fix(coding-agent): stabilize edit diff previews closes #3134

packages/coding-agent/examples/extensions/built-in-tool-renderer.ts

@@ -16,6 +16,8 @@
  *   and delegate execute() to them
  * - renderCall() controls what's shown when the tool is invoked
  * - renderResult() controls what's shown after execution completes
+ * - renderShell: "self" lets a tool render its own outer shell instead of
+ *   using the default boxed shell from ToolExecutionComponent
  * - The `expanded` flag in renderResult indicates whether the user has
  *   toggled the tool output open (via ctrl+e or clicking)
  *
@@ -155,6 +157,7 @@ export default function (pi: ExtensionAPI) {
 		label: "edit",
 		description: originalEdit.description,
 		parameters: originalEdit.parameters,
+		renderShell: "self",
 
 		async execute(toolCallId, params, signal, onUpdate) {
 			return originalEdit.execute(toolCallId, params, signal, onUpdate);