CipherBox v2 — as-built spec corpus and rewrite blueprint (wayfinder map in Issues).
The wayfinding effort is complete (map, closed 2026-07-19). As of the v2 build kickoff, the blueprint/ corpus and CONTEXT.md glossary are maintained in FSM1/cipher-box (copied there by the freeze-handover PR); the copies here are the as-charted archive. The specs/ corpus (as-built v1) and the decision history in Issues remain canonical here.