Cloudflare R2 was never the intended storage layer — plan.md correctly
specifies Backblaze B2 via Cloudflare Bandwidth Alliance. Remove the
Cloudflare R2 Setup section from the phase6 checklist, replace all
r2.aicodebattle.com URLs with b2.aicodebattle.com, fix the data flow
diagram to show K8s cluster as write-only compute (battles + replay
building) with no inbound user traffic, and update spa-route-test-results
to reference /b2/ paths consistently.
Add test_routes.sh to verify all SPA routes on ai-code-battle.pages.dev
return valid HTML. All 36 static/redirect/parameterized routes pass.
The /r2/ data paths return 404 (data not yet deployed to R2).
Test method: curl (ADB not available on this system). For full
device testing, see related bead bf-cmh1.
Closes: bf-2qp0
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>