Old open.md was dated 2026-04-13 and predated Planning Sessions, Prime
Claude, Self-Update, External MCP, editable status/tags, BlockedBy
chains, and the worker state consolidation. New version audits each
plan/improvement-plan item against the source tree, marks DONE/PARTIAL/
OPEN with file evidence, adds falsifiable pass-criteria to the
verification matrix, and lists the slices that shipped between
2026-04-13 and 2026-04-30 in a dedicated §0.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>