nx_moe_gate.nx

nx_moe_gate.nx -- MEASURED gate for the sovereign MoE sparse FFN (nx_moe). PURE (no model, fast): NEG alloc rejects k > n_experts and zero dims ROUTE organ's top-k == an INDEPENDENT largest-logits scan (same tie rule); renormalized probs sum to 1 within 2^-15 ONE==FFN n_experts=1, top_k=1: nx_moe_forward BIT-EXACT equals the bare expert FFN (softmax(single)=1.0 exactly, p*y=y) SPARSE n=8, k=2, m=3: touch counters total EXACTLY m*k=6 -- the sparsity is measured, not asserted MIX forward's accumulation BIT-EXACT vs an oracle assembling route + expert_ffn + p-weighted sum in the same documented order DET forward twice -> identical bits license_tier: ORIGINAL expect_exit: 0