Audited the implementation against DS_Delivery_Date_Time_App_Study.docx and
closed the actionable gaps (see IMPLEMENTATION_REVIEW_2026-09-04.md).
Core (code + unit tests, 156 green):
- Wire excludeLocationsWithoutStock into resolveAvailabilityRequest; widget
now sends variantIds so inventory-based location exclusion actually runs.
- Live slot re-validation at checkout: new checkout-snapshot.server.ts writes
a shop-metafield capacity snapshot; validation-slot's evaluateCheckout
rejects a complete selection that has since filled / blacked out / closed /
hit the daily cap / left the schedule. Refreshed on order webhooks and
slot/blackout/location/enforcement edits.
- Scopable checkout enforcement: Shop.enforcementMode (all|tagged|off) +
enforcementTag, new app.settings.tsx admin page, honoured via the snapshot.
- Per-day order cap: Location.dailyOrderCap threaded through getAvailability
(dailyCap + consumedPerDate); admin field on the location screen.
- Product-rule slot blocking: ProductRule.blockedStartMins, unioned in
resolveProductRuleConstraints, enforced in the engine and resolveHoldRequest;
admin field on the product rules screen.
- Product-page placement: product-availability.liquid block + widget
data-mode="preview" (read-only earliest-date line).
- Second locale: datetime-widget fr.json / fr.schema.json.
- Migration 20260904120000_review_gaps (apply with prisma migrate deploy).
New Functions (source + unit tests; need `shopify app deploy` to ship):
- extensions/payment-customization: cart.payment-methods.transform.run — hides
cash-on-delivery / pay-in-store gateways on SHIPPING orders.
- extensions/checkout-datetime/src: restored from a gitignored dist-only state
— Plus native picker + Thank you / Order status confirmation blocks, all
calling the existing checkout.scheduling.* routes (one capacity pool).
tsconfig ships checkJs:false pending reconciliation with live checkout types.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
