Architecture/why SSOT =
./CHARTER.md(HANDOFF.md absorbed 2026-05-22 →./HANDOFF.log.mdhistorical) · progress SSOT =./PLAN.log.md(PLAN.md absorbed 2026-05-22 — forward Roadmap into CHARTER.md, κ-phase log retained in PLAN.log.md archive). This file is the live spec — the chronological decision log (every gated D-number withpicked/rationale/anchors) lives in./DESIGN.log.md. D-numbers are referenced across CHARTER / GOAL / ARCH / RTSC / NUCLEAR / RFC files; the log is the SSOT for those numbers.
- One
### Decision N — <title>block appended at the tail ofDESIGN.log.md(never edited in place — gated, irreversible audit trail). - Each block carries:
**picked**(the chosen option),**rationale**(cited bullets · governance link), optional**anchors**(PR / commit / file pointers). No prose outside this shape — keep the audit terse and citation-grade. - Cross-link every new Decision to: prior superseded D-numbers (state explicitly), the RFC it lands on (
proposals/rfc_0NN_*.md), and the AGENTS.tape@F/g*clauses it engages. - Governance: no over-claim (
g3); decision text must be falsifiable (numbers cited or framed as scaffold) — not aspirational.
- Architecture / why →
./CHARTER.md(HANDOFF.md absorbed 2026-05-22 — historical at./HANDOFF.log.md) - Goal (one-sentence north-star + IS/NOT) →
./GOAL.md - Progress / measured distance / cockpit κ-phase log →
./PLAN.log.md(PLAN.md absorbed 2026-05-22 — Roadmap → CHARTER.md, κ-log retained in archive) - Domain spec heads (ABSORPTION / ARCH / MP / NUCLEAR / POOL / RTSC) → corresponding
<DOMAIN>.md - Enforced governance →
AGENTS.tape - RFC tree →
proposals/rfc_001..0NN_*.md
Historical decision blocks (D1 → D122 → …) are in ./DESIGN.log.md.