Add workflow

.github/workflows/build.yaml

@@ -0,0 +1,29 @@
+name: Check Next.js Build
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    name: Build Next.js App
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22' # or match the version in .nvmrc or package.json
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Build the app
+        run: npm run build