Updated config space paper plots

[LisaGoh]

Hello, I cleaned up and updated all the notebooks to create the plots in the configuration space paper!

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[cailmdaley]

nice! about to review but i wanted to ask if you'd be interested in doing something like what was done in the SPT-3G D1 paper on the diagonal? both pretty and more information, will make it more likely that people use our plots. it's implemented in Karim's fork of getdist (example notebook here. happy to prototype it in order to not make more work for you

[cailmdaley]

Looks great Lisa, nice cleanup! Two small things I noticed:

1. Whisker plot separator loop (S8_om_sigma8_whisker.ipynb) — the for ax in axs: loop on the separation lines doesn't use ax; it draws on ax1/ax2/ax3 directly, so each line gets drawn 3× redundantly. Doesn't affect the output, just a no-op loop.

2. if → elif in get_chi2.ipynb — the chain-loading cell has:

if 'nautilus' in root:
    samples = ...
if 'mh' in root:       # ← should be elif
    ...
else:
    samples = ...       # overwrites nautilus case

For a nautilus root, the else branch (polychord format) runs after the nautilus branch, overwriting it. contours.ipynb has this correct with elif. Dormant since the getdist files already exist on disk, but would bite on a fresh rerun.

[LisaGoh]

Thank you! Okie will look into adding the separate 1D posteriors