Following up from #96, and thinking about how someone using the credential manager to manage multiple App identities, I found myself asking: If I have multiple framework-managed Apps installed on the same target, how would I figure out which one I want to get creds for? I don't think that there is a universal answer to that question, and I'm sure we'll learn more as we get more people using the framework, but "which installation has what permissions" seems like a good starting point.
I could also see some other possibilities for added value from caching the installation permissions, if we might want to add future features around monitoring for installations that need to accept permissions changes.