Fermionic Strings from Topological Phase Transitions: Geometric Origin of Spin and Chirality in QCD

We establish a geometric mechanism for fermionic string emergence through torsion-spin couplingduring topological phase transitions (S2 ⇌ T 2). Unlike supersymmetric string theories, our modelderives: (1) Worldsheet Dirac action from helical defects, (2) Curvature-induced quark masses, (3) Chiral condensates. Quantum simulations on 8-qubit processorsshow 85% fidelity for proton-like configurations. The framework resolves the spin-statistics problemfor topological strings while predicting observable quark-filament junctions.