It took longer than expected, but the navbar has been adjusted such that it'll be more easily integratable across the other services. I'll be starting with Cinny since its dev environment is by far the easiest to setup - although I really hope to get Zitadel setup in dev really soon!
Also, I added matrix.to links on all local profiles. That'll be especially cool once Cinny itself supports matrix.to links, which should be soon!