Delete row 477269 from events

seq 477269
id evt_5f6d09c9f179
kind signal_ingest
ts 2026-04-22T00:08:54.252051+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-22T00:01:09.681 ...
source_ref candidate:sc_25ca58bc1378f7a5
confidence 0.42
dedupe_key signal_enriched:discovery_earnings_calendar_delta: ...
episode_id NULL
created_at 2026-04-22T00:08:54.252098+00:00
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