submitCash.cfm: Calculate platform fee from subtotal * PayfritFee,
store in Orders.PlatformFee and Payments.PaymentPayfritsCut on submission.
complete.cfm: Replace bogus 2.25% cash transaction fee with the real
platform fee (customer fee + business fee = 2 × PayfritFee × subtotal).
Credit full Payfrit revenue to User 0. Record business fee in
PaymentPayfritNetworkFees.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
PaymentFromCreditCard column is NOT NULL with no default value,
causing INSERT to fail silently. Set to 0 for cash payments.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Payments table still uses old prefixed names (PaymentID as PK, no UUID
column, no PaymentTip column, required PaymentReceivedByUserID). Updated
INSERT to match actual production schema.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
