Add CI workflow

Author: goffxnca

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: CI
+
+on:
+  push:
+    branches: ['**']
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint-format:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: 'yarn'
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Run ESLint
+        run: yarn lint
+
+      - name: Run Prettier check
+        run: yarn format

package.json

@@ -7,6 +7,7 @@
     "build": "next build",
     "start": "next start -p 3232",
     "lint": "next lint",
+    "lint:fix": "next lint --fix",
     "format": "prettier --check .",
     "format:fix": "prettier --write .",
     "analyze": "cross-env ANALYZE=true next build",