The readme served two roles: design-decision source of truth and
work-status tracker. The status section grew into a plan the
orchestrator must navigate, so it moves to its own file with task
IDs, dependency edges, statuses, and per-item acceptance criteria.
readme.md remains authoritative for decisions (stack, formats,
workflow); workflow step 7 and AGENTS.md pointers now name
roadmap.md for status. Cross-references verified.
Also records: stale feature/epsilon-parser branch pointer (676e55e,
2 behind main) deleted locally; recreate from main when B1 starts.