Delete row 475635 from events

seq 475635
id evt_276ce9e2df41
kind signal_ingest
ts 2026-04-21T23:17:27.021674+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-21T18:18:22.267 ...
source_ref candidate:sc_226217daef651c45
confidence 0.52
dedupe_key signal_enriched:discovery_sector_rotation_delta:37 ...
episode_id NULL
created_at 2026-04-21T23:17:27.021748+00:00
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