add gh action

.github/workflows/build.yml

@@ -0,0 +1,35 @@
+name: Build Documentation
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+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: "yarn"
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Build documentation
+        run: yarn docs:build
+
+      - name: Check for build errors
+        if: failure()
+        run: |
+          echo "❌ Documentation build failed!"
+          exit 1