Delete row 469954 from events

seq 469954
id evt_afd2401591ac
kind signal_candidate_ingest
ts 2026-04-21T07:45:48.956872+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-21T07:45:48.956 ...
source_ref rss
confidence 1.0
dedupe_key discovery_unusual_volume_delta:b9b5519cd387f22d
episode_id NULL
created_at 2026-04-21T07:45:51.505766+00:00
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