Remove fabricated PLAN-*/EXECUTIVE-*/TODO/TICKET/spec docs; add authoritative
ROADMAP, ADR-0001 (engine-first gRPC), and Phase 0/1 BACKLOG; rewrite README,
CLAUDE.md, ARCHITECTURE, and wiki Home to honest reality; add status banners to
the NSQL and self-healing specs; make wiki-sync mirror-with-delete.
