Six agent-targetable specs so a successor can build the game from the documents alone: schedules + aggregate-observer (B1 gaps/scale-debt, READY), zplanes + rollback (B2 structural spine, READY), overt-phase (B3, READY), chargen (B3, DRAFT). Later-stage specs written now so the load-bearing shapes (recursive Space, mind/ledger split, aggregate Observer) are decided before code is built against a shape that can't scale. tools/check.sh: the executable definition of done (fmt, tests, clippy both features, bevy build, spec-header hygiene). knowledge/design- judgment.md: the taste specs can't hold (pacing, tone, what to reject, the story test). Defense: the constitution rule states agents should build the game from these documents alone; the player contract and self-similar-scale clause require the structural decisions (mind/ledger split, aggregate interface, recursive Space) be made before they are built wrong. check.sh is the mechanical form of AGENT.md's definition of done. No game behavior changes; this is spec + process + one tool.