Delete row sig_e9e0cd93181a from signals

id sig_e9e0cd93181a
event_id evt_83f55e3a02d0
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_c667a0938 ...
dedupe_key signal_enriched:news_delta:2511e9b0dcb3d6e2
throttle_s 0
created_at 2026-04-21T02:24:00.102228+00:00
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