Delete row 474405 from events

seq 474405
id evt_24199447bab2
kind signal_ingest
ts 2026-04-21T22:34:24.322663+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-21T17:33:09.362 ...
source_ref candidate:sc_3145cca13ccdce93
confidence 0.42
dedupe_key signal_enriched:news_delta:0c10367a5e95aed3
episode_id NULL
created_at 2026-04-21T22:34:24.322734+00:00
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