Ab Initio Derivation of the Absolute Planar Coherence Limit: A 124.47 K Hardware Bound for High-Tc Superconductivity

This paper resolves the mechanism driving high-temperature superconductivity in cuprates and perovskites by abandoning continuous electron-phonon coupling (BCS theory). Operating within the Information Projection Model (IPM), superconductivity is redefined as a deterministic hardware memory-compression subroutine termed Pointer Coalescence. We demonstrate that 2D macro-crystalline planes structurally align with the universe's 2D holographic root array, generating an Algorithmic Shielding effect that bypasses 3D spatial rendering friction. By scaling the absolute hardware thermal noise floor (2.7249 K) by the exact geometric shielding ratio, we derive a rigid, zero-free-parameter theoretical upper bound for ambient-pressure planar superconductivity at Tc=124.47 K. This absolute limit perfectly bisects the empirical operational domains of YBCO and BSCCO crystals, providing a falsifiable engineering ceiling for high-materials and permanently superseding continuous phenomenological models.