TextEdit doesn't provide an option to pin documents, but because this app opens to the save location, perhaps you could ensure those documents appear at the top by either renaming them with a character or the letter "a" first (such as an asterisk so the sort order puts them on top) or moving them in a separate folder, which has a special character first in its name.
I haven't worked with .bat files for a long time so I don't recall whether a special character is allowed in its filename.
Here's another idea I figured out without renaming the files. In the Finder window where they're saved, select the first document (without opening it), and using the share menu, save it to a new Notes document (either saved on iCloud or your Mac). This will save that document as a link. Name your Notes document and pin it. Then repeat the select and share to that note for the other documents.