Use abstract-to-meta to make it easier to write abstracts

Writting the batract section in the yaml is a bit cumbersome, it's not clear how to include inline R code, and RStudio auto indent feature doesn't recognise it properly. Recently I found out about the abstract-to-meta lua filter which allows the user to write the abstract as part of the body and then moves that to the metadata :

https://github.com/pandoc/lua-filters/tree/master/abstract-to-meta

It works like a charm. With it it's even possible to write the abstract as the last section of the document, which would make it even more natural to include results from the analysis.

Would you consider transitioning templates into using this filter?

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Start by reviewing the repository's article templates and how their YAML abstract fields are currently defined. Compare that structure with Pandoc's abstract-to-meta Lua filter, then verify that migrated templates still support inline R and preserve the expected abstract output; done means the templates use the filter without losing existing behavior.