Delete row sig_1a91a353825c from signals

id sig_1a91a353825c
event_id evt_715b0f76baa2
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_f7095be16 ...
dedupe_key signal_enriched:news_delta:02080cb54f5a68f8
throttle_s 0
created_at 2026-04-06T17:07:34.257020+00:00
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