Expand XML docs across bridge and test code

tests/ZB.MOM.WW.LmxOpcUa.Tests/MxAccess/MxAccessClientMonitorTests.cs

@@ -10,12 +10,18 @@ using ZB.MOM.WW.LmxOpcUa.Tests.Helpers;
 
 namespace ZB.MOM.WW.LmxOpcUa.Tests.MxAccess
 {
+    /// <summary>
+    /// Verifies the background connectivity monitor used to reconnect the MXAccess bridge after faults or stale probes.
+    /// </summary>
     public class MxAccessClientMonitorTests : IDisposable
     {
         private readonly StaComThread _staThread;
         private readonly FakeMxProxy _proxy;
         private readonly PerformanceMetrics _metrics;
 
+        /// <summary>
+        /// Initializes the monitor test fixture with a shared STA thread, fake proxy, and metrics collector.
+        /// </summary>
         public MxAccessClientMonitorTests()
         {
             _staThread = new StaComThread();
@@ -24,12 +30,18 @@ namespace ZB.MOM.WW.LmxOpcUa.Tests.MxAccess
             _metrics = new PerformanceMetrics();
         }
 
+        /// <summary>
+        /// Disposes the monitor test fixture resources.
+        /// </summary>
         public void Dispose()
         {
             _staThread.Dispose();
             _metrics.Dispose();
         }
 
+        /// <summary>
+        /// Confirms that the monitor reconnects the client after an observed disconnect.
+        /// </summary>
         [Fact]
         public async Task Monitor_ReconnectsOnDisconnect()
         {
@@ -54,6 +66,9 @@ namespace ZB.MOM.WW.LmxOpcUa.Tests.MxAccess
             client.Dispose();
         }
 
+        /// <summary>
+        /// Confirms that the monitor can be started and stopped without throwing.
+        /// </summary>
         [Fact]
         public async Task Monitor_StopsOnCancel()
         {
@@ -69,6 +84,9 @@ namespace ZB.MOM.WW.LmxOpcUa.Tests.MxAccess
             client.Dispose();
         }
 
+        /// <summary>
+        /// Confirms that a stale probe tag triggers a reconnect when monitoring is enabled.
+        /// </summary>
         [Fact]
         public async Task Monitor_ProbeStale_ForcesReconnect()
         {
@@ -93,6 +111,9 @@ namespace ZB.MOM.WW.LmxOpcUa.Tests.MxAccess
             client.Dispose();
         }
 
+        /// <summary>
+        /// Confirms that fresh probe updates prevent unnecessary reconnects.
+        /// </summary>
         [Fact]
         public async Task Monitor_ProbeDataChange_PreventsStaleReconnect()
         {
@@ -122,6 +143,9 @@ namespace ZB.MOM.WW.LmxOpcUa.Tests.MxAccess
             client.Dispose();
         }
 
+        /// <summary>
+        /// Confirms that enabling the monitor without a probe tag does not trigger false reconnects.
+        /// </summary>
         [Fact]
         public async Task Monitor_NoProbeConfigured_NoFalseReconnect()
         {