nostr:npub1yzvxlwp7wawed5vgefwfmugvumtp8c8t0etk3g8sky4n0ndvyxesnxrf8q is there a public github repo? Is Yakihonnne FOSS?

When I tap the back button, Yakihonne suggests I open Damus. Is the intended behavior? https://image.nostr.build/4ec382ab006d0e609cde3b2ed2b1e84abe03b1ea16e58b782b3fa542ad14320b.jpg