Delete row 229826 from events

seq 229826
id evt_ae6cb6c46ed2
kind signal_ingest
ts 2026-04-18T20:12:19.801598+00:00
actor daemon:signal_enrichment
subject_entity_ids []
payload {"created_at":"2026-04-18T20:11:33.286 ...
source_ref candidate:sc_dfd637a20e255585
confidence 0.28
dedupe_key signal_enriched:market_headline_delta:8e2cbfa9b1fb ...
episode_id NULL
created_at 2026-04-18T20:12:19.801696+00:00
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