Add Reset and Detect buttons to Config dialog

- Reset button: clears custom labels, unhides all ports, removes discovered ports
- Detect button: tries common VCP 60 values to discover available input ports
- Version bumped to 1.1.2

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

DellMonitorControl/MainWindow.xaml.cs

@@ -181,13 +181,25 @@ public partial class MainWindow : Window
                     var inputOptions = await CMMCommand.GetInputSourceOptions(m.SerialNumber);
                     DebugLogger.Log($"  Input options count: {inputOptions.Count}");
 
+                    // Add any previously discovered ports from config
+                    var discoveredPorts = MonitorConfigManager.GetDiscoveredPorts(m.SerialNumber, inputOptions);
+                    foreach (var port in discoveredPorts)
+                    {
+                        inputOptions.Insert(0, port);
+                        DebugLogger.Log($"  Added discovered port from config: {port.Value} ({port.Name})");
+                    }
+
                     // Some monitors don't report current input in their possible values list
-                    // Add it if missing so user can see what's currently selected
+                    // Add it if missing and save to config for future
                     if (inputSource.HasValue && !inputOptions.Any(o => o.Value == inputSource.Value))
                     {
                         var currentInputName = CMMCommand.GetInputSourceName(inputSource.Value);
                         inputOptions.Insert(0, new InputSourceOption(inputSource.Value, currentInputName));
                         DebugLogger.Log($"  Added missing current input: {inputSource.Value} ({currentInputName})");
+
+                        // Save this discovered port so it appears in future even when not current
+                        MonitorConfigManager.AddDiscoveredPort(m.SerialNumber, m.MonitorName, inputSource.Value, currentInputName);
+                        DebugLogger.Log($"  Saved discovered port to config");
                     }
 
                     DebugLogger.Log($"  Getting power status...");