Update payment file log from incoming bank CSV uploads

Bank CSV uploads land in a shared folder without a canonical file or log, creating reconciliation drift and manual fixes. You get a canonical file and an updated reconciliation row within minutes.

Overview

Stop chasing disparate bank CSVs and manual replacements that slow reconciliation. This keeps a single canonical bank file and reconciliation row current within minutes of upload, so billing and engineering can resolve mismatches before the next settlement run.