Delete row 481315 from events

seq 481315
id evt_d23638cd3426
kind signal_candidate_ingest
ts 2026-04-22T12:11:11.616908+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-22T12:11:11.616 ...
source_ref rss
confidence 1.0
dedupe_key discovery_unusual_volume_delta:cd036eb908d2cc61
episode_id NULL
created_at 2026-04-22T12:11:15.301554+00:00
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