Delete row 281100 from events

seq 281100
id evt_5585aa7c1897
kind signal_ingest
ts 2026-04-19T06:24:48.035666+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-19T05:17:07.273 ...
source_ref candidate:sc_25d106b8d81da28d
confidence 0.78
dedupe_key signal_enriched:discovery_unusual_volume_delta:d1d ...
episode_id NULL
created_at 2026-04-19T06:24:48.035723+00:00
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