Delete row 344211 from events

seq 344211
id evt_c26e9e5409f3
kind signal_ingest
ts 2026-04-19T21:59:41.652054+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-19T21:44:00.177 ...
source_ref candidate:sc_6902ee796d1e65f3
confidence 0.7
dedupe_key signal_enriched:discovery_unusual_volume_delta:c49 ...
episode_id NULL
created_at 2026-04-19T21:59:41.652118+00:00
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