Delete row sig_e9d226f8891e from signals

id sig_e9d226f8891e
event_id evt_9151f00d5e3d
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_348cb5e41 ...
dedupe_key signal_enriched:discovery_ipo_delta:4279d5108cce1e ...
throttle_s 0
created_at 2026-04-17T14:13:05.509159+00:00
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