Delete row 468451 from events

seq 468451
id evt_29074e7456d7
kind signal_ingest
ts 2026-04-21T01:38:25.020072+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-21T00:08:29.826 ...
source_ref candidate:sc_53fa51b0f639ec01
confidence 0.42
dedupe_key signal_enriched:discovery_earnings_calendar_delta: ...
episode_id NULL
created_at 2026-04-21T01:38:25.020128+00:00
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