This whitepaper provides a version-level overview of the PAC–µ 8 framework at ver sion v1.0. The aim is not to re-derive the full operator–spectral foundations, but to summa rize what is fixed, what is predicted, and how those predictions are intended to be tested. We proceed in three steps. First, we recall the operator–spectral core of PAC–µ 8 : a positive generator K ≥ 0, the vibrational Hamiltonian H = ℏ √ K, and a dual pair of “mother equations” on the AV side (vibrational stochastic PDE with compression functional and µ-threshold) and on the AQ side (generalized Lindblad–PAC equation with audit-structured dissipators). These are connected by an explicit bridge equivalence. Second, we explain the upgrade from v0.9 to v1.0. Version v0.9 introduced six rigid predictions: (i) an arithmetic-spectral locking and time drift for the fine-structure constant α; (ii) a neutrino mass sum Σmν ≈ 0.21 eV with mee ≈ 0.058 eV; (iii) a high-frequency gravitational-wave dispersion law with power γ = 3/2 and subluminal group velocity; (iv) oscillatory modifications to the ultra-high-energy cosmic-ray (UHECR) spectrum near the GZK cutoff; (v) a geometric upper bound on entanglement entropy with a PAC–µ 8 -specific boundary factor; and (vi) quantum fluctuations in time-dilation rates tied to matter den sity and a µ-dephasing constant. Version v1.0 does not alter these predictions; instead, it wraps them into an explicit multi-channel experimental roadmap and introduces three struc tural hypotheses concerning audit coupling strengths, adiabatic drift of the phase–arithmetic spectral mapping, and medium screening effects. Third, we outline the modular architecture at v1.0. Two modules are especially impor tant. The first is the “black hole as a perfect laboratory for quantum gravity” formulation, which fixes how KBH enters the AV and AQ mother equations and how high-frequency gravitational-wave dispersion should be read out. The second is a collection of six spectral compression modules (from graphene and hidden optical magnetism to brain states, LHC fireballs, and µ-fusion reactors) that serve as engineering and phenomenological windows. The resulting document is a “version whitepaper” for PAC–µ 8 v1.0: it is intended as a stable reference for what the framework currently commits to—conceptually, structurally, and numerically—and how those commitments are expected to be audited in the laboratory and in the sky