Desktop: show the right vault's people, leave settings on lock, say when an import fell short, and stop host names being cut to four letters

- Choosing a vault while the screen was busy went through a gate that did nothing, so the members
  panel kept showing the previous vault's people under the new name. The read now starts regardless;
  the selection generation discards answers for an earlier choice.
- Locking or signing out from Settings left the window in settings mode under the lock card, with no
  title bar to drag, minimise or close, and unlock returned to Settings. Leaving the unlocked state
  leaves Settings and closes the members panel; Escape closes that panel before leaving Settings.
- Both importers reported success when the keychain was busy and skipped the batch, or failed partway.
  ImportOutcome now carries refused hosts and why a batch stopped, and the screens say so.
- Host cards: the sync badge took 70 of 214 pixels from the name ("bastion" drew as "bast…", two k8s
  workers both as "k8s…"); it now sits on the address line. Tag chips wrap and trim inside the card.
  Keychain names trim inside their column instead of printing over TYPE, and the Security page's
  caption wraps inside its card.

src/DodoSSH.Client.Shell/ViewModels/MainWindowViewModel.cs

@@ -1795,6 +1795,10 @@ internal sealed partial class MainWindowViewModel : ObservableObject, IAsyncDisp
         ActiveSettingsPage = null;
         IsImportOpen = false;
         IsHetznerImportOpen = false;
+
+        // Drawn over Settings → Vaults. Left open, it was still up the next time Settings opened, over
+        // whichever page that was.
+        vaults.IsMembersPanelOpen = false;
         Screen = settingsReturnScreen;
         Surface = settingsReturnSurface;
     }
@@ -5107,6 +5111,14 @@ internal sealed partial class MainWindowViewModel : ObservableObject, IAsyncDisp
             Screen = ShellScreen.Hosts;
             Surface = ShellSurface.Page;
         }
+        else
+        {
+            // Settings is a mode of the unlocked window, and it brings its own title bar while the main one
+            // is hidden. Locking or signing out from it — LOCK NOW is on Preferences, sign-out on Account —
+            // left the window in settings mode under the lock card: no title bar, so nothing to drag, minimise
+            // or close, and an unlock that came back to Settings rather than to Hosts.
+            LeaveSettings();
+        }
     }
 
     /// <remarks>