Add helper scripts for Cloudflare Pages and R2 deployment:
- cloudflare-setup.sh: Creates Pages project, deploys dist, creates R2 bucket
- verify-deployment.sh: End-to-end verification of all endpoints
These scripts require wrangler authentication via `wrangler login`.
Note: worker-api deployment removed from scope (legacy code was removed
in commit b06350d).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>