3D Witness Confidence Tower

This is the same Bayesian multi-witness combination as the 2D testimony simulator, rebuilt as a rising tower instead of a growth curve: witness nodes ring the base, each contributing one stacked layer sized by its log-likelihood ratio, and those layers stack straight up into a central confidence tower. When witnesses are genuinely independent the tower's full naive height is honest evidence — but drag the correlation slider up and a shared-source orb appears overhead, beaming a contamination link down to every node, and a gold cap descends to mark the correction: the translucent red slice of tower above that cap is confidence the naive sum manufactures by treating one shared story as N independent ones. Orbit around the tower to see how thin the "real" blue core gets once a dozen witnesses turn out to have compared notes first.