Delete row sig_c66c09d9a614 from signals

id sig_c66c09d9a614
event_id evt_5ef77d952163
watcher_id NULL
signal_type discovery_sector_rotation_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_7fd12dbc5 ...
dedupe_key signal_enriched:discovery_sector_rotation_delta:40 ...
throttle_s 0
created_at 2026-04-22T13:12:40.941923+00:00
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