bug: cleaning generated files leaves out folders sometimes

The title must be making this clear, but essentially, atleast with /blog when I tested, it leaves out the directory. Currently what directories/files are supposed to get deleted are kinda hard coded, but this can be made very flexible.

*NOTES* of the maintainer:
I was wondering if making a text file or .csv of generated file/filepaths would help, but if there's a better way go ahead!

No source file or test is named. Start by locating the cleanup logic and reproducing the omission with /blog; compare the generated paths it tracks with the directories it removes. Done means generated files and their directories, including /blog, are removed without relying on a brittle hard-coded list.

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