Initial commit: CF Multisite 멀티테넌트 정적 호스팅

- Cloudflare Workers + R2 기반
- Edge 캐싱으로 비용 절감
- 티어별 Rate Limiting (free/basic/pro)
- KV 기반 사용량 추적
- Admin API (usage, customers, tiers, stats)
- Gitea Actions 배포 워크플로우

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/workflows/deploy.yml

@@ -0,0 +1,62 @@
+# Gitea Actions 워크플로우 예시
+# 고객 저장소에서 사용할 템플릿
+
+name: Deploy to CF Multisite
+
+on:
+  push:
+    branches: [main]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      # Hugo 사이트인 경우 (선택사항)
+      # - name: Setup Hugo
+      #   run: |
+      #     wget -qO- https://github.com/gohugoio/hugo/releases/download/v0.139.0/hugo_extended_0.139.0_linux-amd64.tar.gz | tar xz
+      #     sudo mv hugo /usr/local/bin/
+
+      # - name: Build Hugo
+      #   run: hugo --minify
+
+      - name: Install AWS CLI
+        run: |
+          curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
+          unzip -q awscliv2.zip
+          sudo ./aws/install
+
+      - name: Upload to R2
+        env:
+          AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY }}
+          AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_KEY }}
+          R2_ENDPOINT: ${{ secrets.R2_ENDPOINT }}
+          R2_BUCKET: multisite-bucket
+          # 저장소 이름을 고객 ID로 사용 (또는 별도 설정)
+          CUSTOMER_ID: ${{ github.repository_owner }}
+        run: |
+          # 정적 파일 디렉토리 (Hugo: public, 일반: . 또는 dist)
+          SOURCE_DIR="."
+
+          # Hugo 빌드 결과가 있으면 그것 사용
+          if [ -d "public" ]; then
+            SOURCE_DIR="public"
+          fi
+
+          aws s3 sync "$SOURCE_DIR" "s3://${R2_BUCKET}/sites/${CUSTOMER_ID}/" \
+            --endpoint-url "$R2_ENDPOINT" \
+            --exclude ".git/*" \
+            --exclude ".gitea/*" \
+            --exclude "*.md" \
+            --exclude "README*" \
+            --delete
+
+          echo "Deployed to: https://${CUSTOMER_ID}.yoursite.com"