Delete row 166849 from events

seq 166849
id evt_3ddfcc6e21b6
kind signal_ingest
ts 2026-04-18T09:29:11.615892+00:00
actor collector:opportunity_research
subject_entity_ids []
payload {"created_at":"2026-04-18T09:29:11.615 ...
source_ref web_search:serper
confidence 0.6
dedupe_key opportunity_research_snapshot:84fc955acf7f8436
episode_id NULL
created_at 2026-04-18T09:29:13.108587+00:00
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