Delete row 140964 from events

seq 140964
id evt_ef18f605bade
kind signal_ingest
ts 2026-04-18T05:19:05.198913+00:00
actor collector:opportunity_research
subject_entity_ids []
payload {"created_at":"2026-04-18T05:19:05.198 ...
source_ref web_search:serper
confidence 0.6
dedupe_key opportunity_research_snapshot:089a578a0b199c0c
episode_id NULL
created_at 2026-04-18T05:19:06.659742+00:00
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