Only calc diff to scroll to if fileExists

src/ClaudeDev.ts

@@ -848,6 +848,7 @@ export class ClaudeDev {
 			await vscode.workspace.applyEdit(edit) // has the added benefit of maintaing the file's original EOLs
 
 			// Find the first range where the content differs and scroll to it
+			if (fileExists) {
 				const diffResult = diff.diffLines(originalContent, newContent)
 				for (let i = 0, lineCount = 0; i < diffResult.length; i++) {
 					const part = diffResult[i]
@@ -863,6 +864,7 @@ export class ClaudeDev {
 					}
 					lineCount += part.count || 0
 				}
+			}
 
 			// remove cursor from the document
 			await vscode.commands.executeCommand("workbench.action.focusSideBar")