Delete row sig_00b200e362fd from signals

id sig_00b200e362fd
event_id evt_adfd9eb8373c
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_8cf9a129e ...
dedupe_key signal_enriched:discovery_sector_rotation_delta:5e ...
throttle_s 0
created_at 2026-04-09T15:06:58.940339+00:00
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