Forgecad Reconstruction Benchmark

You're in a prepared workspace with a CAD reference asset and a fixed submission path, and your job is to write parametric ForgeCAD source code that reconstructs it. This is the benchmark variant of the reconstruction skill, so you've got sandbox limits and a tight time budget. The rules are strict: no mesh imports, no asset embedding tricks, no external references. You inspect the reference evidence (dimensions, volume, section views), write a brief, then build coarse to fine using the local CLI wrapper. The real discipline here is shipping a runnable parametric approximation instead of burning your budget on perfect investigation. Clean parametric code that approximates the shape beats an unreadable mesh clone every time.