"improving" pair handler clean up and some other stuff

LightlessSync/LightlessPlugin.cs

@@ -74,6 +74,7 @@ public class LightlessPlugin : MediatorSubscriberBase, IHostedService
     private readonly DalamudUtilService _dalamudUtil;
     private readonly LightlessConfigService _lightlessConfigService;
     private readonly ServerConfigurationManager _serverConfigurationManager;
+    private readonly PairHandlerRegistry _pairHandlerRegistry;
     private readonly IServiceScopeFactory _serviceScopeFactory;
     private IServiceScope? _runtimeServiceScope;
     private Task? _launchTask = null;
@@ -81,11 +82,13 @@ public class LightlessPlugin : MediatorSubscriberBase, IHostedService
     public LightlessPlugin(ILogger<LightlessPlugin> logger, LightlessConfigService lightlessConfigService,
         ServerConfigurationManager serverConfigurationManager,
         DalamudUtilService dalamudUtil,
+        PairHandlerRegistry pairHandlerRegistry,
         IServiceScopeFactory serviceScopeFactory, LightlessMediator mediator) : base(logger, mediator)
     {
         _lightlessConfigService = lightlessConfigService;
         _serverConfigurationManager = serverConfigurationManager;
         _dalamudUtil = dalamudUtil;
+        _pairHandlerRegistry = pairHandlerRegistry;
         _serviceScopeFactory = serviceScopeFactory;
     }
 
@@ -108,12 +111,20 @@ public class LightlessPlugin : MediatorSubscriberBase, IHostedService
 
     public Task StopAsync(CancellationToken cancellationToken)
     {
+        Logger.LogDebug("Halting LightlessPlugin");
+        try
+        {
+            _pairHandlerRegistry.ResetAllHandlers();
+        }
+        catch (Exception ex)
+        {
+            Logger.LogWarning(ex, "Failed to reset pair handlers on shutdown");
+        }
+
         UnsubscribeAll();
 
         DalamudUtilOnLogOut();
 
-        Logger.LogDebug("Halting LightlessPlugin");
-
         return Task.CompletedTask;
     }