Delete row sig_29c61902da14 from signals

id sig_29c61902da14
event_id evt_2cd31daf2e0b
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_38f074b3d ...
dedupe_key signal_enriched:news_delta:525a283009c9ca08
throttle_s 0
created_at 2026-04-17T21:07:05.617487+00:00
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