fix: add separate build job to satisfy GitHub branch protection requirements

- Split build steps from test job into dedicated build job
- Add dependency (needs: test) to ensure tests pass before building
- Maintain matrix strategy for both Node.js 18.x and 20.x
- Keep CLI functionality testing in build job

This resolves the 'build' status check that was stuck on 'Expected  Waiting
for status to be reported' in GitHub PR requirements.

Author: beonde

.github/workflows/ci.yml

@@ -35,6 +35,27 @@ jobs:
 
     - name: Run tests
       run: npm test
+
+  build:
+    runs-on: ubuntu-latest
+    needs: test
+    
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x]
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+      
+    - name: Setup Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+        
+    - name: Install dependencies
+      run: npm ci
 
     - name: Build CLI
       run: npm run build