Delete row 15804 from events

seq 15804
id evt_c032d472c21f
kind signal_ingest
ts 2026-04-10T11:06:56.295746+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-10T11:05:59.598 ...
source_ref candidate:sc_135a782622c6a89d
confidence 0.74
dedupe_key signal_enriched:news_delta:c7ce2b98fb2a35a4
episode_id NULL
created_at 2026-04-10T11:06:56.295798+00:00
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