Release v1.0.3: Enhanced NDEF reading and UX improvements

Major Improvements:
- Implement exclusive card access with retry logic and exponential backoff
- Fix Type 4 NDEF length parsing (now correctly reads NTAG424 and similar chips)
- Add enhanced card type detection (Type 2 vs Type 4)
- Implement chunked reading for large NDEF messages
- Add proper TLV parsing for Type 2 tags

Bug Fixes:
- Fix WPF window lifecycle issue (visual tree error on reopen)
- Fix NDEF length parsing incorrectly detecting extended format
- Correct data offset for Type 4 tag reading

New Features:
- Multi-line log selection and copy to clipboard
- Context menu with Copy Selected Lines, Copy All, Select All
- Runtime version roll-forward support (.NET 8.0.x compatibility)

Technical Details:
- Type 4 tags now use correct 2-byte NLEN field per NFC Forum spec
- Removed incorrect 3-byte extended length detection
- Window now hides instead of closing for proper tray app behavior
- Connection attempts exclusive access first, falls back to shared mode
- Status timeout increased from 0ms to 1000ms for better card detection

NfcActions/App.xaml.cs

@@ -24,6 +24,7 @@ public partial class App : Application
     private ActionService? _actionService;
     private LogService? _logService;
     private MainViewModel? _viewModel;
+    private System.ComponentModel.CancelEventHandler? _windowClosingHandler;
 
     public App()
     {
@@ -121,16 +122,44 @@ public partial class App : Application
 
     private void ShowMainWindow()
     {
-        if (_mainWindow != null)
+        // If window was closed, recreate it
+        if (_mainWindow == null || !_mainWindow.IsLoaded)
         {
-            _mainWindow.Show();
-            _mainWindow.WindowState = WindowState.Normal;
-            _mainWindow.Activate();
+            if (_viewModel == null) return;
+
+            _mainWindow = new MainWindow(_viewModel);
+
+            // Handle window closing - hide instead of close
+            _windowClosingHandler = (s, e) =>
+            {
+                e.Cancel = true;
+                if (_mainWindow != null)
+                {
+                    _mainWindow.Hide();
+                }
+            };
+
+            _mainWindow.Closing += _windowClosingHandler;
         }
+
+        _mainWindow.Show();
+        _mainWindow.WindowState = WindowState.Normal;
+        _mainWindow.Activate();
     }
 
     private void ExitApplication()
     {
+        // Properly close the main window if it exists
+        if (_mainWindow != null)
+        {
+            // Remove the cancel handler so the window can actually close
+            if (_windowClosingHandler != null)
+            {
+                _mainWindow.Closing -= _windowClosingHandler;
+            }
+            _mainWindow.Close();
+        }
+
         _notifyIcon?.Dispose();
         _customIcon?.Dispose();
         _cardReaderService?.Dispose();