The aicodebattle.com domain was never registered. Replace all hardcoded
https://r2.aicodebattle.com references with the /r2/ relative path, served
by a Cloudflare Pages Function that reads from the acb-data R2 bucket via
binding. Adds web/functions/r2/[[path]].ts and web/wrangler.toml.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
