feat: redesign Bench page with Fluent card layout and radial advance monitor

Three-column layout replacing the old HMI grid:
- BenchRpmCommandCard: inline numeric input, 2×4 preset grid, Start/Stop
- BenchActuatorsCard: direction toggle, oil pump, temperature PID, misc relays
  with FluentStateToggle showing checked state via AccentFillColor
- BenchLiveDataCard: 2×5 KPI tiles (RPM, P1, P2, Q-Delivery, Q-Over, temps)
- BenchChartsCard: 2×2 compact chart grid (Delivery, Over, P1, P2)
- AdvanceMonitorCard: RadialAngleGauge custom FrameworkElement + PSG/INJ readouts,
  Δ° lock offset input, Zero PSG / Zero INJ buttons

Supporting changes:
- AngleDisplayViewModel: promote _currentManualDegrees, _isLockSet to
  [ObservableProperty]; add PsgRelativeDegrees, InjEncoderDegreesValue,
  TargetLockAngle, IsRunningMode (29/31 hysteresis); computed PrimaryGaugeAngle,
  TargetAngleForGauge, SecondaryGaugeAngle
- BenchControlViewModel: add IsDirectionLeft computed property,
  SetDirectionRightCommand, SetDirectionLeftCommand, ApplyRpmCommand
- FlowmeterChartView: add IsCompact DP (false default) for 90px compact height
- Styles.xaml: add IsChecked trigger to FluentStateToggle (accent fill + white text)
- Strings.en/es.xaml: add all new card and actuator string keys

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

Views/UserControls/BenchLiveDataCard.xaml.cs

@@ -0,0 +1,14 @@
+using System.Windows.Controls;
+
+namespace HC_APTBS.Views.UserControls
+{
+    /// <summary>
+    /// Fluent card with two rows of KPI tiles showing bench live readings
+    /// (RPM, pressures, flow, temperatures).
+    /// DataContext = <see cref="HC_APTBS.ViewModels.Pages.BenchPageViewModel"/>.
+    /// </summary>
+    public partial class BenchLiveDataCard : UserControl
+    {
+        public BenchLiveDataCard() => InitializeComponent();
+    }
+}