Refactor: standardize namespace and using directive style

Refactored all C# test files to use explicit namespace declarations and moved all using directives inside the namespace block for consistency. Updated assembly info and cache files to reflect the new build. Adjusted MvcTestingAppManifest.json to use fully qualified assembly names. No functional changes; all updates are related to code style, organization, and project metadata.

MediaBrowser.Controller/Library/IDirectStreamProvider.cs

@@ -2,10 +2,10 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System.IO;
-
 namespace MediaBrowser.Controller.Library
 {
+    using System.IO;
+
     /// <summary>
     /// The direct live TV stream provider.
     /// </summary>

MediaBrowser.Controller/Library/IIntroProvider.cs

@@ -2,15 +2,15 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-#nullable disable
-
-using System.Collections.Generic;
-using System.Threading.Tasks;
-using Jellyfin.Database.Implementations.Entities;
-using MediaBrowser.Controller.Entities;
-
 namespace MediaBrowser.Controller.Library
 {
+#nullable disable
+
+    using System.Collections.Generic;
+    using System.Threading.Tasks;
+    using Jellyfin.Database.Implementations.Entities;
+    using MediaBrowser.Controller.Entities;
+
     /// <summary>
     /// Class BaseIntroProvider.
     /// </summary>

MediaBrowser.Controller/Library/IKeyframeManager.cs

@@ -2,14 +2,14 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
+namespace MediaBrowser.Controller.IO;
+
 using System;
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
 using Jellyfin.MediaEncoding.Keyframes;
 
-namespace MediaBrowser.Controller.IO;
-
 /// <summary>
 /// Interface IKeyframeManager.
 /// </summary>

MediaBrowser.Controller/Library/ILibraryPostScanTask.cs

@@ -2,12 +2,12 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System;
-using System.Threading;
-using System.Threading.Tasks;
-
 namespace MediaBrowser.Controller.Library
 {
+    using System;
+    using System.Threading;
+    using System.Threading.Tasks;
+
     /// <summary>
     /// An interface for tasks that run after the media library scan.
     /// </summary>

MediaBrowser.Controller/Library/IMetadataSaver.cs

@@ -2,12 +2,12 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System.Threading;
-using System.Threading.Tasks;
-using MediaBrowser.Controller.Entities;
-
 namespace MediaBrowser.Controller.Library
 {
+    using System.Threading;
+    using System.Threading.Tasks;
+    using MediaBrowser.Controller.Entities;
+
     /// <summary>
     /// Interface IMetadataSaver.
     /// </summary>

MediaBrowser.Controller/Library/ISearchEngine.cs

@@ -2,11 +2,11 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using MediaBrowser.Model.Querying;
-using MediaBrowser.Model.Search;
-
 namespace MediaBrowser.Controller.Library
 {
+    using MediaBrowser.Model.Querying;
+    using MediaBrowser.Model.Search;
+
     /// <summary>
     /// Interface ILibrarySearchEngine.
     /// </summary>

MediaBrowser.Controller/Library/IUserDataManager.cs

@@ -2,17 +2,17 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
-using System.Threading;
-using Jellyfin.Database.Implementations.Entities;
-using MediaBrowser.Controller.Dto;
-using MediaBrowser.Controller.Entities;
-using MediaBrowser.Model.Dto;
-using MediaBrowser.Model.Entities;
-
 namespace MediaBrowser.Controller.Library
 {
+    using System;
+    using System.Collections.Generic;
+    using System.Threading;
+    using Jellyfin.Database.Implementations.Entities;
+    using MediaBrowser.Controller.Dto;
+    using MediaBrowser.Controller.Entities;
+    using MediaBrowser.Model.Dto;
+    using MediaBrowser.Model.Entities;
+
     /// <summary>
     /// Interface IUserDataManager.
     /// </summary>

MediaBrowser.Controller/Library/SearchHintInfo.cs

@@ -2,12 +2,12 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-#nullable disable
-
-using MediaBrowser.Controller.Entities;
-
 namespace MediaBrowser.Controller.Library
 {
+#nullable disable
+
+    using MediaBrowser.Controller.Entities;
+
     /// <summary>
     /// Class SearchHintInfo.
     /// </summary>

MediaBrowser.Controller/Library/TVUtils.cs

@@ -2,11 +2,11 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System;
-using System.Diagnostics.CodeAnalysis;
-
 namespace MediaBrowser.Controller.Library
 {
+    using System;
+    using System.Diagnostics.CodeAnalysis;
+
     /// <summary>
     /// Class TVUtils.
     /// </summary>