Digest shadow run needs attention

[cityscroll-scheduler]

The digest shadow rehearsal reported NEEDS_ATTENTION.

{
"redlines": [
{
"code": "historical_watch_zero",
"digest_id": "digest:aa5e959dd1746b1a138c2b13",
"watch_id": "watch:b67ba22a244a56b8b2f74152",
"reason": "A watch with prior items is receiving a zero-item digest.",
"evidence": {
"current_item_count": 0,
"matched_row_count": 0,
"digest_action": "none",
"trailing_max_item_count": 45,
"trailing_max_day": "2026-08-24",
"history_days": 30
}
}
],
"upstream_incidents": [],
"degraded_receipt": null
}

Observed at: 2026-09-20T10:10:37.244Z