Adds docs/README.md (index), api-conventions.md, spa-conventions.md, e2e-local.md + scripts/e2e-local.sh, blazor-route-parity.md (#91 phase-b tracker), domain-model.md, decisions.md. Rule (CLAUDE.md): read these at session start instead of re-recon; update in the same PR that changes a convention/route/decision. Part 2 = #185. Handoff: #180/#141/#158/#161 closed (PRs #181/#182/#183); #145 playback-only; #91 readiness plan posted; next prompt = #185 + quick wins + #155/#151/#152/#153. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
