nx_nofloat_moe_gate.nx

nx_nofloat_moe_gate.nx -- gates the no-float MoE FFN layer (MoE rung 1, 2026-07-15). The lib does router -> deterministic top-K -> fx_exp softmax -> K SwiGLU experts -> weighted mix, all Q16 integer. Teeth (every one deterministic; an INDEPENDENT serial reference implementation lives in THIS file with REVERSED reduction orders -- exact integer sums are order-free, so lib and reference must agree to the BIT): T1 EXACT vs the independent reverse-order reference on 3 distinct inputs (0 mismatched cells) T2 determinism: repeat call byte-identical (and T1's order-reversal already proves order-invariance) T3 sparsity REAL + router alive: exactly K experts computed per forward (cnt), >=2 distinct experts selected across the 3 inputs (the router discriminates; selections logged) T4 NEG-CONTROLS: (a) corrupting one router row CHANGES a selection (routing is weight-driven, not fabricated); (b) dense K=E output DIFFERS from sparse K=2 (sparsity has measurable effect) T5 work happened: >= half the output cells nonzero on every input Synthetic Q16 weights/inputs from a fixed integer formula (no randomness, no clock). Runs in ms. expect_exit: 0 license_tier: ORIGINAL No hw writes (Rule 26).