Temp limit TreeSitter to 6000 lines of code max.

* Hotfix to resolve issues with the syntax highlighter, which
  becomes unstable with very large files, need to dig into
  TreeSitter to find the culprit of this unstability before we
  can increase this threshold higher.

Sources/Kraken/IO/Universal/KIO.USD.swift

@@ -75,15 +75,17 @@ public extension Kraken.IO
 
         var contents = ""
         context.stage.exportToString(&contents, addSourceFileComment: false)
-        context.usda = contents
+        context.usda = String(contents.prefix(6000))
         return
       }
-      context.usda = string
+      context.usda = String(string.prefix(6000))
     }
 
     public func fileWrapper(snapshot _: Kraken.IO.USD.Context, configuration _: WriteConfiguration) throws -> FileWrapper
     {
-      context.stage.exportToString(&context.usda, addSourceFileComment: false)
+      var contents = ""
+      context.stage.exportToString(&contents, addSourceFileComment: false)
+      context.usda = String(contents.prefix(6000))
 
       return .init(regularFileWithContents: context.usda.data(using: .utf8)!)
     }
@@ -122,7 +124,10 @@ public extension Kraken.IO.USD
       stage = Usd.Stage.open(fileURL.path)
 
       Kraken.IO.Stage.manager.save(&stage)
-      stage.exportToString(&usda, addSourceFileComment: false)
+
+      var contents = ""
+      stage.exportToString(&contents, addSourceFileComment: false)
+      usda = String(contents.prefix(6000))
     }
 
     public func open(fileURL: URL)
@@ -131,7 +136,10 @@ public extension Kraken.IO.USD
       stage = Usd.Stage.open(fileURL.path)
 
       Kraken.IO.Stage.manager.save(&stage)
-      stage.exportToString(&self.usda, addSourceFileComment: false)
+
+      var contents = ""
+      stage.exportToString(&contents, addSourceFileComment: false)
+      usda = String(contents.prefix(6000))
     }
   }
 }

Sources/Kraken/UI/Editors/KUI.CodeEditor.swift

@@ -100,14 +100,6 @@ public extension Kraken.UI
         Task
         {
           Kraken.IO.Stage.manager.reloadAndSave(stage: &C.context.stage)
-
-          var contents = ""
-          C.context.stage.exportToString(&contents, addSourceFileComment: false)
-
-          if C.context.usda != contents
-          {
-            C.context.usda = contents
-          }
         }
       }
       .onAppear