Delete row sig_79072069acf7 from signals

id sig_79072069acf7
event_id evt_74ef53f030e5
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_0281c1e7c ...
dedupe_key signal_enriched:news_delta:d9076e2e03b5d3fc
throttle_s 0
created_at 2026-04-18T22:33:11.876003+00:00
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