Migrate to Vite+ unified toolchain (#428)

scripts/vendor-node.cjs

@@ -105,7 +105,7 @@ rmSync(tmpDir, { recursive: true, force: true });
 function tryExecSync(cmd) {
   try {
     return execSync(cmd, { stdio: 'pipe' }).toString('utf-8');
-  } catch (_) {
+  } catch {
     return '';
   }
 }