giles f71af498cf commerce: stacking precedence + best-price selection + backward query (16 tests) — Phase 2 done ...

stack.sx — precedence as a separate selection layer, not in the rules.
Exclusivity = unordered code pairs; valid-stackings enumerates every legal
subset of applicable promos; best-stacking deterministically picks max total
discount (stable on ties); stacking-by-totalo answers "which legal stacking
yields total D?" backward. Member vs guest falls out of applicable-promos.
Completes Phase 2. Total 99/99 across 6 suites.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

2026-06-07 00:21:48 +00:00

..

api.sx

commerce: public session API + per-line audit + checkout stub (12 tests) — Phase 1 done

2026-06-06 23:46:51 +00:00

cart.sx

commerce: cart line items + add/remove/set-qty + relational view (18 tests)

2026-06-06 23:42:49 +00:00

catalog.sx

commerce: catalog facts + multidirectional relations + conformance harness (16 tests)

2026-06-06 23:41:04 +00:00

price.sx

commerce: deterministic subtotal + jurisdiction-relational tax (20 tests)

2026-06-06 23:45:05 +00:00

promo.sx

commerce: promo rules (percent/fixed/bundle/member) as relations (17 tests)

2026-06-07 00:17:26 +00:00

stack.sx

commerce: stacking precedence + best-price selection + backward query (16 tests) — Phase 2 done

2026-06-07 00:21:48 +00:00