Deterministic Timoshenko variable-cross-section beam finite-element eigenvalue optimization (f1, f2=4*f1, f3=10*f1) via cubic spline arch engine (.dxf, .wav, .csv, .pdf) built for Marimba One, Adams Musical, Musser, Yamaha Percussion — zero-upload ephemeral Wasm RAM execution.
Running ephemeral Wasm verification…