docs: complete XML-doc coverage and strip internal tracking IDs from code comments

Resolve all CommentChecker findings across the gateway server, worker, tests,
and .NET client (314 -> 0 real issues): add missing <returns>/<summary>/<param>
on public and test members, convert Stream/interface overrides to <inheritdoc/>,
and remove internal task/issue tracking IDs (SEC-*, IPC-*, WRK-*, GWC-*, TST-*,
Client.Dotnet-*) from shipped code documentation while preserving the design
rationale prose. Shipped comments should not carry internal bookkeeping, and
complete XML docs keep the analyzer/TreatWarningsAsErrors gate and generated API
docs clean. The 6 remaining flags are heuristic false positives (MD5, UTC-4,
capacity-1, near-1601) left intact so real documentation is not corrupted.

Claude-Session: https://claude.ai/code/session_01DMXXvNuPekkkrTEyPNxEkW

clients/dotnet/ZB.MOM.WW.MxGateway.Client/MxValueExtensions.cs

@@ -14,6 +14,7 @@ public static class MxValueExtensions
     /// Converts a boolean value to an MxValue with MxDataType.Boolean.
     /// </summary>
     /// <param name="value">Scalar boolean value to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped boolean.</returns>
     public static MxValue ToMxValue(this bool value)
     {
         return new MxValue
@@ -28,6 +29,7 @@ public static class MxValueExtensions
     /// Converts a 32-bit integer value to an MxValue with MxDataType.Integer.
     /// </summary>
     /// <param name="value">32-bit integer value to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped integer.</returns>
     public static MxValue ToMxValue(this int value)
     {
         return new MxValue
@@ -42,6 +44,7 @@ public static class MxValueExtensions
     /// Converts a 64-bit integer value to an MxValue with MxDataType.Integer.
     /// </summary>
     /// <param name="value">64-bit integer value to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped integer.</returns>
     public static MxValue ToMxValue(this long value)
     {
         return new MxValue
@@ -56,6 +59,7 @@ public static class MxValueExtensions
     /// Converts a single-precision floating-point value to an MxValue with MxDataType.Float.
     /// </summary>
     /// <param name="value">Single-precision floating-point value to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped value.</returns>
     public static MxValue ToMxValue(this float value)
     {
         return new MxValue
@@ -70,6 +74,7 @@ public static class MxValueExtensions
     /// Converts a double-precision floating-point value to an MxValue with MxDataType.Double.
     /// </summary>
     /// <param name="value">Double-precision floating-point value to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped value.</returns>
     public static MxValue ToMxValue(this double value)
     {
         return new MxValue
@@ -84,6 +89,7 @@ public static class MxValueExtensions
     /// Converts a string value to an MxValue with MxDataType.String.
     /// </summary>
     /// <param name="value">String value to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped string.</returns>
     public static MxValue ToMxValue(this string value)
     {
         ArgumentNullException.ThrowIfNull(value);
@@ -100,6 +106,7 @@ public static class MxValueExtensions
     /// Converts a DateTimeOffset value to an MxValue with MxDataType.Time.
     /// </summary>
     /// <param name="value">DateTimeOffset value to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped timestamp.</returns>
     public static MxValue ToMxValue(this DateTimeOffset value)
     {
         return new MxValue
@@ -114,6 +121,7 @@ public static class MxValueExtensions
     /// Converts a DateTime value to an MxValue with MxDataType.Time.
     /// </summary>
     /// <param name="value">DateTime value to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped timestamp.</returns>
     public static MxValue ToMxValue(this DateTime value)
     {
         return new DateTimeOffset(
@@ -127,6 +135,7 @@ public static class MxValueExtensions
     /// Converts a boolean array to an MxValue with MxDataType.Boolean.
     /// </summary>
     /// <param name="values">Array of boolean values to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped array.</returns>
     public static MxValue ToMxValue(this IReadOnlyList<bool> values)
     {
         ArgumentNullException.ThrowIfNull(values);
@@ -145,6 +154,7 @@ public static class MxValueExtensions
     /// Converts a 32-bit integer array to an MxValue with MxDataType.Integer.
     /// </summary>
     /// <param name="values">Array of 32-bit integer values to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped array.</returns>
     public static MxValue ToMxValue(this IReadOnlyList<int> values)
     {
         ArgumentNullException.ThrowIfNull(values);
@@ -163,6 +173,7 @@ public static class MxValueExtensions
     /// Converts a 64-bit integer array to an MxValue with MxDataType.Integer.
     /// </summary>
     /// <param name="values">Array of 64-bit integer values to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped array.</returns>
     public static MxValue ToMxValue(this IReadOnlyList<long> values)
     {
         ArgumentNullException.ThrowIfNull(values);
@@ -181,6 +192,7 @@ public static class MxValueExtensions
     /// Converts a single-precision floating-point array to an MxValue with MxDataType.Float.
     /// </summary>
     /// <param name="values">Array of single-precision floating-point values to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped array.</returns>
     public static MxValue ToMxValue(this IReadOnlyList<float> values)
     {
         ArgumentNullException.ThrowIfNull(values);
@@ -199,6 +211,7 @@ public static class MxValueExtensions
     /// Converts a double-precision floating-point array to an MxValue with MxDataType.Double.
     /// </summary>
     /// <param name="values">Array of double-precision floating-point values to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped array.</returns>
     public static MxValue ToMxValue(this IReadOnlyList<double> values)
     {
         ArgumentNullException.ThrowIfNull(values);
@@ -217,6 +230,7 @@ public static class MxValueExtensions
     /// Converts a string array to an MxValue with MxDataType.String.
     /// </summary>
     /// <param name="values">Array of string values to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped array.</returns>
     public static MxValue ToMxValue(this IReadOnlyList<string> values)
     {
         ArgumentNullException.ThrowIfNull(values);
@@ -235,6 +249,7 @@ public static class MxValueExtensions
     /// Converts a DateTimeOffset array to an MxValue with MxDataType.Time.
     /// </summary>
     /// <param name="values">Array of DateTimeOffset values to wrap.</param>
+    /// <returns>An <see cref="MxValue"/> carrying the wrapped array.</returns>
     public static MxValue ToMxValue(this IReadOnlyList<DateTimeOffset> values)
     {
         ArgumentNullException.ThrowIfNull(values);
@@ -253,6 +268,7 @@ public static class MxValueExtensions
     /// Gets the projection kind (field name) of the given MxValue's current oneof value.
     /// </summary>
     /// <param name="value">The MxValue whose oneof projection kind is returned.</param>
+    /// <returns>The field name of the value's current oneof projection (e.g. "boolValue").</returns>
     public static string GetProjectionKind(this MxValue value)
     {
         ArgumentNullException.ThrowIfNull(value);
@@ -276,6 +292,7 @@ public static class MxValueExtensions
     /// Converts an MxValue to a CLR object; returns the boxed value or null for null MxValues.
     /// </summary>
     /// <param name="value">The MxValue to convert.</param>
+    /// <returns>The boxed CLR value, or <see langword="null"/> if the MxValue is null.</returns>
     public static object? ToClrValue(this MxValue value)
     {
         ArgumentNullException.ThrowIfNull(value);
@@ -299,6 +316,7 @@ public static class MxValueExtensions
     /// Converts an MxArray to a CLR array; returns null if the array does not have a known element type.
     /// </summary>
     /// <param name="array">The MxArray to convert.</param>
+    /// <returns>The CLR array, or <see langword="null"/> if the element type is not known.</returns>
     public static object? ToClrArrayValue(this MxArray array)
     {
         ArgumentNullException.ThrowIfNull(array);
@@ -328,6 +346,7 @@ public static class MxValueExtensions
     /// <param name="variantType">Variant type string (e.g., "VT_BSTR").</param>
     /// <param name="rawDiagnostic">Diagnostic string describing the raw value.</param>
     /// <param name="rawDataType">Optional MXAccess data type override.</param>
+    /// <returns>An <see cref="MxValue"/> with MxDataType.Unknown carrying the raw payload.</returns>
     public static MxValue ToRawMxValue(
         byte[] value,
         string variantType,