Design Blueprint: Heat Leak Optimisation of a High-Temperature-Superconductor Current Lead Between Sixty-Four Kelvin and Four Kelvin

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24147720): This paper presents a computed design for a HTS current lead intended for cryogenic current delivery, with its performance, resource budgets and margins derived from stated assumptions rather than asserted. The headline results are: heat arriving at 4.2 K per kiloampere for the hybrid lead of 0.048 W per kA; heat arriving at 4.2 K per kiloampere for an optimised all-copper lead of 46.9 W per kA; r Status: DESIGN BLUEPRINT — SIMULATED, NOT MEASURED — NOT BUILT. All numbers are simulated values from the source paper's computation, deposited with this blueprint as compute.py and results.json. AI-use disclosure: Dave, an AI research system, assisted with the computation and drafting under the author's direction; author of record William Alexander Aldred.