nx_uxf_cid_gate.nx

nx_uxf_cid_gate.nx -- the D001 MIGRATION of nx_uxf_cid_test onto nx_gate_verdict (2026-09-06). WHY THIS EXISTS. nx_uxf_cid_test proved the self-describing multicodec CID in June 2026 and has been UNPROMOTABLE ever since: /api/promote refuses it D001 because it hand-rolls its pass and total counters and prints its own verdict line, so nx_gate_green cannot judge it and it records no harness frame -- flake and erosion stay invisible for it. The sanctioned answer is to MIGRATE, never to pass allow_own_verdict=yes, which would ship a permanently unreadable gate. EVERY TOOTH IS PRESERVED EXACTLY. The five checks are the original five, in the original order, with the original predicates; what changes is that gv_check owns the counting (so declared and executed cannot diverge) and gv_kv emits the values, so this gate's GREEN can be contradicted from outside by anyone who recomputes a CID. The original test is left untouched as provenance. license_tier: ORIGINAL No hw writes (Rule 26).