Delete row sig_a65ff59e05e8 from signals

id sig_a65ff59e05e8
event_id evt_af956d598769
watcher_id NULL
signal_type discovery_options_flow_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_97cb67fdb ...
dedupe_key signal_enriched:discovery_options_flow_delta:5e12b ...
throttle_s 0
created_at 2026-04-17T18:02:19.234747+00:00
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