feat: redesign Pump page with Fluent card layout, bottom snackbar, and RPM chart

- Replace sub-nav + HiddenTabsTabControl with 3-column Fluent card layout:
  PumpCommandsCard (vertical ME/FBKW/PreIn sliders) + DfiCalibrationCard /
  PumpLiveDataCard (KPI tiles + RPM rolling chart + redesigned status bytes) /
  PumpIdentificationCard + DtcCard
- Add PumpTopStripView: pump selector, model badge, CAN + K-Line chips
- Move immobilizer unlock to MainWindow bottom snackbar (UnlockSnackbarView):
  auto-close on success after 3 s, persist on failure with manual Dismiss
- Redesign StatusDisplayView to 2×8 rounded 28px tiles with bit index + tooltip
- Add NullToVisibilityConverter; add SnackbarShell, PumpCard, and related styles
- Delete obsolete views: UnlockProgressDialog, UnlockPanelView,
  PumpIdentificationPanelView, PumpLiveDataView, DfiManageView,
  DtcListView, PumpControlView
- PumpPageViewModel: remove PumpSubPage enum, add RpmChart wired to Root.PumpRpm

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Views/UserControls/UnlockSnackbarView.xaml.cs

@@ -0,0 +1,54 @@
+using System;
+using System.ComponentModel;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Threading;
+using HC_APTBS.ViewModels.Dialogs;
+
+namespace HC_APTBS.Views.UserControls
+{
+    public partial class UnlockSnackbarView : UserControl
+    {
+        private DispatcherTimer? _autoHideTimer;
+
+        public UnlockSnackbarView()
+        {
+            InitializeComponent();
+            DataContextChanged += OnDataContextChanged;
+        }
+
+        private void OnDataContextChanged(object sender, DependencyPropertyChangedEventArgs e)
+        {
+            if (e.OldValue is UnlockProgressViewModel oldVm)
+                oldVm.PropertyChanged -= OnVmPropertyChanged;
+
+            if (e.NewValue is UnlockProgressViewModel newVm)
+                newVm.PropertyChanged += OnVmPropertyChanged;
+        }
+
+        private void OnVmPropertyChanged(object? sender, PropertyChangedEventArgs e)
+        {
+            if (e.PropertyName != nameof(UnlockProgressViewModel.IsSuccess)) return;
+            if (DataContext is not UnlockProgressViewModel vm) return;
+
+            if (vm.IsSuccess == true)
+            {
+                _autoHideTimer?.Stop();
+                _autoHideTimer = new DispatcherTimer { Interval = TimeSpan.FromSeconds(3) };
+                _autoHideTimer.Tick += (_, _) =>
+                {
+                    _autoHideTimer!.Stop();
+                    if (vm.CloseCommand.CanExecute(null))
+                        vm.CloseCommand.Execute(null);
+                };
+                _autoHideTimer.Start();
+            }
+        }
+
+        private void OnDismissClick(object sender, RoutedEventArgs e)
+        {
+            if (DataContext is UnlockProgressViewModel vm && vm.CloseCommand.CanExecute(null))
+                vm.CloseCommand.Execute(null);
+        }
+    }
+}