{"message":"Shared Sites API","endpoints":{"POST /sites":"Create permanent site (authenticated)","POST /sites/temp":"Create temporary site (rate-limited)","PUT /sites/:id":"Update site (owner only)","DELETE /sites/:id":"Delete site (owner only)","POST /sites/:id/upload-urls":"Get presigned upload URLs","GET /t/:id":"Serve temporary site","GET /:id":"Serve permanent site"}}