2026-07-10 — The practice/MVP/tool trichotomy lands as an amendment to the

2026-07-10 — The practice/MVP/tool trichotomy lands as an amendment to the principles README promotion path (one canonical three-rung ladder: principle -> enabling convention/script/format -> discipline-kind intent or core absorption), never as a third doctrine file — the adversarial review found standalone adoption would duplicate and contradict existing doctrine. Intake rules kept verbatim: articulate the full ladder for every candidate; never fabricate an absent rung (research/notes/2026-07-09).