Fix audit findings for coverage, architecture checks, and XML docs

tests/CBDD.Tests/CollectionIndexManagerAndDefinitionTests.cs

@@ -7,6 +7,9 @@ namespace ZB.MOM.WW.CBDD.Tests;
 
 public class CollectionIndexManagerAndDefinitionTests
 {
+    /// <summary>
+    /// Tests find best index should prefer unique index.
+    /// </summary>
     [Fact]
     public void FindBestIndex_Should_Prefer_Unique_Index()
     {
@@ -32,6 +35,9 @@ public class CollectionIndexManagerAndDefinitionTests
         }
     }
 
+    /// <summary>
+    /// Tests find best compound index should choose longest prefix.
+    /// </summary>
     [Fact]
     public void FindBestCompoundIndex_Should_Choose_Longest_Prefix()
     {
@@ -69,6 +75,9 @@ public class CollectionIndexManagerAndDefinitionTests
         }
     }
 
+    /// <summary>
+    /// Tests drop index should remove metadata and be idempotent.
+    /// </summary>
     [Fact]
     public void DropIndex_Should_Remove_Metadata_And_Be_Idempotent()
     {
@@ -97,6 +106,9 @@ public class CollectionIndexManagerAndDefinitionTests
         }
     }
 
+    /// <summary>
+    /// Tests collection index definition should respect query support rules.
+    /// </summary>
     [Fact]
     public void CollectionIndexDefinition_Should_Respect_Query_Support_Rules()
     {
@@ -116,6 +128,9 @@ public class CollectionIndexManagerAndDefinitionTests
         definition.ToString().ShouldContain("Name");
     }
 
+    /// <summary>
+    /// Tests collection index info to string should include diagnostics.
+    /// </summary>
     [Fact]
     public void CollectionIndexInfo_ToString_Should_Include_Diagnostics()
     {