Delete row 12278 from events

seq 12278
id evt_fcb638dd6dd2
kind signal_ingest
ts 2026-04-10T01:38:38.184702+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-08T22:43:46.053 ...
source_ref candidate:sc_f75a9b8a3a64984c
confidence 0.86
dedupe_key signal_enriched:discovery_new_listings_delta:9f522 ...
episode_id NULL
created_at 2026-04-10T01:38:38.184764+00:00
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