feat: added ci/cd pipeline

.github/workflows/ci-cd.yml

@@ -0,0 +1,112 @@
+name: CI/CD Pipeline
+
+on:
+  push:
+    branches: [main]
+  pull_request: 
+    branches: [main]
+  workflow_dispatch: 
+    inputs:
+        reason:
+            description: "Reason for manual trigger"
+            required: false
+            default: "Test run"
+            type: string    
+  schedule:
+    - cron: "0 0 * * 0" # weekly on Sundays at midnight   
+
+permissions: 
+    contents: read
+    pages: write
+    id-token: write
+
+concurrency: 
+    group: "pages"
+    cancel-in-progress: false  
+
+jobs:
+  ci:
+    name: Continuous Integration
+    runs-on: ubuntu-latest  
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v6
+
+      - name: Setup Node.js   
+        uses: actions/setup-node@v6
+        with:
+            node-version: "24"
+            cache: "npm"
+
+      - name: Install dependencies
+        run: npm ci      
+
+      - name: Run linter
+        run: npm run lint
+
+      - name: Check formatting
+        run: npm run format::check  
+
+      - name: Run tests
+        run: npm test  
+
+      - name: Build project
+        run: npm run build  
+
+      - name: Generate simple log
+        run:
+          mkdir -p logs
+          echo "CI Pipelineran at ${date}">logs/pipeline.log
+          echo "Tests passed ">> logs/pipeline.log
+
+      - name: Generate demo HTML page
+        run:
+          mkdir -p public
+          <p demo/index.html public/
+          <p dist/sum.js public/  
+
+      - name: Upload build logs artifact
+        uses: actions/upload-artifact@v6
+        with:
+          name: build-logs
+          path: logs
+          retention-days: 30
+
+      - name: Upload demo site artifact
+        uses: actions/upload-artifact@v6
+        with:
+          name: demo-site
+          path: public
+          retention-days: 30  
+
+  deploy: 
+    name: Deploy to Github pages
+    needs: ci
+    runs-on: ubuntu-latest
+
+    # only deploy on push to main branch
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+
+    environment: 
+        name: github-pages
+        url: ${{ steps.deployment.outputs.page_url}}
+
+    steps:
+      - name: Download artifact
+        uses: actions/download-artifact@v7
+        with:
+          name: demo-site
+          path: ./public
+
+      - name: Upload to Github Pages
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./public
+
+      - name: Deploy to Github Pages
+        id: deployment
+        uses: actions/deploy-pages@v4
+
+
+