Delete row 16004 from events

seq 16004
id evt_0654c5c815b0
kind signal_candidate_ingest
ts 2026-04-04T18:41:30.525565+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-04T18:41:30.525 ...
source_ref rss
confidence 1.0
dedupe_key discovery_unusual_volume_delta:8d538581bf148424
episode_id NULL
created_at 2026-04-04T18:41:33.285450+00:00
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