Delete row sig_fb9bf935832e from signals

id sig_fb9bf935832e
event_id evt_a3c12b195b2f
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_eadd60fe9 ...
dedupe_key signal_enriched:news_delta:eb8e97f01c0ba821
throttle_s 0
created_at 2026-04-20T13:34:06.825418+00:00
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