Strip doc comments from the Caching projects

Every /// line in GameCult.Caching and GameCult.Caching.MessagePack goes; they
restated member names. Three blocks that state a rule stay as // comments:
MaterializeMissingGlobals runs after hydration so persisted globals win,
ExecuteTransactionAsync commits durably before the cache and observers
advance, and CommitBatch implementations restore their staged view on
failure. Both projects add NoWarn CS1591, since GenerateDocumentationFile is
on in src/Directory.Build.props.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/GameCult.Caching.MessagePack/DirectoryMessagePackBackingStore.cs

@@ -11,9 +11,6 @@ using MessagePack;
 
 namespace GameCult.Caching.MessagePack;
 
-/// <summary>
-/// MessagePack backing store that keeps a small schema manifest hot and stores each record as its own cold file.
-/// </summary>
 public sealed class DirectoryMessagePackBackingStore : CacheBackingStore
 {
     private const string IndexedFormatVersion = "cultcache.store.v4.directory-content-addressed-pages";
@@ -26,9 +23,6 @@ public sealed class DirectoryMessagePackBackingStore : CacheBackingStore
     private Dictionary<string, CultPersistedRecord> _durableIndex = new(StringComparer.Ordinal);
     private CultSchemaCatalogEntry[] _durableCatalog = Array.Empty<CultSchemaCatalogEntry>();
 
-    /// <summary>
-    /// Creates a paged MessagePack backing store.
-    /// </summary>
     public DirectoryMessagePackBackingStore(string manifestPath, string? recordDirectoryPath = null)
     {
         if (string.IsNullOrWhiteSpace(manifestPath))
@@ -40,12 +34,8 @@ public sealed class DirectoryMessagePackBackingStore : CacheBackingStore
         _recordDirectory = new DirectoryInfo(recordDirectoryPath ?? DefaultRecordDirectoryPath(manifestPath));
     }
 
-    /// <summary>
-    /// Gets the default record directory path for a manifest path.
-    /// </summary>
     public static string DefaultRecordDirectoryPath(string manifestPath) => manifestPath + ".records";
 
-    /// <inheritdoc />
     public override void PullAll()
     {
         lock (_mutationGate)
@@ -120,14 +110,12 @@ public sealed class DirectoryMessagePackBackingStore : CacheBackingStore
         Trace("publish");
     }
 
-    /// <inheritdoc />
     public override bool ContainsDurableRecord(CultRecordKey key)
     {
         lock (_mutationGate)
             return _durableIndex.ContainsKey(key.Value) || base.ContainsDurableRecord(key);
     }
 
-    /// <inheritdoc />
     public override void Push(CultStoredDocument entry)
     {
         lock (_mutationGate)
@@ -139,7 +127,6 @@ public sealed class DirectoryMessagePackBackingStore : CacheBackingStore
         }
     }
 
-    /// <inheritdoc />
     public override void Delete(CultStoredDocument entry)
     {
         lock (_mutationGate)
@@ -151,7 +138,6 @@ public sealed class DirectoryMessagePackBackingStore : CacheBackingStore
         }
     }
 
-    /// <inheritdoc />
     public override void CommitBatch(
         IReadOnlyCollection<CultStoredDocument> upserts,
         IReadOnlyCollection<CultStoredDocument> deletes)
@@ -196,7 +182,6 @@ public sealed class DirectoryMessagePackBackingStore : CacheBackingStore
         }
     }
 
-    /// <inheritdoc />
     public override void PushAll()
     {
         lock (_mutationGate)