Dario Panici

Note to self, must make a new environment locally to load in older DESC versions

make as an issue then merge this in @dpanici

Ah this actually is branched off of #494 , should I point this PR towards there, or just wait to merge until that one is ready and merged in?

closing until files are cleaned up

reopening so tests will run

Case for a precise-QA-like equilibrium in free boundary, each step in the proximal just gives a bad approximation, files are here: https://drive.google.com/drive/folders/19-F7cVb1yxks42eCI1Nx7DlxjCkyxaaf?usp=drive_link

@dpanici check thru notebooks and link here along with current commit that it occurs at

- https://desc-docs--1189.org.readthedocs.build/en/1189/notebooks/tutorials/free_boundary_equilibrium.html#Solovev-Tokamak SOLOVEV free bdry (on PR #1189 ) - https://desc-docs--1189.org.readthedocs.build/en/1189/notebooks/tutorials/advanced_optimization.html#Multigrid-method-with-proximal-optimizer QH proximal optimization (again on #1189 )

Something I have seen in a case where I get a bad approx error is when the eq subproblem default `xtol=1e-6` is actually a larger `xtol` than the outer optimization...

Try setting ftol=xtol=0 in subproblem, and only allow inner problem to end on gtol