feat(native): add prebuilt Node-API flock support

native/system/scripts/verify-launcher-binary.mjs

@@ -7,8 +7,8 @@
  * `pnpm run build:native` would ship an EMPTY platform package — the
  * binary's absence surfacing only at runtime as a failed probe on every
  * consumer — and a binary copied across packages would advertise an
- * architecture it cannot execute. The check is presence + ELF `e_machine`
- * against the package's declared `cpu`. `verify-packed-install.mjs`
+ * architecture it cannot execute. Checks cover ELF/Mach-O format, architecture,
+ * declared payloads, and Node-API exports. `verify-packed-install.mjs`
  * separately pins the installed tarball bytes to the workspace build.
  *
  * Runs from each platform package's `prepack` hook (pnpm sets the script
@@ -23,7 +23,7 @@ const packageDir = process.argv[2] ? path.resolve(root, process.argv[2]) : proce
 
 try {
   const { name, count } = verifyPlatformBinaries(packageDir);
-  console.log(`verify-launcher-binary: ${name} — ${count} binaries present with the right ELF architecture.`);
+  console.log(`verify-launcher-binary: ${name} — ${count} binaries present with the right native format and architecture.`);
 } catch (error) {
   console.error(`verify-launcher-binary: ${error instanceof Error ? error.message : error}`);
   process.exit(1);