AI seeded comments from robch and then edited by stephentoub (#238)

* AI generated `///` comment updates

* Fix compilation issues

* Fix incorrect XML comment structure

* Update all Client comments

* Update all Configuration comments

* Update all Messages comments

* Update all Transport comments

* Update all Types comments

* Update all Server comments

* Undo some commenting

---------

Co-authored-by: Stephen Toub <stoub@microsoft.com>

src/ModelContextProtocol/Configuration/IMcpServerBuilder.cs

@@ -1,14 +1,25 @@
-using ModelContextProtocol.Server;
+using ModelContextProtocol.Server;
 
 namespace Microsoft.Extensions.DependencyInjection;
 
 /// <summary>
-/// Builder for configuring <see cref="IMcpServer"/> instances.
+/// Provides a builder for configuring <see cref="IMcpServer"/> instances.
 /// </summary>
+/// <remarks>
+/// <para>
+/// The <see cref="IMcpServerBuilder"/> interface provides a fluent API for configuring Model Context Protocol (MCP) servers
+/// when using dependency injection. It exposes methods for registering tools, prompts, custom request handlers,
+/// and server transports, allowing for comprehensive server configuration through a chain of method calls.
+/// </para>
+/// <para>
+/// The builder is obtained from the <see cref="McpServerServiceCollectionExtensions.AddMcpServer"/> extension 
+/// method and provides access to the underlying service collection via the <see cref="Services"/> property.
+/// </para>
+/// </remarks>
 public interface IMcpServerBuilder
 {
     /// <summary>
-    /// Gets the service collection.
+    /// Gets the associated service collection.
     /// </summary>
     IServiceCollection Services { get; }
 }