Supplementary Materials

All Python implementations are available in the accompanying repository. The proof-of-concept script poc_spectral_vs_euclidean.py exactly reproduces the reported results and allows further exploration of different potentials, boundary conditions, and fidelity thresholds. Key parameters: Λ = 1  , κ = 0.15  , K     = 12
  max  , N   = 800
  τ  , N      = 20,000
  paths  , seed =  42  .