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/Logger.cs

@@ -0,0 +1,71 @@
+using System.IO;
+
+namespace SpdUp.Core;
+
+/// <summary>
+/// Application-wide logging service with live event for UI consumption.
+/// </summary>
+public static class Logger
+{
+    private static readonly object _lock = new();
+    private static readonly string _logDir = Path.Combine(
+        Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "SpdUp", "Logs");
+
+    /// <summary>Fired on every log write – subscribers receive the formatted line.</summary>
+    public static event Action<string>? LogWritten;
+
+    static Logger()
+    {
+        Directory.CreateDirectory(_logDir);
+    }
+
+    private static string LogFile => Path.Combine(_logDir, $"SpdUp_{DateTime.Now:yyyy-MM-dd}.log");
+
+    public static void Info(string message) => Write("INFO", message);
+    public static void Warn(string message) => Write("WARN", message);
+    public static void Error(string message, Exception? ex = null)
+    {
+        var msg = ex is null ? message : $"{message} | {ex.GetType().Name}: {ex.Message}\n{ex.StackTrace}";
+        Write("ERROR", msg);
+    }
+
+    private static void Write(string level, string message)
+    {
+        var line = $"[{DateTime.Now:yyyy-MM-dd HH:mm:ss.fff}] [{level}] {message}";
+        lock (_lock)
+        {
+            try
+            {
+                File.AppendAllText(LogFile, line + Environment.NewLine);
+            }
+            catch
+            {
+                // Swallow – logging must never crash the app.
+            }
+        }
+
+        // Notify UI subscribers
+        try { LogWritten?.Invoke(line); } catch { }
+
+#if DEBUG
+        System.Diagnostics.Debug.WriteLine(line);
+#endif
+    }
+
+    /// <summary>
+    /// Removes log files older than the specified number of days.
+    /// </summary>
+    public static void PurgeOldLogs(int keepDays = 14)
+    {
+        try
+        {
+            var cutoff = DateTime.Now.AddDays(-keepDays);
+            foreach (var file in Directory.GetFiles(_logDir, "SpdUp_*.log"))
+            {
+                if (File.GetCreationTime(file) < cutoff)
+                    File.Delete(file);
+            }
+        }
+        catch { /* best-effort */ }
+    }
+}