Add Debug page and fix BLE communication issues

Major changes:
- Added Debug tab with real-time message logging and hex viewer
- Implemented timed data logging ($UMTDL command) per API v1.3
- Fixed BLE message parsing to handle notifications without line endings
- Added Schema 2 support (22-field timed logging packets)
- Updated Maglink BLE UUIDs (fff0/fff1/fff2)
- Added connection timeout (10s) to prevent hanging on unavailable devices
- Added connection status display and manual push-button logging trigger
- Improved retry logging with attempt numbers and delays
- Added console window allocation for Windows debug output
- Added BLE disconnect on app close

Bug fixes:
- Fixed device name filtering for Maglink (ML-* prefix)
- Fixed RtkGps enum reference in DeviceScanViewModel
- Fixed DebugMessage namespace (moved to Models)

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

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

FieldLogger/Services/DeviceConnectionManager.cs

@@ -126,6 +126,7 @@ public sealed partial class DeviceConnectionManager : ObservableObject
         {
             try
             {
+                _logger.LogInformation("{Kind} connection attempt {Attempt}", kind, attempt + 1);
                 await BleScanner.EnsurePermissionsAsync();
                 if (kind == DeviceKind.Locator)
                     await _locator.ConnectAsync(id.Value, cts.Token);
@@ -133,19 +134,25 @@ public sealed partial class DeviceConnectionManager : ObservableObject
                     await _gps.ConnectAsync(id.Value, cts.Token);
 
                 SetState(kind, ConnectionState.Connected);
-                _logger.LogInformation("{Kind} connected", kind);
+                _logger.LogInformation("{Kind} connected successfully", kind);
                 return;
             }
             catch (OperationCanceledException)
             {
+                _logger.LogInformation("{Kind} connection cancelled", kind);
                 return;
             }
             catch (Exception ex)
             {
-                _logger.LogWarning(ex, "{Kind} connect attempt {Attempt} failed", kind, attempt + 1);
+                _logger.LogWarning(ex, "{Kind} connect attempt {Attempt} failed: {Message}", kind, attempt + 1, ex.Message);
                 var delay = RetryDelays[Math.Min(attempt, RetryDelays.Length - 1)];
+                _logger.LogInformation("{Kind} retrying in {Delay}s...", kind, delay.TotalSeconds);
                 try { await Task.Delay(delay, cts.Token); }
-                catch (OperationCanceledException) { return; }
+                catch (OperationCanceledException)
+                {
+                    _logger.LogInformation("{Kind} retry cancelled", kind);
+                    return;
+                }
             }
         }
     }