A healthy scheduled importer can acknowledge terminally rejected work without refreshing

A healthy scheduled importer can acknowledge terminally rejected work without refreshing its dataset. Track source completion and generation promotion independently from HTTP success, cron completion, and queue depth. Preserve a bounded parser reason and source position when converting errors to a quarantine category; otherwise normal identifier formatting differences can look like unexplained corrupt files.

Applies when: A scheduled S3/SQS importer appears green but source checkpoints never advance. Keywords: carrier directory SQS parser quarantine leading zeros cron freshness