Prologue: Two Arcs from One Neutron
The Prologue frames Book IV as a whole. Chapter 1 introduces the self-describing thesis: physics is what happens when the coherence kernel τ represents itself on its own boundary. The fiber–base decomposition splits τ³ into microcosm (fiber T², Book IV) and macrocosm (base τ¹, Book V), and the Hermetic Principle declares their union complete. Two arcs traverse this physics: the Complexity Arc (Book IV) climbs from the neutron through atoms, chemistry, fluids, and computation; the Force Arc (Book V) descends from gravity through gauge forces and cosmology. Both arcs share a common root—the Joint Core of Part I—and both are powered by a single constant: ι_τ = 2/(π + e).
Chapter 2 collects the three deliverables inherited from Books I–III—the five generators, the 4+1 sector template, and the E₁ export contracts—so that nothing need be re-derived.