ci(release): harden packaged app builds

scripts/before-tauri-build.js

@@ -0,0 +1,37 @@
+#!/usr/bin/env node
+import fs from 'node:fs';
+import path from 'node:path';
+import { spawnSync } from 'node:child_process';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const repoRoot = path.resolve(__dirname, '..');
+
+function run(command, args) {
+  const executable = process.platform === 'win32' && command === 'npm' ? 'npm.cmd' : command;
+  const result = spawnSync(executable, args, {
+    cwd: repoRoot,
+    stdio: 'inherit',
+  });
+
+  if (result.error) {
+    console.error(`Failed to run ${executable}: ${result.error.message}`);
+    process.exit(1);
+  }
+
+  if (result.status !== 0) {
+    process.exit(result.status ?? 1);
+  }
+}
+
+run(process.execPath, ['scripts/stage-engines.js']);
+run(process.execPath, ['scripts/verify-binaries.js', '--staged']);
+
+if (process.env.FIRELINK_OMIT_ENGINE_DIST_FOR_TAURI_BUNDLE === '1') {
+  const engineDist = path.join(repoRoot, 'src-tauri', 'engine-dist');
+  fs.rmSync(engineDist, { recursive: true, force: true });
+  fs.mkdirSync(engineDist, { recursive: true });
+  console.log('Omitted engine-dist from the initial Tauri bundle; release packaging will repack verified engines.');
+}
+
+run(process.platform === 'win32' ? 'npm.cmd' : 'npm', ['run', 'build']);