Cross-Platform CAD & BIM Binary Parsing in Swift (ArrayBuffer/WASM Interop)

While investigating zero-upload client-side diagnostics for engineering assets (CAD/BIM), we explored using Swift compiled to WebAssembly (via SwiftWasm) to inspect raw binary headers directly from JavaScript ArrayBuffer streams. By parsing standard magic byte offsets (e.g. AC10xx signatures in AutoCAD DWG files, STEP AP203/242 B-Rep entity trees, and IFC4 schema headers), client applications can reliably verify CAD file compatibility without transmitting sensitive design IP to remote servers. ...