Delete row 16918 from events

seq 16918
id evt_49e92eff72d6
kind signal_ingest
ts 2026-04-10T14:18:26.514779+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-10T14:13:04.518 ...
source_ref candidate:sc_ad73f73dcf67dff2
confidence 0.78
dedupe_key signal_enriched:discovery_sector_rotation_delta:27 ...
episode_id NULL
created_at 2026-04-10T14:18:26.514826+00:00
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