Delete row 30779 from events

seq 30779
id evt_388b47900727
kind signal_ingest
ts 2026-04-12T19:46:24.141101+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-12T17:46:47.322 ...
source_ref candidate:sc_703dff1639a8acc5
confidence 0.62
dedupe_key signal_enriched:discovery_unusual_volume_delta:a92 ...
episode_id NULL
created_at 2026-04-12T19:46:24.141170+00:00
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