Delete row 51031 from events

seq 51031
id evt_23ef34393633
kind llm_usage
ts 2026-04-15T22:13:45.255180+00:00
actor llm:openai
subject_entity_ids []
payload {"cost_usd":0.000567,"meta":{" ...
source_ref NULL
confidence 0.0
dedupe_key llm_usage:resp_0bca9fb571c855d20069e00d967ca48197b ...
episode_id NULL
created_at 2026-04-15T22:13:45.255237+00:00
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