Initial commit: SpdUp Windows Gaming Booster v1.0.0

- .NET 8 WPF app with full MVVM architecture
- One-click boost: CPU, RAM, GPU, network, services, timer resolution
- Real-time system monitor (LibreHardwareMonitor)
- Auto game detection (30+ games)
- RAM optimizer with kernel-level cleanup
- Network optimizer (TCP registry tweaks)
- Service manager, process manager, shader cache cleaner
- Desktop widget overlay
- Debug log viewer
- Custom dark gaming theme with trans pride colors
- 84 unit tests (xUnit)
- Inno Setup installer script
- Landing page website

Core/RelayCommand.cs

@@ -0,0 +1,56 @@
+using System.Windows.Input;
+
+namespace SpdUp.Core;
+
+/// <summary>
+/// A basic ICommand implementation that delegates to Action/Func.
+/// </summary>
+public sealed class RelayCommand : ICommand
+{
+    private readonly Action<object?> _execute;
+    private readonly Func<object?, bool>? _canExecute;
+
+    public RelayCommand(Action<object?> execute, Func<object?, bool>? canExecute = null)
+    {
+        _execute = execute ?? throw new ArgumentNullException(nameof(execute));
+        _canExecute = canExecute;
+    }
+
+    public RelayCommand(Action execute, Func<bool>? canExecute = null)
+        : this(_ => execute(), canExecute is null ? null : _ => canExecute()) { }
+
+    public event EventHandler? CanExecuteChanged
+    {
+        add => CommandManager.RequerySuggested += value;
+        remove => CommandManager.RequerySuggested -= value;
+    }
+
+    public bool CanExecute(object? parameter) => _canExecute?.Invoke(parameter) ?? true;
+    public void Execute(object? parameter) => _execute(parameter);
+
+    public void RaiseCanExecuteChanged() => CommandManager.InvalidateRequerySuggested();
+}
+
+/// <summary>
+/// Typed relay command.
+/// </summary>
+public sealed class RelayCommand<T> : ICommand
+{
+    private readonly Action<T?> _execute;
+    private readonly Func<T?, bool>? _canExecute;
+
+    public RelayCommand(Action<T?> execute, Func<T?, bool>? canExecute = null)
+    {
+        _execute = execute ?? throw new ArgumentNullException(nameof(execute));
+        _canExecute = canExecute;
+    }
+
+    public event EventHandler? CanExecuteChanged
+    {
+        add => CommandManager.RequerySuggested += value;
+        remove => CommandManager.RequerySuggested -= value;
+    }
+
+    public bool CanExecute(object? parameter) => _canExecute?.Invoke((T?)parameter) ?? true;
+    public void Execute(object? parameter) => _execute((T?)parameter);
+}