refactor(sdk,vscode): extract CLI bundling to dedicated script

- Move CLI bundling logic from build.js to bundle-cli.js in SDK package
- Add bundle:cli script to SDK package.json lifecycle hooks
- Remove redundant Build and Bundle step from workflow (prepackage handles it)
- Add repo build step to prepackage.js to ensure workspace artifacts exist
- Fix Windows workspace symlink issue by running npm install from tmpdir
- Remove lint/typecheck from prepackage (handled elsewhere in CI)

packages/sdk-typescript/scripts/build.js

@@ -91,35 +91,3 @@ if (existsSync(licenseSource)) {
     console.warn('Could not copy LICENSE:', error.message);
   }
 }
-
-console.log('Bundling CLI into SDK package...');
-const repoRoot = join(rootDir, '..', '..');
-const rootDistDir = join(repoRoot, 'dist');
-
-if (!existsSync(rootDistDir) || !existsSync(join(rootDistDir, 'cli.js'))) {
-  console.log('Building CLI bundle...');
-  try {
-    execSync('npm run bundle', { stdio: 'inherit', cwd: repoRoot });
-  } catch (error) {
-    console.error('Failed to build CLI bundle:', error.message);
-    throw error;
-  }
-}
-
-const cliDistDir = join(rootDir, 'dist', 'cli');
-mkdirSync(cliDistDir, { recursive: true });
-
-console.log('Copying CLI bundle...');
-cpSync(join(rootDistDir, 'cli.js'), join(cliDistDir, 'cli.js'));
-
-const vendorSource = join(rootDistDir, 'vendor');
-if (existsSync(vendorSource)) {
-  cpSync(vendorSource, join(cliDistDir, 'vendor'), { recursive: true });
-}
-
-const localesSource = join(rootDistDir, 'locales');
-if (existsSync(localesSource)) {
-  cpSync(localesSource, join(cliDistDir, 'locales'), { recursive: true });
-}
-
-console.log('CLI bundle copied successfully to SDK package');

packages/sdk-typescript/scripts/bundle-cli.js

@@ -0,0 +1,83 @@
+/**
+ * @license
+ * Copyright 2025 Qwen Team
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/**
+ * Bundles/copies the Qwen Code CLI into the SDK package dist/ so consumers
+ * don't need a separate CLI install.
+ *
+ * This is intentionally NOT part of the SDK "build" step; it is a packaging
+ * concern (run via npm lifecycle hooks like prepack/prepublishOnly).
+ */
+
+import { spawnSync } from 'node:child_process';
+import { cpSync, existsSync, mkdirSync, rmSync } from 'node:fs';
+import { dirname, join } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = dirname(__filename);
+const sdkRoot = join(__dirname, '..');
+const repoRoot = join(sdkRoot, '..', '..');
+
+function run(cmd, args, opts = {}) {
+  const res = spawnSync(cmd, args, {
+    stdio: 'inherit',
+    shell: process.platform === 'win32',
+    ...opts,
+  });
+  if (res.error) throw res.error;
+  if (typeof res.status === 'number' && res.status !== 0) {
+    throw new Error(
+      `Command failed (${res.status}): ${cmd} ${args.map((a) => JSON.stringify(a)).join(' ')}`,
+    );
+  }
+}
+
+function ensureRootBundle() {
+  const rootDistDir = join(repoRoot, 'dist');
+  const rootCliJs = join(rootDistDir, 'cli.js');
+  if (existsSync(rootCliJs)) return;
+
+  console.log(
+    '[sdk prepack] Root CLI bundle missing; running `npm run bundle`',
+  );
+  const npm = process.platform === 'win32' ? 'npm.cmd' : 'npm';
+  run(npm, ['run', 'bundle'], { cwd: repoRoot });
+}
+
+function main() {
+  ensureRootBundle();
+
+  const rootDistDir = join(repoRoot, 'dist');
+  const rootCliJs = join(rootDistDir, 'cli.js');
+  const cliDistDir = join(sdkRoot, 'dist', 'cli');
+
+  if (!existsSync(join(sdkRoot, 'dist'))) {
+    throw new Error(
+      '[sdk prepack] SDK dist/ not found. Run `npm run build` in packages/sdk-typescript first.',
+    );
+  }
+
+  rmSync(cliDistDir, { recursive: true, force: true });
+  mkdirSync(cliDistDir, { recursive: true });
+
+  console.log('[sdk prepack] Copying CLI bundle into SDK dist/...');
+  cpSync(rootCliJs, join(cliDistDir, 'cli.js'));
+
+  const vendorSource = join(rootDistDir, 'vendor');
+  if (existsSync(vendorSource)) {
+    cpSync(vendorSource, join(cliDistDir, 'vendor'), { recursive: true });
+  }
+
+  const localesSource = join(rootDistDir, 'locales');
+  if (existsSync(localesSource)) {
+    cpSync(localesSource, join(cliDistDir, 'locales'), { recursive: true });
+  }
+
+  console.log('[sdk prepack] CLI bundle copied successfully');
+}
+
+main();