I usually download stuff through Nyaa to get .cbz files of full volumes. Of the few times I have had to get a series myself I have used Houdoku. It's similar to tachiyomi on desktop. I usually rip from Mangadex but have had to manually name folder files to eventually zip into cbz files. This may not be that helpful but just thought it plug in Houdoku to see if it helps with what you need
Edit: Lol I didn't really read your post well. Yeah, personally, I dont know of any automated solutions, sorry.