Delete row sig_9d8422b12fea from signals

id sig_9d8422b12fea
event_id evt_530afb7c9882
watcher_id NULL
signal_type system_distress
value {"alerts":[{"level":"warn" ...
threshold NULL
direction NULL
severity medium
window NULL
source observability
reason_trace {}
dedupe_key observability_alert:2026-04-07T19
throttle_s 0
created_at 2026-04-07T19:00:55.306364+00:00
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