Delete row 468406 from events

seq 468406
id evt_eaac2217bfcd
kind signal_ingest
ts 2026-04-21T01:36:22.761444+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-21T00:08:29.826 ...
source_ref candidate:sc_44f89314b9b3869a
confidence 0.42
dedupe_key signal_enriched:discovery_earnings_calendar_delta: ...
episode_id NULL
created_at 2026-04-21T01:36:22.761502+00:00
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