Headless windows installer (#5664)

frontend/scripts/build-provisioner.mjs

@@ -0,0 +1,28 @@
+import { execFileSync } from 'node:child_process';
+import { existsSync, mkdirSync, copyFileSync } from 'node:fs';
+import { join, resolve } from 'node:path';
+
+if (process.platform !== 'win32') {
+  process.exit(0);
+}
+
+const frontendDir = process.cwd();
+const tauriDir = resolve(frontendDir, 'src-tauri');
+const provisionerManifest = join(tauriDir, 'provisioner', 'Cargo.toml');
+
+execFileSync(
+  'cargo',
+  ['build', '--release', '--manifest-path', provisionerManifest],
+  { stdio: 'inherit' }
+);
+
+const provisionerExe = join(tauriDir, 'provisioner', 'target', 'release', 'stirling-provisioner.exe');
+if (!existsSync(provisionerExe)) {
+  throw new Error(`Provisioner binary not found at ${provisionerExe}`);
+}
+
+const wixDir = join(tauriDir, 'windows', 'wix');
+mkdirSync(wixDir, { recursive: true });
+
+const destExe = join(wixDir, 'stirling-provision.exe');
+copyFileSync(provisionerExe, destExe);