feat(theme): force dark mode site-wide

components/layout/Header.tsx

@@ -3,7 +3,6 @@
 import Link from "next/link";
 import { usePathname } from "next/navigation";
 import { m } from "motion/react";
-import { ThemeToggle } from "@/components/ui/ThemeToggle";
 
 const navLinks = [
   { label: "Home", href: "/" },
@@ -45,7 +44,6 @@ export function Header() {
               </Link>
             );
           })}
-          <ThemeToggle />
         </div>
       </div>
     </m.nav>