deprecate(lmxproxy): move all LmxProxy code, tests, and docs to deprecated/

LmxProxy is no longer needed. Moved the entire lmxproxy/ workspace, DCL
adapter files, and related docs to deprecated/. Removed LmxProxy registration
from DataConnectionFactory, project reference from DCL, protocol option from
UI, and cleaned up all requirement docs.

deprecated/lmxproxy/src-reference/ZB.MOM.WW.LmxProxy.Client/ILmxProxyClientFactory.cs

@@ -0,0 +1,150 @@
+using System;
+using System.Linq;
+using Microsoft.Extensions.Configuration;
+
+namespace ZB.MOM.WW.LmxProxy.Client
+{
+    /// <summary>
+    /// Factory interface for creating LmxProxyClient instances
+    /// </summary>
+    public interface ILmxProxyClientFactory
+    {
+        /// <summary>
+        /// Creates a new LmxProxyClient instance with default configuration
+        /// </summary>
+        /// <returns>A configured LmxProxyClient instance</returns>
+        LmxProxyClient CreateClient();
+
+        /// <summary>
+        /// Creates a new LmxProxyClient instance with custom configuration
+        /// </summary>
+        /// <param name="configurationName">Name of the configuration section to use</param>
+        /// <returns>A configured LmxProxyClient instance</returns>
+        LmxProxyClient CreateClient(string configurationName);
+
+        /// <summary>
+        /// Creates a new LmxProxyClient instance using a builder
+        /// </summary>
+        /// <param name="builderAction">Action to configure the builder</param>
+        /// <returns>A configured LmxProxyClient instance</returns>
+        LmxProxyClient CreateClient(Action<LmxProxyClientBuilder> builderAction);
+    }
+
+    /// <summary>
+    /// Default implementation of ILmxProxyClientFactory
+    /// </summary>
+    public class LmxProxyClientFactory : ILmxProxyClientFactory
+    {
+        private readonly IConfiguration _configuration;
+
+        /// <summary>
+        /// Initializes a new instance of the LmxProxyClientFactory
+        /// </summary>
+        /// <param name="configuration">Application configuration</param>
+        public LmxProxyClientFactory(IConfiguration configuration)
+        {
+            _configuration = configuration ?? throw new ArgumentNullException(nameof(configuration));
+        }
+
+        /// <summary>
+        /// Creates a new LmxProxyClient instance with default configuration
+        /// </summary>
+        /// <returns>A configured LmxProxyClient instance</returns>
+        public LmxProxyClient CreateClient()
+        {
+            return CreateClient("LmxProxy");
+        }
+
+        /// <summary>
+        /// Creates a new LmxProxyClient instance with custom configuration
+        /// </summary>
+        /// <param name="configurationName">Name of the configuration section to use</param>
+        /// <returns>A configured LmxProxyClient instance</returns>
+        public LmxProxyClient CreateClient(string configurationName)
+        {
+            IConfigurationSection section = _configuration.GetSection(configurationName);
+            if (!section.GetChildren().Any() && section.Value == null)
+            {
+                throw new InvalidOperationException($"Configuration section '{configurationName}' not found");
+            }
+
+            var builder = new LmxProxyClientBuilder();
+
+            // Configure from appsettings
+            string? host = section["Host"];
+            if (!string.IsNullOrEmpty(host))
+            {
+                builder.WithHost(host);
+            }
+
+            if (int.TryParse(section["Port"], out int port))
+            {
+                builder.WithPort(port);
+            }
+
+            string? apiKey = section["ApiKey"];
+            if (!string.IsNullOrEmpty(apiKey))
+            {
+                builder.WithApiKey(apiKey);
+            }
+
+            if (TimeSpan.TryParse(section["Timeout"], out TimeSpan timeout))
+            {
+                builder.WithTimeout(timeout);
+            }
+
+            // Retry configuration
+            IConfigurationSection? retrySection = section.GetSection("Retry");
+            if (retrySection != null && (retrySection.GetChildren().Any() || retrySection.Value != null))
+            {
+                if (int.TryParse(retrySection["MaxAttempts"], out int maxAttempts) &&
+                    TimeSpan.TryParse(retrySection["Delay"], out TimeSpan retryDelay))
+                {
+                    builder.WithRetryPolicy(maxAttempts, retryDelay);
+                }
+            }
+
+            // SSL configuration
+            bool useSsl = section.GetValue<bool>("UseSsl");
+            if (useSsl)
+            {
+                string? certificatePath = section["CertificatePath"];
+                builder.WithSslCredentials(certificatePath);
+            }
+
+            // Metrics configuration
+            if (section.GetValue<bool>("EnableMetrics"))
+            {
+                builder.WithMetrics();
+            }
+
+            // Correlation ID configuration
+            string? correlationHeader = section["CorrelationIdHeader"];
+            if (!string.IsNullOrEmpty(correlationHeader))
+            {
+                builder.WithCorrelationIdHeader(correlationHeader);
+            }
+
+            // Logger is optional - don't set a default one
+
+            return builder.Build();
+        }
+
+        /// <summary>
+        /// Creates a new LmxProxyClient instance using a builder
+        /// </summary>
+        /// <param name="builderAction">Action to configure the builder</param>
+        /// <returns>A configured LmxProxyClient instance</returns>
+        public LmxProxyClient CreateClient(Action<LmxProxyClientBuilder> builderAction)
+        {
+            ArgumentNullException.ThrowIfNull(builderAction);
+
+            var builder = new LmxProxyClientBuilder();
+            builderAction(builder);
+
+            // Logger is optional - caller can set it via builderAction if needed
+
+            return builder.Build();
+        }
+    }
+}