Delete row 31400 from events

seq 31400
id evt_39bb8b5f5cec
kind signal_candidate_ingest
ts 2026-04-12T23:40:24.258200+00:00
actor collector:markets
subject_entity_ids []
payload {"created_at":"2026-04-12T23:40:24.258 ...
source_ref Intellectia AI
confidence 1.0
dedupe_key market_headline_delta:dd25917161b3065c
episode_id NULL
created_at 2026-04-12T23:40:24.258456+00:00
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