0079 — Haggling numerical model

Status

Folded into FEATURES/economy/haggling.md (2026-07-10) — the seven numbers + the band engine now live canonically in haggling.md § Numerical Haggling. (re-verified 2026-08-06)

Context

Arbitrated seven open haggling numbers / cross-doc contradictions (spanning haggling.md ↔ jsonb-schema.md) in one consolidating ADR: the counter formula, per-round band narrowing, the rank modifier, reputation-tier multiplier ranges, difficulty authority (archetype vs. int 1–10), the perceived-fair-price model, and session re-entry. Superseded haggling-numerical-v1 in DECISIONS.md.

Folded into FEATURES/economy/haggling.md — the counter formula, the 20%-per-round band narrowing, the rank/reputation modifiers, the difficulty 1–10 → ×0.85–×1.25 linear map, the acceptance-band-only rule, and the 5-minute non-reject re-entry cooldown now live in that doc's § Numerical Haggling. This record is retained for decision history per the append-only ADR policy.