Gear Inspection Span-Over-Teeth (Wk) & Micrometer-Over-Pins (MdK) QC Compiler

Deterministic Exact transcendental involute inv(alpha_D) solver for even/odd Z pin tangency + helical ball contact & Wildhaber span k engine (.pdf, .csv, .json) built for Klingelnberg, Gleason, Mahr, Mitutoyo — zero-upload ephemeral Wasm RAM execution.

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