Delete row 419543 from events

seq 419543
id evt_4af8eb5e1776
kind signal_candidate_ingest
ts 2026-04-20T10:15:21.892374+00:00
actor collector:news
subject_entity_ids []
payload {"created_at":"2026-04-20T10:15:21.892 ...
source_ref rss:Reuters
confidence 1.0
dedupe_key news_delta:34802a7cea10dfde
episode_id NULL
created_at 2026-04-20T10:15:21.892471+00:00
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