Delete row sig_d469300bb600 from signals

id sig_d469300bb600
event_id evt_7c283c047ac1
watcher_id NULL
signal_type macro_yield_curve_snapshot
value {"as_of":"01/02/2026","date ...
threshold NULL
direction NULL
severity NULL
window NULL
source treasury
reason_trace {}
dedupe_key macro_yield_curve_snapshot:78e1b0171ef80d9a
throttle_s 0
created_at 2026-04-07T16:37:24.965760+00:00
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