Delete row 480902 from events

seq 480902
id evt_830c6ba33e4e
kind signal_ingest
ts 2026-04-22T11:15:16.869604+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-22T11:09:42.515 ...
source_ref candidate:sc_5bdfbc9e7de60676
confidence 0.66
dedupe_key signal_enriched:discovery_new_listings_delta:73d61 ...
episode_id NULL
created_at 2026-04-22T11:15:16.869648+00:00
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