We present the microphysical extensions of Quantum Informational Relativity (QIR), built upon the informational field p(x) and the geometric modulation Z(p). This work develops, with full derivations, five complementary aspects: (i) the topological classification of stationary solutions and the emergence of particle families; (ii) perturbative quantization around informational solitons and the resulting mass spectrum; (iii) parameter mapping and experimental correspondence; (iv) an informational confinement mechanism consistent with strong interactions; (v) macro–micro continuity linking cosmology and particle structure. The framework preserves covariance, generalized conservation, and the unified Einstein equation with Z appearing in the numerator.