chore: update service collection extensions and NLWebService for improved maintainability

Author: jongalloway

src/NLWebNet/Extensions/ServiceCollectionExtensions.cs

@@ -39,11 +39,8 @@ public static IServiceCollection AddNLWebNet(this IServiceCollection services, A
         services.AddScoped<IResultGenerator, ResultGenerator>();
         services.AddScoped<IToolSelector, ToolSelector>();
 
-        // Register Advanced Tool System
-        if (!services.Any(service => service.ServiceType == typeof(IAdvancedToolService)))
-        {
-            services.AddAdvancedToolSystem();
-        }
+        // Register Advanced Tool System (idempotent)
+        services.AddAdvancedToolSystem();
 
         // Register MCP services
         services.AddScoped<IMcpService, McpService>();        // Register default data backend (can be overridden)

src/NLWebNet/Services/NLWebService.cs

@@ -117,7 +117,7 @@ public async Task<NLWebResponse> ProcessRequestAsync(NLWebRequest request, Cance
             _logger.LogDebug("ProcessQueryAsync complete for QueryId={QueryId}", queryId);
 
             // Check if tool execution is available and enabled
-            var toolResponse = await HandleToolSelectionAsync(request, queryId, cancellationToken);
+            var toolResponse = await TryExecuteToolAsync(request, queryId, cancellationToken);
             if (toolResponse != null)
             {
                 return toolResponse;