Unified Derivation of the Four Fundamental Forces in Quantum Spin Torsion Theory (QST v7): Framework and Preliminary Experimental Verification

Quantum Spin Torsion Theory version 7 (QST v7) unifies the four fundamental forces—electromagnetic, strong, weak, and gravitational—as emergent geometric effects from particle spin interactions with the spinor ether field (\Psi_{\rm SE}) and fractal dimension gradients (\nabla D(x)). This paper derives the QST unified force formula (\mathbf{F}{\rm QST} = \kappa \sigma^2 (\nabla D(x) \times \mathbf{J}{\rm SC})), showing its application to each force. Preliminary verification uses 2025 experimental data from muon (g-2), high-frequency gravitational waves, THz optics, and galaxy rotation curves, supporting the formula with deviations <1(\sigma).