Delete row 45471 from events

seq 45471
id evt_10b3ea5bf771
kind signal_ingest
ts 2026-04-15T00:45:26.430928+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-14T22:34:43.934 ...
source_ref candidate:sc_1eed71b1ec36db1e
confidence 0.55
dedupe_key signal_enriched:market_headline_delta:441b185bd4ab ...
episode_id NULL
created_at 2026-04-15T00:45:26.430987+00:00
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