Delete row 471034 from events

seq 471034
id evt_4334b75c3db6
kind signal_ingest
ts 2026-04-21T12:49:52.826157+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-20T23:24:22.165 ...
source_ref candidate:sc_e87923eacb7c7459
confidence 0.42
dedupe_key signal_enriched:news_delta:15e942795c5b8c89
episode_id NULL
created_at 2026-04-21T12:49:52.826567+00:00
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