🌐 Hydrogen-like orbital viewer

A molgang-native, dependency-free visualization of the electron probability density |ψ|² for hydrogen-like orbitals — a cross-section through the x–z plane. Orbital shapes are the intuition behind bonding: the Knits between atoms in a Fiber. Analytic wavefunctions, rendered on an HTML5 canvas — no external libraries, no licensing caveats.

Wavefunctions rendered from analytic hydrogen-like solutions (atomic units, unnormalised, density scaled per orbital). This is a teaching visualisation, not a quantitative solver — the Quantum lab roadmap (#214) adds real electronic-structure compute (RDKit/PySCF) and a quantum path (Qiskit Nature) later.