docs: backfill XML documentation across 756 files

Adds <summary>, <param>, <typeparam>, and <inheritdoc/> tags to public
members surfaced by commentchecker — resolves 5,847 of 5,869 issues
(99.6%) across three /fixdocs passes.

tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.TwinCAT.Tests/TwinCATReadWriteTests.cs

@@ -22,6 +22,7 @@ public sealed class TwinCATReadWriteTests
 
     // ---- Read ----
 
+    /// <summary>Verifies that an unknown reference maps to BadNodeIdUnknown status.</summary>
     [Fact]
     public async Task Unknown_reference_maps_to_BadNodeIdUnknown()
     {
@@ -32,6 +33,7 @@ public sealed class TwinCATReadWriteTests
         snapshots.Single().StatusCode.ShouldBe(TwinCATStatusMapper.BadNodeIdUnknown);
     }
 
+    /// <summary>Verifies that a successful DInt read returns Good status and the correct value.</summary>
     [Fact]
     public async Task Successful_DInt_read_returns_Good_value()
     {
@@ -48,6 +50,7 @@ public sealed class TwinCATReadWriteTests
         factory.Clients[0].IsConnected.ShouldBeTrue();
     }
 
+    /// <summary>Verifies that repeated read operations reuse the same connection.</summary>
     [Fact]
     public async Task Repeat_read_reuses_connection()
     {
@@ -65,6 +68,7 @@ public sealed class TwinCATReadWriteTests
         factory.Clients[0].ConnectCount.ShouldBe(1);
     }
 
+    /// <summary>Verifies that ADS read errors are mapped via the status mapper.</summary>
     [Fact]
     public async Task Read_with_ADS_error_maps_via_status_mapper()
     {
@@ -82,6 +86,7 @@ public sealed class TwinCATReadWriteTests
         snapshots.Single().StatusCode.ShouldBe(TwinCATStatusMapper.BadNodeIdUnknown);
     }
 
+    /// <summary>Verifies that read exceptions surface as BadCommunicationError status.</summary>
     [Fact]
     public async Task Read_exception_surfaces_BadCommunicationError()
     {
@@ -95,6 +100,7 @@ public sealed class TwinCATReadWriteTests
         drv.GetHealth().State.ShouldBe(DriverState.Degraded);
     }
 
+    /// <summary>Verifies that connect failures surface BadCommunicationError and dispose the client.</summary>
     [Fact]
     public async Task Connect_failure_surfaces_BadCommunicationError_and_disposes_client()
     {
@@ -108,6 +114,7 @@ public sealed class TwinCATReadWriteTests
         factory.Clients[0].DisposeCount.ShouldBe(1);
     }
 
+    /// <summary>Verifies that batched read operations preserve the order of results.</summary>
     [Fact]
     public async Task Batched_reads_preserve_order()
     {
@@ -134,6 +141,7 @@ public sealed class TwinCATReadWriteTests
 
     // ---- Write ----
 
+    /// <summary>Verifies that non-writable tags are rejected with BadNotWritable status.</summary>
     [Fact]
     public async Task Non_writable_tag_rejected_with_BadNotWritable()
     {
@@ -146,6 +154,7 @@ public sealed class TwinCATReadWriteTests
         results.Single().StatusCode.ShouldBe(TwinCATStatusMapper.BadNotWritable);
     }
 
+    /// <summary>Verifies that successful writes log the symbol, type, and value correctly.</summary>
     [Fact]
     public async Task Successful_write_logs_symbol_type_value()
     {
@@ -163,6 +172,7 @@ public sealed class TwinCATReadWriteTests
         write.value.ShouldBe(4200);
     }
 
+    /// <summary>Verifies that ADS write errors are mapped and surfaced correctly.</summary>
     [Fact]
     public async Task Write_with_ADS_error_surfaces_mapped_status()
     {
@@ -181,6 +191,7 @@ public sealed class TwinCATReadWriteTests
         results.Single().StatusCode.ShouldBe(TwinCATStatusMapper.BadNotWritable);
     }
 
+    /// <summary>Verifies that write exceptions surface as BadCommunicationError status.</summary>
     [Fact]
     public async Task Write_exception_surfaces_BadCommunicationError()
     {
@@ -194,6 +205,7 @@ public sealed class TwinCATReadWriteTests
         results.Single().StatusCode.ShouldBe(TwinCATStatusMapper.BadCommunicationError);
     }
 
+    /// <summary>Verifies that batched write operations preserve order across mixed outcomes.</summary>
     [Fact]
     public async Task Batch_write_preserves_order_across_outcomes()
     {
@@ -223,6 +235,7 @@ public sealed class TwinCATReadWriteTests
         results[2].StatusCode.ShouldBe(TwinCATStatusMapper.BadNodeIdUnknown);
     }
 
+    /// <summary>Verifies that cancellation tokens propagate correctly during read operations.</summary>
     [Fact]
     public async Task Cancellation_propagates()
     {
@@ -239,6 +252,7 @@ public sealed class TwinCATReadWriteTests
             () => drv.ReadAsync(["X"], CancellationToken.None));
     }
 
+    /// <summary>Verifies that shutdown disposes the client correctly.</summary>
     [Fact]
     public async Task ShutdownAsync_disposes_client()
     {