Delete row sig_2a5f83699aec from signals

id sig_2a5f83699aec
event_id evt_b45f4d4b6b63
watcher_id NULL
signal_type discovery_ipo_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_3917ed2bd ...
dedupe_key signal_enriched:discovery_ipo_delta:afd313365dc1d2 ...
throttle_s 0
created_at 2026-04-09T16:35:58.987693+00:00
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