ci: add deploy and lint GitHub Actions workflows

Author: modori1208

.github/workflows/deploy.yml

@@ -0,0 +1,19 @@
+name: Deploy CodeFestival Web
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Execute rebuild script
+        uses: appleboy/ssh-action@3ca8a7c5359ac6ad91aa47f1946ece1c3b025004
+        with:
+          host: ${{ secrets.SERVER_IP }}
+          port: ${{ secrets.SERVER_PORT }}
+          username: ${{ secrets.SERVER_USERNAME }}
+          key: ${{ secrets.SSH_PRIVATE_KEY }}
+          script: /usr/local/bin/deploy/pnpm.sh

.github/workflows/lint.yml

@@ -0,0 +1,29 @@
+name: Code Style Validation
+
+on:
+  push:
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v6
+        with:
+          node-version: 24
+
+      - name: Install pnpm
+        run: npm install -g pnpm
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Run ESLint
+        run: pnpm run lint