Implement adaptive Android shell and safe navigation (#102)

crates/storage/src/mobile.rs

@@ -105,6 +105,7 @@ pub enum MobileShellState {
     Ready,
     Locked,
     Error,
+    Stale,
 }
 
 #[derive(Clone, Debug, Eq, PartialEq)]
@@ -250,6 +251,10 @@ fn state_copy(tab: MobileTab, state: MobileShellState, error: Option<&str>) -> (
             "IronStorage is Locked".to_owned(),
             "Authenticate to reveal protected content.".to_owned(),
         ),
+        MobileShellState::Stale => (
+            "Password Store Changed".to_owned(),
+            "Refresh to load the current repository state.".to_owned(),
+        ),
         MobileShellState::Error => (
             "IronStorage Is Unavailable".to_owned(),
             error
@@ -275,6 +280,7 @@ mod tests {
             MobileShellState::Ready,
             MobileShellState::Locked,
             MobileShellState::Error,
+            MobileShellState::Stale,
         ] {
             let shell = MobileShell::fixture(state);
             assert_eq!(shell.selected_tab(), MobileTab::Home);