refactor(chat): split oversized chat modules

src/components/chat/AgentMarkdownBlock.tsx

@@ -0,0 +1,27 @@
+"use client";
+
+import React from "react";
+import ReactMarkdown from "react-markdown";
+import remarkGfm from "remark-gfm";
+
+import markdownStyles from "./GlobalChatboxMarkdown.module.css";
+
+export const normalizeClipboardText = (value: string) => value.replace(/\s+$/u, "");
+
+export const MarkdownBlock = ({ children }: { children: string }) => {
+  const handleCopy = React.useCallback((event: React.ClipboardEvent<HTMLDivElement>) => {
+    const selectedText = window.getSelection()?.toString();
+    if (!selectedText) return;
+
+    event.preventDefault();
+    event.clipboardData.setData("text/plain", normalizeClipboardText(selectedText));
+  }, []);
+
+  return (
+    <div className={markdownStyles.markdown} onCopy={handleCopy}>
+      <ReactMarkdown remarkPlugins={[remarkGfm]}>{children}</ReactMarkdown>
+    </div>
+  );
+};
+
+