feat(Navbar): logo click smooth-scrolls to top

app/components/Navbar.tsx

@@ -52,8 +52,16 @@ export function Navbar() {
     >
       <div className="w-full flex items-center justify-between">
 
-        {/* Logo — exported directly from Figma */}
-        <Link href="/" className="shrink-0">
+        {/* Logo — smooth scroll to top */}
+        <a
+          href="/"
+          className="shrink-0"
+          onClick={(e) => {
+            e.preventDefault();
+            smoothScrollTo(0);
+            history.replaceState(null, "", "/");
+          }}
+        >
           <Image
             src="/logo.png"
             alt="einfach produktiv"
@@ -61,7 +69,7 @@ export function Navbar() {
             height={61}
             priority
           />
-        </Link>
+        </a>
 
         {/* Nav links */}
         <nav className="flex items-center gap-[3rem]">