Add Mem0 Demo (#2291)

examples/mem0-demo/components/assistant-ui/theme-aware-logo.tsx

@@ -0,0 +1,40 @@
+"use client";
+
+import React from "react";
+import Image from "next/image";
+
+export default function ThemeAwareLogo({
+  width = 40,
+  height = 40,
+  variant = "default",
+  isDarkMode = false,
+}: {
+  width?: number;
+  height?: number;
+  variant?: "default" | "collapsed";
+  isDarkMode?: boolean;
+}) {
+  // For collapsed variant, always use the icon
+  if (variant === "collapsed") {
+    return (
+      <div 
+        className={`flex items-center justify-center rounded-full ${isDarkMode ? 'bg-[#6366f1]' : 'bg-[#4f46e5]'}`}
+        style={{ width, height }}
+      >
+        <span className="text-white font-bold text-lg">M</span>
+      </div>
+    );
+  }
+  
+  // For default variant, use the full logo image
+  const logoSrc = isDarkMode ? "/images/assistant-ui-dark.svg" : "/images/assistant-ui.svg";
+  
+  return (
+    <Image
+      src={logoSrc}
+      alt="Mem0.ai"
+      width={width}
+      height={height}
+    />
+  );
+}