Add OTP sign-in option + Account Linking (#276)

* feat(accounts): allow linking email password
* feat(auth): add OTP sign-in
* refactor(accounts): remove 'sonner' dependency and update toast imports
* feat(supabase): enable analytics and configure database seeding
* feat(auth): update email templates and add OTP template
* feat(auth): add last sign in method hints
* feat(config): add devIndicators position to bottom-right
* feat(auth): implement comprehensive last authentication method tracking tests

packages/supabase/src/hooks/use-link-identity-with-email-password.ts

@@ -0,0 +1,50 @@
+import { useMutation, useQueryClient } from '@tanstack/react-query';
+
+import { useSupabase } from './use-supabase';
+import { USER_IDENTITIES_QUERY_KEY } from './use-user-identities';
+
+interface Credentials {
+  email: string;
+  password: string;
+  redirectTo: string;
+}
+
+export function useLinkIdentityWithEmailPassword() {
+  const client = useSupabase();
+  const queryClient = useQueryClient();
+  const mutationKey = ['auth', 'link-email-password'];
+
+  const mutationFn = async (credentials: Credentials) => {
+    const { email, password, redirectTo } = credentials;
+
+    const { error } = await client.auth.updateUser(
+      {
+        email,
+        password,
+        data: {
+          // This is used to indicate that the user has a password set
+          // because Supabase does not add the identity after setting a password
+          // if the user was created with oAuth
+          hasPassword: true,
+        },
+      },
+      { emailRedirectTo: redirectTo },
+    );
+
+    if (error) {
+      throw error.message ?? error;
+    }
+
+    await client.auth.refreshSession();
+  };
+
+  return useMutation({
+    mutationKey,
+    mutationFn,
+    onSuccess: () => {
+      return queryClient.invalidateQueries({
+        queryKey: USER_IDENTITIES_QUERY_KEY,
+      });
+    },
+  });
+}