Delete row sig_197b21bfcb86 from signals

id sig_197b21bfcb86
event_id evt_5eca496dc7a3
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_d16ec8ca3 ...
dedupe_key signal_enriched:news_delta:066291b45b74ba49
throttle_s 0
created_at 2026-04-11T18:52:10.911361+00:00
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