Delete row sig_64515b1cd75d from signals

id sig_64515b1cd75d
event_id evt_fbf548402c2c
watcher_id NULL
signal_type technical_indicator_signal
value {"bars":509,"confidence":0.7391376 ...
threshold NULL
direction NULL
severity high
window NULL
source technical_analyzer
reason_trace {"cutoff_iso":"2026-04-06T20:07:55Z ...
dedupe_key ta:technical_indicator_signal:bigMoveUp:big_move:L ...
throttle_s 0
created_at 2026-04-09T20:07:55.116892+00:00
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