GitHub has a handy keyboard shortcut I use all the time: on any page with a ref in the URL, you can press "y" and it canonicalizes the URL.
E.g.:
https://tangled.org/mitchellh.com/test/blob/main/.tangled/workflows/test.yml
would replace "mitchellh.com" with the did and "main" with the SHA (and maybe "test" with the did in the future too).
Its very good for sharing permalinks with people.
thanks for the report! this has now been implemented, you can hit
yon any<repo>/treeor<repo>/bloblink to be redirected to a permalink. it presently replaces a repository identifier such asmitchellh.com/testwith itsrepoDID, so the final URL is of the formtangled.org/<repoDID>/blob/<ref>/path#line.