fix: unify chat process and reply presentation

src/features/agent/components/agent-user-message-text.tsx

@@ -0,0 +1,5 @@
+import { copySelectedParagraph } from "@/shared/ai-elements/paragraph-copy";
+
+export function AgentUserMessageText({ content }: { content: string }) {
+  return <p className="whitespace-pre-wrap" onCopy={(event) => copySelectedParagraph(event, event.currentTarget)}>{content}</p>;
+}