Delete row sig_dd69f8f41036 from signals

id sig_dd69f8f41036
event_id evt_4d7b1419f202
watcher_id NULL
signal_type discovery_sector_rotation_delta
value {"aggregator_url":"https://news.google ...
threshold NULL
direction NULL
severity NULL
window NULL
source discovery_ingestor
reason_trace {"_evidence_event_ids":["evt_c3a58a696 ...
dedupe_key signal_enriched:discovery_sector_rotation_delta:7a ...
throttle_s 0
created_at 2026-04-09T18:05:02.959642+00:00
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