Couldn't find this particular topic elsewhere... When I go to Main Page > Libraries (or Bundles), I see what looks like orphaned code, but I'm not 100% certain they're not being used by other apps or drivers.
Judging from this screenshot, does it look safe to REMOVE? (If not, how do I tell?)
Bundles can be removed, as far as I know. The contents are placed into the respective locations during the import. After that, the bundle itself isn't used.
I don't have knowledge of Libraries... for Apps and Driver Code, attempted deletes will fail if the code is in use.
On one of my hubs, where I have your HPM Manifest Generator installed, I deleted the corresponding Library just now. No warning, so I think that yes, that's a valid feature request for @gopher.ny
(I thought ahead and grabbed the import URL before the delete and was able to get it re-added quite easily.)