Interesting idea, I know there's the fsdir [0] table-valued function / module that allows loading from disk, so it should be possible to modify that or hard-code base list of paths or something
[0] https://sqlite.org/src/file/ext/misc/fileio.c, it allows you to read a directory recursively in the cli (`select * from fsdir("./");`)
Edit: It allows upwards traversals (`select * from fsdir("../../../../etc/passwd");`), so beware
Wow, I didn't know about that one. SQLite never ceases to surprise.
I'm sticking with the Python bundled sqlite3 though so I'm not in a good place to take advantage of that one.
It's probably out of scope for you, but I've used the 'vtfunc' module [0] for a similar purpose actually.
[0] https://github.com/coleifer/sqlite-vtfunc