Record the two-pass build process: functional Kotlin first (M0-M4), then a Claude Design pass producing the front-end design that Claude Code implements as the final UI (new M5). Add §2.1 documenting the workflow and reconcile §9 milestones (insert M5 design pass, renumber Polish/Push/Play to M6-M8) plus the milestone cross-references in §8, §11, §12, and §13.
Co-Authored-By: Claude <noreply@anthropic.com>
