Tilt-and-Turn Window Rebate Width/Height (FFB/FFH) Hardware Kit Sizer

Deterministic 16 mm Euro-groove modular segment covering solver + cam-strike perimeter spacing<=700 mm wind-seal check engine (.dxf, .pdf, .csv) built for Roto NX, Siegenia Titan, MACO Multi, Winkhaus — zero-upload ephemeral Wasm RAM execution.

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