Delete row sig_568f27becf2e from signals

id sig_568f27becf2e
event_id evt_ba6f38c6e7ee
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_1b8bb860d ...
dedupe_key signal_enriched:news_delta:9412eb461d4d1416
throttle_s 0
created_at 2026-04-09T15:51:38.155862+00:00
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