- New PurchaseOrder.paymentDate field (migration 20260531000002)
- Backfill: existing POs use paidAt, else the earliest payment action date
- Accounts must enter a payment date with the payment reference
- Date input pre-selected to today, max=today (no future dates)
- Validated server-side (required + not in future) in processPaymentSchema
- paymentDate stored on both full and partial payments; paidAt set from it
- Shown on PO detail (Payment Date) and payment history (prefers paymentDate)
- Integration tests updated; added future-date rejection test
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Hardik
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