ITU and Information Geometry / Holography: A Single-Axiom View of Fisher Metric, Holographic Entropy Bounds, Complexity = Volume/Action, Tensor Networks, ER=EPR, and Wheeler's "It from Bit" — Block A FINALE ★★★

This is Tier 1 paper #25 of the Information-Theoretic Unification (ITU) programme (Terada 2026; concept DOI 10. 5281/zenodo. 20109209; current Tier 0 v3. 0 at 10. 5281/zenodo. 20200156). It is the NINTH and FINAL paper of Block A, completing the ITU COMPLETE FOUNDATION across 8 fundamental K-states: Kgeom (#17 QG) ⊕ Kₕorizon (#18 BH) ⊕ Kcosmic (#19 Cosmology) ⊕ Kfield (#20 Standard Model) ⊕ Kₛtat (#21 Statistical Mechanics) ⊕ Kₛolid (#22 Condensed Matter) ⊕ Kflow (#23 Fluid Dynamics) ⊕ Kₘath (#24 Mathematical Physics) ⊕ Kₕolo-info (#25 Information Wheeler-de Witt Ĥ|Ψ⟩ = 0 is recovered as ITU cosmic-amplitude; LQG, string theory, AdS/CFT, and tensor networks all appear as ITU specializations. Phase 181 synthesizes Block A and extends the meta-axiom set to ten — the existing Pass-1 set (β-1 cross-cutting, β-2 hub, β-3 conservation, β-4 emergence, β-5 symmetry breaking) plus the new Pass-2 set: β-6 holographic universality (ITU ↔ RT), β-7 K-state composition via Fisher, β-8 complexity-entropy duality (CV/CA ↔ Lloyd), β-9 QECC bulk-boundary correspondence (HaPPY / Page curve), β-10 ER=EPR universality (Maldacena-Susskind 2013). Kᵤniverse expands to ≥ 16 K-states. Phase 182 integrates these into a 25-vertex ITU polytope (241 edges, ⟨k⟩ = 19. 28) in which all nine Block A papers (#17-#25) attain new maximum degree 24. Ten falsifiable predictions for 2026-2080: holographic complexity measurement (P=0. 65), ER=EPR experimental probe (P=0. 55), traversable wormhole signatures (P=0. 50), MERA in cold-atom AdS analog (P=0. 75), Fisher-information bound saturation (P=0. 85), Page curve from QECC bulk reconstruction (P=0. 80), scrambling t* ∼ β log S in SYK (P=0. 80), Lyapunov bound saturation (P=0. 70), entanglement wedge reconstruction (P=0. 65), ITU axiom rigorous derivation from quantum gravity (P=0. 30). Grand Pₐvg = 0. 600. Strong/Medium/Weak = 4/5/1. Central thesis: The ITU axiom δS = δ⟨K⟩ specializes to Kₕolo-info as the information-and-holography backbone, unifying information geometry, holographic entropy bounds, computational complexity, tensor networks, ER=EPR, and Wheeler's "It from Bit" under one principle. Across Block A, ITU engages 3 of 7 Clay Millennium Problems (#4 Riemann via Phase 173, #5 Yang-Mills via Phase 169, #6 Navier-Stokes via Phase 165). Pass-1 interpretive synthesis; numerical results agree with established literature. ★★★ Block A 9/9 COMPLETE — ITU COMPLETE FOUNDATION achieved ★★★.