uv(flight-recorder): stage-by-stage order tracer + dirty-25 root-cause maiden run
Read-only harness correlating scan->pick->size->bridge->drain->kernel->venue->
fill->flight->closure->capital->friction per trade_id. 20 tests, mutation-RED
verified (kernel-verdict flip). Maiden sweep classifies all 25 bridged-no-venue
rows: 15 PHANTOM_KERNEL_REFUSED (6 SLOT_BUSY enters, 9 NO_OPEN_POSITION exits),
5 SUBMITTED_VENUE_DEAD (BAND/CELR offline on VST), 4 LOG_GAP (pre-restart),
1 SUBMITTED_NO_VENUE_EVIDENCE (THETA phantom exit). 3 refused-exit orphans
confirmed open at venue (THETA 3298.1, LTC 11.09, BNB 0.861).
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