Delete row 470955 from events

seq 470955
id evt_4c84855c0c9f
kind signal_candidate_ingest
ts 2026-04-21T12:20:48.730501+00:00
actor collector:discovery
subject_entity_ids []
payload {"created_at":"2026-04-21T12:20:48.730 ...
source_ref rss
confidence 1.0
dedupe_key discovery_new_listings_delta:360a00953a968491
episode_id NULL
created_at 2026-04-21T12:20:51.071230+00:00
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