# Part I — The Main Derivation Part I contains the main chain of the book. It begins from the minimal ontological claim that something exists and redistributes continuously. From there it derives continuity, source-free transport, curl preservation, double-curl or Maxwellian transport, and the first organized consequences of bounded electromagnetic closure. The thirteen chapters that follow carry that chain through the first physical reconstructions: topology and discreteness, mass, charge, the Schrödinger sector, Newtonian flux accounting, and gravity as refraction. Part II then gathers what comes after the spine itself: - corollaries that clarify the ontology, - and appendices that supply later technical derivations without interrupting the main line.