Design Blueprint: Shear-Capped Acceleration Stage: Gradient Limits for a Compact Linear Accelerator Set by the Aldred Shear Bound

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24123377): The device is a ten-metre copper accelerating stage intended to add a stated energy increment to a charged-particle beam, with its gradient chosen not by optimism but by an explicit shear criterion applied to the electromagnetic stress in the cavity walls. 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.