Implement adaptive Android shell and safe navigation (#102)

apple/Sources/App/IronStorageApp.swift

@@ -1024,6 +1024,7 @@ private final class ShellViewController: UITableViewController, MobileTabRoot {
         case .ready: page.systemImage
         case .locked: "lock.fill"
         case .error: "exclamationmark.triangle"
+        case .stale: "arrow.clockwise"
         }
     }
 }