feat(ui): adopt Lyra theme

components/theme-toggle.tsx

@@ -45,8 +45,8 @@ export function ThemeToggle() {
   return (
     <DropdownMenu>
       <DropdownMenuTrigger asChild>
-        <Button variant="ghost" size="icon" className="w-9 h-9">
-          <Icon className="h-[1.2rem] w-[1.2rem]" />
+        <Button variant="ghost" size="icon">
+          <Icon />
           <span className="sr-only">Toggle theme</span>
         </Button>
       </DropdownMenuTrigger>
@@ -55,7 +55,7 @@ export function ThemeToggle() {
           const OptionIcon = THEME_ICONS[value]
           return (
             <DropdownMenuItem key={value} onClick={() => setTheme(value)}>
-              <OptionIcon className="h-4 w-4" />
+              <OptionIcon />
               {label}
             </DropdownMenuItem>
           )