Delete row 18937 from events

seq 18937
id evt_a9177558edb1
kind llm_usage
ts 2026-04-10T18:45:57.412465+00:00
actor llm:openai
subject_entity_ids []
payload {"cost_usd":0.000754,"meta":{" ...
source_ref NULL
confidence 0.0
dedupe_key llm_usage:resp_0c44a5fd7becc1890069d9456353208194b ...
episode_id NULL
created_at 2026-04-10T18:45:57.412507+00:00
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