@@ -238,7 +238,8 @@ flowchart LR
   AllowScripts --> Native[better-sqlite3 v12 Windows prebuilt]
   NpmCi --> Postinstall[scripts/verify-install.js]
   Postinstall --> SQLite[SQLite in-memory query]
-  Postinstall --> AMMC[AMMC/windows64 runtime check]
+  Postinstall --> AMMC[Platform AMMC runtime check]
+  AMMC --> Glibc[Linux x64 GLIBC >= 2.39 warning]
   SetupPs --> ServerCtl[scripts/serverctl.js]
 ```
 
@@ -247,6 +248,7 @@ Important constraints:
 - `better-sqlite3` is pinned to v12.11.x because its prebuilt Windows binary works with the supported Node.js releases; npm 12 is permitted to run only this dependency installer through `package.json#allowScripts`
 - `npm ci --ignore-scripts` is unsupported because it leaves the native SQLite binding uninstalled
 - AMMC Windows binaries and DLLs must remain together in `AMMC\\windows64`
+- the bundled Linux x86-64 AMMC requires GLIBC 2.39+; `verify-install.js` reports host compatibility and executable permission without blocking the RC RaceCore server
 - `npm start` is already a background start; batch wrappers must not create a second detached npm process
 - server process identity is stored in `data\\server.pid`
 - Windows stdout/stderr use `logs\\server.out.log` and `logs\\server.err.log`