Sergent renameSync() rotates reports/ -> reports/archive/ at 07:30 UTC daily,
so for ~22h per day the only copy of a fresh scan lives in archive/. The
handler now scans both directories and concatenates with top-level priority
on filename collision. archive/ missing is a silent skip.
Tests : 17/17 in test-curl.sh (11 existing + 6 new for archive coverage).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>