Successful signup provides clear confirmation

When signup succeeds silently, users cannot tell whether the click worked. Some retry the form and create duplicate attempts that the backend must deduplicate; others assume failure and leave entirely. The user-experience taxon treats acknowledgement of state changes as foundational: the moment an account is created is the single most important transition in the funnel, and a redirect with no toast, welcome screen, or onboarding handoff makes that transition invisible to the user who just completed it.

Add an explicit success signal on the post-signup path. In src/app/(auth)/signup/page.tsx, fire a toast with a concrete confirmation message and route new users to a welcome or onboarding route rather than dropping them on the main dashboard. Many auth libraries expose an isNewUser flag you can branch on.

const onSignup = async () => {
  await createAccount(data);
  toast.success('Welcome! Your account has been created.');
  router.push('/onboarding');
};