Delete row 464835 from events

seq 464835
id evt_a922882db4e9
kind signal_ingest
ts 2026-04-20T19:11:50.370303+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-20T18:43:38.179 ...
source_ref candidate:sc_42875968ac0c7dd9
confidence 0.42
dedupe_key signal_enriched:news_delta:97d2f1f28407330b
episode_id NULL
created_at 2026-04-20T19:11:50.370415+00:00
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