Delete row 480337 from events

seq 480337
id evt_83b344b7cd37
kind signal_ingest
ts 2026-04-22T10:12:11.299512+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-22T10:08:37.182 ...
source_ref candidate:sc_d75018e6a30cc942
confidence 0.35
dedupe_key signal_enriched:discovery_crypto_extremes_delta:48 ...
episode_id NULL
created_at 2026-04-22T10:12:11.299595+00:00
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