chore: merge with web UI project

web/src/app/_components/logo.tsx

@@ -0,0 +1,20 @@
+import { useState } from "react";
+
+import { Markdown } from "./markdown";
+
+export function Logo() {
+  const [text, setText] = useState("🦌 Deer");
+  return (
+    <a
+      className="text-sm opacity-70 transition-opacity duration-300 hover:opacity-100"
+      target="_blank"
+      href="https://github.com/bytedance/deer"
+      onMouseEnter={() =>
+        setText("🦌 **D**eep **E**xploration and **E**fficient **R**esearch")
+      }
+      onMouseLeave={() => setText("🦌 Deer")}
+    >
+      <Markdown animate>{text}</Markdown>
+    </a>
+  );
+}