General Coherence Field Theory (GCFT) Hadron Spectroscopy Volume: Quarkonia, Light Multiplets, Cosmology Interface, and Phenomenological Infrastructure

General Coherence Field Theory (GCFT) is a unified framework in which a single complex scalar field ΞΞ constitutes the fundamental substrate of reality. All particles, forces, gravity, spacetime, and cosmology emerge as topological configurations, coherence gradients, and phase dynamics of ΞΞ. This manuscript is the comprehensive hadron spectroscopy volume of the GCFT programme, containing: A complete derivation of electromagnetism from the Noether current of ΞΞ with minimal U(1)U(1) gauge coupling, correcting the misleading shortcut E=∇θE=∇θ. Explicit reconstruction of the Standard Model: leptons, baryons, mesons, and bosons as emergent xions (amplitude knots) with quantized luxion counts. Derivation of fine structure (spin–orbit, tensor, hyperfine) from torsional shear in the nonlinear ββ-term, applied to light hadrons, charmonium, and bottomonium up to FF-waves. High-precision numerical spectroscopy tables for baryon octet/decuplet, meson nonets, and unified charmonium/bottomonium spectra (S through F waves), with agreement to sub‑percent accuracy using only two global parameters. A gravity scaffold: explicit stress‑energy tensor for the βK2βK2 sector, weak‑field limit, and discussion of how the Newtonian potential emerges from coherence excess. A cosmology interface: homogeneous FLRW background, linear perturbations, growth, and a minimal ΛΛCDM+GCFT stub for numerical audit. A translation dictionary mapping GCFT constructs to conventional QCD and NRQM language. Honest epistemic classification of all parameters (Table 10), failure modes, open programme fronts (quantization, electroweak interface, black holes, numerical code), and a roadmap to a predictive, falsifiable unified theory. The manuscript is designed as a freestanding reference for GCFT spectroscopy while maintaining cross‑links to companion volumes on cosmology, gravity, and the Standard Model interface. It prioritizes transparency, reproducibility, and testability, providing a solid foundation for evaluating the claims of a single‑field unification from the quantum scale to the cosmos