- Revert ASAP fallback — SCHEDULED is always correct; server validates before Square
- validateAndContinue now catches a cleared delivery/pickup slot and redirects
back to the delivery step with an inline error message rather than letting
the order reach Square with a missing deliver_at
- PaymentForm onError prop: 400-level checkout errors call onError so CartDrawer
can navigate the user to the right step to fix the problem
- On any payment error, show an "email us your order details" mailto link that
pre-fills name, phone, items, fulfillment, and total so we can issue an invoice
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
chris
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