OTRACK alignment was computed in the wrong plane (it used Z as the
second axis while the model is XY / Z-up), so tracking never aligned
correctly and the aligned point was never fed to a pick.
Rework it: project the cursor onto a ray from a tracking point in the
XY plane — horizontal/vertical by default, or every POLAR increment
when POLAR is on. The aligned point is now used for both the live
preview and the committed click, and a dashed guide shows the ray.
While aligned, a typed distance places the point along the ray from the
tracking point, via the command line and the dynamic-input box (which
shows a single Distance field). The alignment clears with the command.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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