Delete row sig_2e3fd33bd5fd from signals

id sig_2e3fd33bd5fd
event_id evt_b79715a54405
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_df8781c5e ...
dedupe_key signal_enriched:news_delta:aff5e193aa1ffc54
throttle_s 0
created_at 2026-04-07T14:17:34.672666+00:00
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