Delete row 187967 from events

seq 187967
id evt_479b77411428
kind llm_usage
ts 2026-04-18T12:55:52.449282+00:00
actor llm:openai
subject_entity_ids []
payload {"cost_usd":0.001032,"meta":{" ...
source_ref NULL
confidence 0.0
dedupe_key llm_usage:resp_0f4e9657751d1bfe0069e37f5460b88197a ...
episode_id NULL
created_at 2026-04-18T12:55:52.449361+00:00
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