add: gh action

Author: ping-maxwell

.github/workflows/build.yml

@@ -0,0 +1,45 @@
+name: Build on PR Merge
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch: # Allow manual triggering
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          
+      - name: Install dependencies
+        run: npm install
+        
+      - name: Install TypeScript
+        run: npm install -g typescript
+        
+      - name: Run build script
+        run: npm run build
+        
+      - name: Verify build output
+        run: |
+          if [ ! -f "dist/index.js" ]; then
+            echo "Build failed - dist/index.js not found"
+            exit 1
+          fi
+          echo "Build successful - dist/index.js created"
+          
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: dist
+          path: dist/
+          retention-days: 30