Delete row sig_c9140c878410 from signals

id sig_c9140c878410
event_id evt_e728ac74c943
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_760dfa948 ...
dedupe_key signal_enriched:news_delta:a7b44d071115fdcd
throttle_s 0
created_at 2026-04-09T21:31:27.047594+00:00
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