refactor: [issue-7878] delete plugins runtime folders after build

src/Build/src/ClearPluginAssemblies/Program.cs

@@ -41,6 +41,9 @@ protected static void Clear(string paths, IList<string> fileNames, bool saveLoca
                     if (directoryInfo.GetFiles().Length == 0 && directoryInfo.GetDirectories().Length == 0 && !saveLocalesFolders)
                         directoryInfo.Delete(true);
                 }
+
+                // Delete runtimes folder after clearing assemblies
+                DeleteRuntimesFolder(pluginPath);
             }
             catch
             {
@@ -49,14 +52,38 @@ protected static void Clear(string paths, IList<string> fileNames, bool saveLoca
         }
     }
 
+    /// <summary>
+    /// Deletes the runtimes folder from the plugin directory.
+    /// The runtimes folder contains platform-specific native libraries for cross-platform support.
+    /// Since we build for a specific OS, these folders are unnecessary and waste disk space.
+    /// </summary>
+    /// <param name="pluginPath">The path to the plugin directory</param>
+    protected static void DeleteRuntimesFolder(string pluginPath)
+    {
+        try
+        {
+            var runtimesPath = Path.Combine(pluginPath, "runtimes");
+            if (Directory.Exists(runtimesPath))
+            {
+                Directory.Delete(runtimesPath, recursive: true);
+                Console.WriteLine($"Deleted runtimes folder from: {pluginPath}");
+            }
+        }
+        catch (Exception ex)
+        {
+            // Log the error but don't fail the build
+            Console.WriteLine($"Warning: Could not delete runtimes folder from {pluginPath}: {ex.Message}");
+        }
+    }
+
     private static void Main(string[] args)
     {
         var outputPath = string.Empty;
         var pluginPaths = string.Empty;
         var saveLocalesFolders = true;
 
         var settings = args.FirstOrDefault(a => a.Contains('|')) ?? string.Empty;
-        if(string.IsNullOrEmpty(settings))
+        if (string.IsNullOrEmpty(settings))
             return;
 
         foreach (var arg in settings.Split('|'))
@@ -79,8 +106,8 @@ private static void Main(string[] args)
                     break;
             }
         }
-        
-        if(!Directory.Exists(outputPath))
+
+        if (!Directory.Exists(outputPath))
             return;
 
         var di = new DirectoryInfo(outputPath);