Delete row 471145 from events

seq 471145
id evt_ee5c694b3384
kind signal_ingest
ts 2026-04-21T13:29:06.961794+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-21T00:02:03.640 ...
source_ref candidate:sc_c9773e890b04db27
confidence 0.42
dedupe_key signal_enriched:news_delta:a597487899334f6b
episode_id NULL
created_at 2026-04-21T13:29:06.962205+00:00
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