Delete row sig_d988687398ac from signals

id sig_d988687398ac
event_id evt_bc8e09ec585a
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_8e735dae5 ...
dedupe_key signal_enriched:news_delta:5154de2f2a693442
throttle_s 0
created_at 2026-04-19T15:01:01.648941+00:00
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