This browser-only demonstrator uses the standard Gaussian kernel and ordinary finite-dimensional linear algebra. It is intentionally separated from the protected research chain: no asymptotic theorem, crossover constant, proof reduction, certificate, or internal implementation is exposed here.
Two independently perturbed index sets define a finite Gaussian collocation matrix. Changing either grid alters the interaction geometry and therefore the finite numerical conditioning. The heatmap and singular-value estimate make that effect visible without exposing the protected analytical machinery.