Delete row sig_c9bfdcaf977e from signals

id sig_c9bfdcaf977e
event_id evt_65cf5d42847c
watcher_id NULL
signal_type opportunity_research_snapshot
value {"as_of":"2026-04-08T20:27:30.982415+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source opportunity_research_ingestor
reason_trace {}
dedupe_key opportunity_research_snapshot:94ec1749f08259c6
throttle_s 0
created_at 2026-04-08T20:27:30.982415+00:00
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