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.

Emby.Naming/AudioBook/AudioBookFileInfo.cs

@@ -2,10 +2,10 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System;
-
 namespace Emby.Naming.AudioBook
 {
+    using System;
+
     /// <summary>
     /// Represents a single video file.
     /// </summary>

Emby.Naming/AudioBook/AudioBookFilePathParser.cs

@@ -2,13 +2,13 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System.Globalization;
-using System.IO;
-using System.Text.RegularExpressions;
-using Emby.Naming.Common;
-
 namespace Emby.Naming.AudioBook
 {
+    using System.Globalization;
+    using System.IO;
+    using System.Text.RegularExpressions;
+    using Emby.Naming.Common;
+
     /// <summary>
     /// Parser class to extract part and/or chapter number from audiobook filename.
     /// </summary>

Emby.Naming/AudioBook/AudioBookInfo.cs

@@ -2,10 +2,10 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System.Collections.Generic;
-
 namespace Emby.Naming.AudioBook
 {
+    using System.Collections.Generic;
+
     /// <summary>
     /// Represents a complete video, including all parts and subtitles.
     /// </summary>

Emby.Naming/AudioBook/AudioBookListResolver.cs

@@ -2,16 +2,16 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using Emby.Naming.Common;
-using Emby.Naming.Video;
-using MediaBrowser.Model.IO;
-
 namespace Emby.Naming.AudioBook
 {
+    using System;
+    using System.Collections.Generic;
+    using System.IO;
+    using System.Linq;
+    using Emby.Naming.Common;
+    using Emby.Naming.Video;
+    using MediaBrowser.Model.IO;
+
     /// <summary>
     /// Class used to resolve Name, Year, alternative files and extras from stack of files.
     /// </summary>

Emby.Naming/AudioBook/AudioBookNameParser.cs

@@ -2,12 +2,12 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System.Globalization;
-using System.Text.RegularExpressions;
-using Emby.Naming.Common;
-
 namespace Emby.Naming.AudioBook
 {
+    using System.Globalization;
+    using System.Text.RegularExpressions;
+    using Emby.Naming.Common;
+
     /// <summary>
     /// Helper class to retrieve name and year from audiobook previously retrieved name.
     /// </summary>

Emby.Naming/AudioBook/AudioBookResolver.cs

@@ -2,13 +2,13 @@
 // Copyright (c) PlaceholderCompany. All rights reserved.
 // </copyright>
 
-using System;
-using System.IO;
-using Emby.Naming.Common;
-using Jellyfin.Extensions;
-
 namespace Emby.Naming.AudioBook
 {
+    using System;
+    using System.IO;
+    using Emby.Naming.Common;
+    using Jellyfin.Extensions;
+
     /// <summary>
     /// Resolve specifics (path, container, partNumber, chapterNumber) about audiobook file.
     /// </summary>