docs(xmldoc): fill missing XML docs + strip tracking-ID comments across src

Adds <summary>/<param>/<returns>/<inheritdoc> where missing and removes
project bookkeeping IDs (task/tracking refs) from shipped code comments,
so the docs read cleanly and CommentChecker is quiet except for known
false positives (PLC/protocol terms, event/IEqualityComparer inheritdoc).
Doc/comment-only; no logic changed; solution builds clean.

src/Core/ZB.MOM.WW.OtOpcUa.Configuration/Validation/DraftValidator.cs

@@ -5,7 +5,7 @@ using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
 namespace ZB.MOM.WW.OtOpcUa.Configuration.Validation;
 
 /// <summary>
-///     Managed-code pre-publish validator per decision #91. Complements the structural checks in
+///     Managed-code pre-publish validator. Complements the structural checks in
 ///     <c>sp_ValidateDraft</c> — this layer owns schema validation for JSON columns, UNS segment
 ///     regex, EquipmentId derivation, cross-cluster checks, and anything else that's uncomfortable
 ///     to express in T-SQL. Returns every failing rule in one pass (decision: surface all errors,
@@ -21,6 +21,7 @@ public static class DraftValidator
     ///     Validates a draft snapshot and returns all validation errors found in a single pass.
     /// </summary>
     /// <param name="draft">The draft snapshot to validate.</param>
+    /// <returns>Every validation error found; empty when the draft is valid.</returns>
     public static IReadOnlyList<ValidationError> Validate(DraftSnapshot draft)
     {
         var errors = new List<ValidationError>();
@@ -204,8 +205,9 @@ public static class DraftValidator
         }
     }
 
-    /// <summary>Decision #125: EquipmentId = 'EQ-' + lowercase first 12 hex chars of the UUID.</summary>
+    /// <summary>EquipmentId = 'EQ-' + lowercase first 12 hex chars of the UUID.</summary>
     /// <param name="uuid">The equipment UUID to derive the ID from.</param>
+    /// <returns>The derived <c>EQ-</c>-prefixed EquipmentId.</returns>
     public static string DeriveEquipmentId(Guid uuid) =>
         "EQ-" + uuid.ToString("N")[..12].ToLowerInvariant();
 
@@ -222,7 +224,7 @@ public static class DraftValidator
     }
 
     /// <summary>
-    ///     Phase 6.3 Stream A.2 + task #148 part 2 — managed pre-publish guard for cluster
+    ///     Managed pre-publish guard for cluster
     ///     topology vs. <see cref="ServerCluster.RedundancyMode"/>. The SQL
     ///     <c>CK_ServerCluster_RedundancyMode_NodeCount</c> CHECK already enforces the
     ///     (NodeCount, RedundancyMode) pair on the row itself, but it cannot see the
@@ -240,6 +242,8 @@ public static class DraftValidator
     /// </remarks>
     /// <param name="cluster">The server cluster to validate.</param>
     /// <param name="clusterNodes">The cluster nodes to validate against the cluster configuration.</param>
+    /// <returns>Every failing topology rule found; empty when the cluster's declared and enabled-node
+    /// topology is consistent with its <see cref="ServerCluster.RedundancyMode"/>.</returns>
     public static IReadOnlyList<ValidationError> ValidateClusterTopology(
         ServerCluster cluster,
         IReadOnlyList<ClusterNode> clusterNodes)
@@ -273,7 +277,7 @@ public static class DraftValidator
                 cluster.ClusterId));
 
         // v2: the v1 "exactly one Primary per cluster" invariant is gone. RedundancyRole was
-        // dropped in Task 14d; in v2 the Akka cluster's role-leader-of-"driver" elects the
+        // dropped; in v2 the Akka cluster's role-leader-of-"driver" elects the
         // primary at runtime, so there is no static configuration to validate here.
 
         return errors;