Delete row sig_06573d386eb6 from signals

id sig_06573d386eb6
event_id evt_bfc159498dce
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_eb8e3a271 ...
dedupe_key signal_enriched:news_delta:b85a4b3db252e67c
throttle_s 0
created_at 2026-04-20T06:08:40.038486+00:00
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