Delete row 468208 from events

seq 468208
id evt_fa0e430019e2
kind signal_ingest
ts 2026-04-21T01:16:31.853633+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-21T00:08:29.826 ...
source_ref candidate:sc_55f9ffb68c268eb5
confidence 0.42
dedupe_key signal_enriched:discovery_earnings_calendar_delta: ...
episode_id NULL
created_at 2026-04-21T01:16:31.853670+00:00
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