harihardiyan/Graphene-Tight-Binding-Audit-Toolkit: Haldane–Graphene Metrology Engine

A metrology‑grade diagnostic engine for graphene and Haldane tight‑binding models. This release provides a fully validated toolkit for auditing Dirac physics, Berry curvature, Chern numbers, and symmetry properties with high numerical precision. The engine includes: Accurate graphene Dirac‑point detection Fermi‑velocity extraction with Richardson extrapolation Berry phase and C₃ symmetry verification Fukui–Hatsugai–Suzuki Berry‑curvature computation Stable Chern‑number evaluation Haldane mass diagnostics at K and K′ Clean, modular JAX implementation optimized for reproducibility