feat: add github workflow for frontend

.github/workflows/frontend.yaml

@@ -0,0 +1,50 @@
+name: Frontend Workflow
+
+on:
+  pull_request:
+    types: [synchronize, opened, reopened]
+    paths:
+      - "frontend/**"
+
+defaults:
+  run:
+    working-directory: frontend
+
+jobs:
+  build-frontend:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Build Vite React app
+        run: npm run build
+
+  lint-frontend:
+    runs-on: ubuntu-latest
+    needs: build-frontend
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: Run ESLint
+        run: npm run lint
+
+      - name: Run Prettier Check
+        run: npm run prettier:check

frontend/eslint.config.js

@@ -5,7 +5,7 @@ import reactRefresh from 'eslint-plugin-react-refresh';
 import prettier from 'eslint-config-prettier';
 
 export default [
-  { ignores: ['dist'] },
+  { ignores: ['dist', 'node_modules'] },
   {
     files: ['**/*.{js,jsx}'],
     languageOptions: {