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>

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "cf-multisite",
+  "version": "1.0.0",
+  "description": "Multi-tenant static site hosting with Cloudflare Workers + R2",
+  "private": true,
+  "scripts": {
+    "dev": "wrangler dev",
+    "deploy": "wrangler deploy",
+    "r2:create": "wrangler r2 bucket create multisite-bucket",
+    "r2:list": "wrangler r2 bucket list",
+    "upload": "node scripts/upload.js"
+  },
+  "devDependencies": {
+    "wrangler": "^3.99.0"
+  },
+  "dependencies": {
+    "@aws-sdk/client-s3": "^3.700.0"
+  }
+}