Delete row 20198 from events

seq 20198
id evt_68be612e7c9d
kind signal_candidate_ingest
ts 2026-04-10T22:42:10.560858+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-10T22:42:10.560 ...
source_ref rss
confidence 1.0
dedupe_key discovery_unusual_volume_delta:9768f6b437679f17
episode_id NULL
created_at 2026-04-10T22:42:13.600952+00:00
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