Design Blueprint: A Torsion-Coupled Seismometer for Rotational Ground Motion with a Computed Angular Noise Floor

Design blueprint derived from the source paper (DOI 10.5281/zenodo.24129642): Rotational ground motion is the neglected half of seismology: conventional seismometers record translation, and rotation is recovered, if at all, by differencing separated instruments. 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.