Design Blueprint: A Regolith Thermal Energy Store for Surviving the Lunar Night Sized from Heat-Capacity and Insulation Bounds

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24152038): This paper presents the sizing of a surface system for the Moon, designed around a single operating principle and computed from published material properties of its working environment. The headline results are: energy required for one night of 3,823.2 MJ; regolith bed mass of 20,722 kg; bed volume of 12.951 m3. The total mass is 277.2 kg including a twenty percent margin over the component subtotal. Every figure was produced by the accompanying computation script from stated assumptions about density, strength, thermal properties and composition; no figure is asserted without its derivation. 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.