Design Blueprint: A Laser Polarimetry Satellite Measuring Vacuum Birefringence in a Long Orbiting Optical Cavity

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24142375): This paper presents a space mission design, computed from stated assumptions and not measured, built to measure one quantity: the phase retardation between polarisation components attributed to the vacuum term under test, for which the design case adopts 3.50e-11 radians of retardation. 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.