feat: implement onboarding flow with complex creation and email verification, and add Zustand for state management

apps/backend/src/modules/complex/handlers/create-complex.handler.ts

@@ -1,3 +1,4 @@
+import { db } from '@/lib/prisma';
 import { createComplex } from '@/modules/complex/services/complex.service';
 import type { AppContext } from '@/types/hono';
 import type { CreateComplexInput } from '@repo/api-contract';
@@ -6,16 +7,32 @@ export async function createComplexHandler(c: AppContext) {
   const payload = c.req.valid('json' as never) as CreateComplexInput;
 
   const user = c.get('user');
-  const adminEmail = user.email;
+  let adminEmail = user?.email;
+  let userId = user?.id;
 
   if (!adminEmail) {
-    return c.json({ message: 'El usuario autenticado no tiene email.' }, 400);
+    const body = await c.req.json().catch(() => ({}));
+    adminEmail = body.adminEmail;
+    userId = body.userId;
+  }
+
+  if (!adminEmail) {
+    return c.json({ message: 'Se requiere email del administrador.' }, 400);
+  }
+
+  if (!userId && adminEmail) {
+    const existingUser = await db.user.findUnique({
+      where: { email: adminEmail },
+      select: { id: true },
+    });
+    userId = existingUser?.id;
   }
 
   const complex = await createComplex({
     complexName: payload.complexName,
     physicalAddress: payload.physicalAddress,
     adminEmail,
+    userId,
     planCode: payload.planCode,
     city: payload.city,
     state: payload.state,