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>

Library/Config/MonitorConfigManager.cs

@@ -126,4 +126,57 @@ public static class MonitorConfigManager
     {
         _cachedConfig = null;
     }
+
+    /// <summary>
+    /// Save a discovered port that the monitor didn't report in its possible values.
+    /// This ensures ports like DisplayPort-1 are remembered even if the monitor firmware doesn't list them.
+    /// </summary>
+    public static void AddDiscoveredPort(string serialNumber, string monitorName, int vcpValue, string defaultName)
+    {
+        var config = Load();
+        var monitorConfig = config.Monitors.FirstOrDefault(m => m.SerialNumber == serialNumber);
+
+        if (monitorConfig == null)
+        {
+            monitorConfig = new MonitorConfig { SerialNumber = serialNumber, MonitorName = monitorName };
+            config.Monitors.Add(monitorConfig);
+        }
+
+        // Check if port already exists
+        if (monitorConfig.Ports.Any(p => p.VcpValue == vcpValue))
+            return;
+
+        // Add the discovered port
+        monitorConfig.Ports.Add(new PortConfig
+        {
+            VcpValue = vcpValue,
+            DefaultName = defaultName,
+            CustomLabel = "",
+            IsHidden = false,
+            ShowInQuickSwitch = false
+        });
+
+        Save(config);
+    }
+
+    /// <summary>
+    /// Get any discovered ports from config that the monitor didn't report.
+    /// </summary>
+    public static List<InputSourceOption> GetDiscoveredPorts(string serialNumber, List<InputSourceOption> reportedOptions)
+    {
+        var discovered = new List<InputSourceOption>();
+        var monitorConfig = GetMonitorConfig(serialNumber);
+
+        foreach (var port in monitorConfig.Ports)
+        {
+            // If this port isn't in the reported options, it's a discovered port
+            if (!reportedOptions.Any(o => o.Value == port.VcpValue))
+            {
+                var name = !string.IsNullOrWhiteSpace(port.CustomLabel) ? port.CustomLabel : port.DefaultName;
+                discovered.Add(new InputSourceOption(port.VcpValue, name));
+            }
+        }
+
+        return discovered;
+    }
 }