Stemify iOS 1.1 and WebUI updates, repo restructure into desktop/ios/server/web

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

ios/Stemify/CarPlay/CarPlayScene.swift

@@ -172,7 +172,7 @@ final class CarPlayScene: UIResponder, CPTemplateApplicationSceneDelegate, CPNow
                 guard let self else { return }
                 let label = self.g.nowPlaying.nextMix.label
                 self.g.nowPlaying.cycleMix()
-                self.alert("Mix: \(label)")
+                self.alert(label)
             })
         }
         let shuffle = CPNowPlayingShuffleButton { [weak self] _ in self?.g.playback.toggleShuffle() }