The Interior Observer Cosmological Framework: Paper 2 — Derivation of γ from Quantum Gravity, the Bogoliubov No-Go Theorem, the Holographic Thermalization Bridge, the Space-Time Decoupling Problem, and the Holographic Timescale Hierarchy

Paper 2 of the Interior Observer Cosmological Framework. A no-go theorem establishes that semiclassical QFT on stationary Schwarzschild spacetime cannot produce the boost factor γ = √(r_s/l_P). γ is then derived from the Carlip-Virasoro horizon algebra through the dimensional reduction natural to interior observers, with SymPy residual = 0 and zero free parameters. A four-check holographic thermalization bridge connects 1+1D horizon states to the observed 3+1D CMB photon bath. The cosmological constant Λ_IO matches Planck 2018 to 2.4% with no Barbero-Immirzi dependence. The Space-Time Decoupling Δ = 5.624 is exhaustively characterized across 14 computational steps; the OS dust interior's domain boundary (z_max = 0.519) is established and the Vaidya-to-OS two-phase transition is identified as Paper 3's central calculation. All results supported by 394 automated verification checks. Companion to Paper 1: https://doi.org/10.5281/zenodo.18854813