# @platform-modules/commerce-checkout

L3 checkout orchestrator — cart validation, three-phase charge workflow, settlement dispatch.

**Boundary spec:** `docs/specs/2026-06-19-commerce-checkout-boundaries.md`  
**Build plan:** `docs/plans/2026-06-20-commerce-checkout-build-plan.md`  
**Conventions:** `docs/specs/2026-06-19-commerce-conventions.md` (C1–C10)

**Deps:** L2 commerce siblings + `billing` + `tax` + `db` as direct regular-dep imports. No ledger, inventory, promotions, or auth in the digital slice. Webhook HTTP + M5 dedup live in `billing`; checkout exports `makeSettlementDispatch` only (Wave B).

**Tests:** Wave A = pure unit tests; Wave B/C = embedded-postgres `singleFork` integration.