ci: add deploy action

.github/renovate.json5

@@ -0,0 +1,4 @@
+// https://docs.renovatebot.com/configuration-options/
+{
+  extends: ["github>SigureMo/renovate-config"],
+}

.github/workflows/vitepress-deploy.yml

@@ -0,0 +1,47 @@
+name: VitePress Deploy
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+  merge_group:
+  workflow_dispatch:
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          submodules: true
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v2
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: '20'
+          cache: 'pnpm'
+
+      - name: Install dependencies
+        run: pnpm i --frozen-lockfile
+
+      - name: Build VitePress site
+        run: pnpm build
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        if: github.ref == 'refs/heads/main'
+        with:
+          personal_token: ${{ secrets.PERSONAL_TOKEN }}
+          publish_dir: src/.vitepress/dist
+          external_repository: PFCCLab/PFCCLab.github.io
+          publish_branch: main
+          force_orphan: true
+          commit_message: ':rocket: deploy: '
+          user_name: 'github-actions[bot]'
+          user_email: 'github-actions[bot]@users.noreply.github.com'