Delete row 8471 from events

seq 8471
id evt_6f0dad1f7e8c
kind signal_ingest
ts 2026-04-09T22:15:17.006858+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-08T21:48:34.563 ...
source_ref candidate:sc_4f30017e3cb1b762
confidence 0.55
dedupe_key signal_enriched:news_delta:2fd7fa38ba8c3c2a
episode_id NULL
created_at 2026-04-09T22:15:17.006908+00:00
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