Pocket-Door Cassette Header Deflection, Stud Cavity & Floor-Guide Sizer

Deterministic Euler-Bernoulli point-loaded roller beam deflection + wall-stud torsional clearance & floor-plough guide tolerances engine (.dxf, .pdf) built for Eclisse, Scrigno, Hafele, Johnson Hardware — zero-upload ephemeral Wasm RAM execution.

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