FeaSolveOperation

A solve of one tet volume, from the plan to the undo step (construct-fea-solve §FEJ-8).

In the namespace construct::xport. Declared in src/libs/libconstruct/construct/export/FeaSolve.hpp.

Detailed description

\1. plan() checks the item and picks the file the solve writes, next to the item's file, with the helpers PassengerOperation uses. 2. The shell resolves the regions, writes the load case and submits `fem.solve` with the item's file as `mesh.vtk`. 3. When the job is done and stillApplies() holds, the shell fetches `solved.vtk` to outputFile, and ops() is one undo step that sets `sourcePath`, `feaSolve`, `fieldInfo` and `presentation`. Undo restores all four.