Delete row 468491 from events

seq 468491
id evt_ffa9d2583ca5
kind signal_candidate_ingest
ts 2026-04-21T01:39:14.218814+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-21T01:39:14.218 ...
source_ref rss
confidence 1.0
dedupe_key discovery_sector_rotation_delta:6f1a960de8f225ee
episode_id NULL
created_at 2026-04-21T01:39:19.043367+00:00
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