[Meta] custom post-hoc ensembling

Hi @LennartPurucker and @Innixma

Are there any examples or recommended patterns for implementing custom post-hoc ensembling with tabarena?

I recently came across two interesting papers that I’d like to reimplement/check:
https://arxiv.org/pdf/2508.05144
https://arxiv.org/pdf/2512.22284

Thanks in advance for any pointers or guidance.

The issue identifies no files, tests, or entry points. First clarify which custom post-hoc ensembling workflow should be supported and whether the expected outcome is documentation, examples, or an implementation; done should include a concrete, tested pattern for reproducing the referenced approaches in tabarena.

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