📥 Invoice Acceptance Evidence Gate

Invoice Acceptance Evidence Gate distinguishes sending an invoice from proving that the customer's accounts-payable workflow accepted it. It compares each invoice with a customer-specific submission profile, checks required fields and attachments, verifies the destination, selects the latest correction version, preserves portal or email receipt evidence, surfaces rejection reasons, and requires an acceptance timestamp before aging begins. It returns a ledger, findings, acceptance gate, and memo. It never submits invoices, contacts a customer, collects payment, or provides accounting or legal advice.