Delete row sig_4188aac879c9 from signals

id sig_4188aac879c9
event_id evt_30ae23bfa3ce
watcher_id NULL
signal_type news_headline_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source news_rss
reason_trace {"_evidence_event_ids":["evt_adda42b6d ...
dedupe_key signal_enriched:news_delta:3dde21d3d7964c51
throttle_s 0
created_at 2026-04-20T03:50:23.989056+00:00
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