Delete row 28763 from events

seq 28763
id evt_df5491d30e7e
kind signal_candidate_ingest
ts 2026-04-12T10:44:59.953808+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-12T10:44:59.953 ...
source_ref rss
confidence 1.0
dedupe_key discovery_ipo_delta:673d3267d410f972
episode_id NULL
created_at 2026-04-12T10:45:03.598670+00:00
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