As attachments.
Upload your files as attachments and then access them by going to https://you.cloudant.com/dbname/documentid/name_of_file.html
.
Tools like erica (a bigger list of options here) will do that for you. With them, you just need to put all your HTML, CSS and JS files in a folder and the tool will save them all as attachments of a Design Document, then that bundle will become your Couchapp.
(After that you just have to mix some ajax calls to _views
and pure docs with links to _list
and _show
functions -- if you want -- and you'll be a complete couchapper).