Delete row sig_e9ccc8b20cf3 from signals

id sig_e9ccc8b20cf3
event_id evt_8e744b1b9bf5
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_e5a9a14b6 ...
dedupe_key signal_enriched:news_delta:121c15f228f3f10b
throttle_s 0
created_at 2026-04-09T23:19:21.134680+00:00
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