Support USPS ACS/EPF File Import for Subscriber Updates

Problem Statement

Publishers receive USPS ACS/EPF files containing address corrections and undeliverable mail information. Pelcro currently supports pre-mail NCOA processing but does not support importing ACS/EPF files to update subscriber records after fulfillment.

User Story

As a circulation manager, I want to import USPS ACS/EPF files into Pelcro so that subscriber addresses and deliverability statuses can be updated efficiently.

Definition of Done

• Admin users can upload an ACS/EPF file into Pelcro.

• Pelcro matches records to existing subscribers.

• Address updates and undeliverable statuses are applied to matched subscribers.

• A processing summary shows updated, unmatched, and failed records.