🐛 Fix GitHub Actions workflow to use pnpm instead of npm

Update code-quality.yml to properly handle pnpm lockfile by installing pnpm before setup-node cache configuration.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

.github/workflows/code-quality.yml

@@ -20,17 +20,17 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          version: latest
+
       - name: Setup Node.js
         uses: actions/setup-node@v4
         with:
           node-version: "20"
           cache: "pnpm"
 
-      - name: Install pnpm
-        uses: pnpm/action-setup@v4
-        with:
-          version: latest
-
       - name: Install dependencies
         run: pnpm install --frozen-lockfile