Delete row 30971 from events

seq 30971
id evt_4d7fea95dbe2
kind signal_candidate_ingest
ts 2026-04-12T21:26:50.599768+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-12T21:26:50.599 ...
source_ref rss
confidence 1.0
dedupe_key discovery_unusual_volume_delta:0d4810f5e4226c72
episode_id NULL
created_at 2026-04-12T21:26:54.766967+00:00
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