AlecKriebel/Math: Simultaneous amplification below fitness three halves — preprint v1.0.0

Preprint v1.0 release notes This public research snapshot establishes the explicit lower bound [ R_{\mathrm{sim}}\ge 3/2. ] It contains the complete paper, deterministic PDF, source, and exact replay package for the center--triangle construction. It also includes: the exact order-N^-2 endpoint suppression certificate for that family; exact finite and growing refutations of the proposed normalized-product endpoint separator; an exact refutation of the balanced normalized arithmetic separator; proof that 1/3 is the maximal possible Bd coefficient in a universal convex affine separator, together with an exact necessary coefficient window; the one-third affine theorem for every positively weighted triangle; and scoped portal and arbitrary-weight clique--pendant obstruction theorems. The universal endpoint disjunction, every universal finite upper bound, and the exact value of R_sim remain open. This is a public preprint and exact certificate release, not a peer-reviewed journal publication or journal submission.