Delete row sig_4d77daf14cc9 from signals

id sig_4d77daf14cc9
event_id evt_b4018629c849
watcher_id NULL
signal_type system_distress
value {"alerts":[{"level":"warn" ...
threshold NULL
direction NULL
severity high
window NULL
source observability
reason_trace {}
dedupe_key observability_alert:2026-04-10T19
throttle_s 0
created_at 2026-04-10T19:04:32.837060+00:00
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