ci: rename main.yml to ci.yml, fix artifact actions to @v4

Author: dacrab

.github/workflows/ci.yml

@@ -0,0 +1,50 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+jobs:
+  ci:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v6
+      - uses: ./.github/actions/setup-bun
+      - run: bun run ci
+      - uses: actions/upload-artifact@v4
+        if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+        with:
+          name: dist
+          path: dist
+          retention-days: 1
+
+  deploy:
+    needs: ci
+    if: github.ref == 'refs/heads/main' && github.event_name == 'push'
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: dist
+          path: dist
+      - uses: actions/upload-pages-artifact@v4
+        with:
+          path: dist
+      - uses: actions/deploy-pages@v4
+        id: deployment