Delete row sig_177c051a3683 from signals

id sig_177c051a3683
event_id evt_c1c751e78f96
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_709e8f13b ...
dedupe_key signal_enriched:news_delta:6a4523002c831706
throttle_s 0
created_at 2026-04-22T07:58:13.893823+00:00
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