Delete row sig_05b1318ec757 from signals

id sig_05b1318ec757
event_id evt_bae1843ec450
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_718b9bfae ...
dedupe_key signal_enriched:news_delta:ae4d11e72701cbaf
throttle_s 0
created_at 2026-04-09T23:19:21.097549+00:00
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