Harden form auth and submission handling

components/theme-toggle.tsx

@@ -31,7 +31,8 @@ export function ThemeToggle() {
   const [mounted, setMounted] = React.useState(false)
 
   React.useEffect(() => {
-    setMounted(true)
+    const timeout = setTimeout(() => setMounted(true), 0)
+    return () => clearTimeout(timeout)
   }, [])
 
   // Once mounted, resolve "system" to its actual rendered theme for the icon
@@ -62,4 +63,4 @@ export function ThemeToggle() {
       </DropdownMenuContent>
     </DropdownMenu>
   )
-}
+}