Delete row 480169 from events

seq 480169
id evt_1151ca1fef39
kind signal_ingest
ts 2026-04-22T09:29:42.866449+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-22T09:29:19.638 ...
source_ref candidate:sc_b67b22ebdfe50e5c
confidence 0.42
dedupe_key signal_enriched:news_delta:e0093abbc6a67fee
episode_id NULL
created_at 2026-04-22T09:29:42.866515+00:00
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