High-Power Parallel LED-String Thermal Current-Hogging Runaway & TM-21 L70 Life Solver

Deterministic Coupled electro-thermal multi-branch Shockley-Joule fixpoint I_k(V_bus, T_jk) with negative dV_f/dT feedback loop stability eigenvalue & IES TM-21 Arrhenius exponential lumen decay engine (.json, .csv) built for Cree LED, Samsung LED (LM301H), Lumileds, Mean Well — zero-upload ephemeral Wasm RAM execution.