Delete row sig_02cf93a01e5e from signals

id sig_02cf93a01e5e
event_id evt_ec940ff56ed7
watcher_id NULL
signal_type opportunity_research_snapshot
value {"as_of":"2026-04-07T09:31:33.803986+0 ...
threshold NULL
direction NULL
severity NULL
window NULL
source opportunity_research_ingestor
reason_trace {}
dedupe_key opportunity_research_snapshot:6967f0c47051560d
throttle_s 0
created_at 2026-04-07T09:31:33.803986+00:00
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