Add automated script for creating R2 bucket and configuring custom domain
r2.aicodebattle.com for replay storage.
- Create scripts/setup-r2.sh:
- Creates acb-data R2 bucket if it doesn't exist
- Configures custom domain via Cloudflare API
- Includes verification and usage instructions
- Update DEPLOYMENT.md to reference the new script
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
