feat: add complex user invitation and management features

- Implemented complex member and invitation schemas using Zod for validation.
- Created new API endpoints for inviting, accepting, revoking, and canceling complex user invitations.
- Developed handlers for managing complex users, including listing, inviting, revoking, and canceling invitations.
- Added frontend components for displaying and managing complex users and invitations.
- Introduced session storage management for pending invitations.
- Integrated Gravatar for user avatars based on email.
- Created database migration for complex invitations table.

apps/frontend/src/features/onboard/verify-email-page.tsx

@@ -1,4 +1,5 @@
 import { Button } from '@/components/ui/button';
+import { getPendingInvite } from '@/lib/invitations';
 import { Route } from '@/routes/onboard/verify-email';
 import { Link } from '@tanstack/react-router';
 import { useEffect, useState } from 'react';
@@ -6,6 +7,7 @@ import { useEffect, useState } from 'react';
 export function VerifyEmailPage() {
   const search = Route.useSearch();
   const email = search.email || sessionStorage.getItem('pending-signup-email') || '';
+  const pendingInvite = getPendingInvite();
   const [resendCooldown, setResendCooldown] = useState(0);
 
   useEffect(() => {
@@ -42,9 +44,22 @@ export function VerifyEmailPage() {
 
           <p className="text-center text-sm text-muted-foreground">
             ¿Ya verificaste tu email?{' '}
-            <Link to="/onboard/create-complex" className="text-primary hover:underline">
-              Continuar
-            </Link>
+            {pendingInvite.token ? (
+              <Link
+                to="/invite"
+                search={{
+                  email: pendingInvite.email ?? email,
+                  inviteToken: pendingInvite.token,
+                }}
+                className="text-primary hover:underline"
+              >
+                Continuar con la invitación
+              </Link>
+            ) : (
+              <Link to="/onboard/create-complex" className="text-primary hover:underline">
+                Continuar
+              </Link>
+            )}
           </p>
         </div>
       </section>