Delete row sig_9503c80b614c from signals

id sig_9503c80b614c
event_id evt_a9f25de132c8
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_052f34825 ...
dedupe_key signal_enriched:news_delta:cab00175a43e19c2
throttle_s 0
created_at 2026-04-21T16:42:29.534192+00:00
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