Hartree–Fock in C++ (from scratch)

Closed-shell RHF with zero external dependencies: Obara–Saika integrals, Boys function, Cholesky + Jacobi generalized eigensolver, DIIS-accelerated SCF. Converges H₂/STO-3G to Szabo’s −1.1167 Hartree. The electronic sibling of the nuclear Skyrme–HF solver — same fixed-point loop, different force.