using cloude sonet 3.5 i have used the prompt to create the migrations and their files and installed api package

app/Services/FamilyService.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace App\Services;
+
+use App\Models\User;
+use App\Models\UserRelationship;
+use App\Models\Invoice;
+
+class FamilyService
+{
+    /**
+     * Create a new dependent user and link it to the guardian.
+     *
+     * @param User $guardian The guardian user
+     * @param array $data The dependent user data
+     * @return User The newly created dependent user
+     */
+    public function createDependent(User $guardian, array $data): User
+    {
+        // Create the dependent user
+        $dependent = User::create([
+            'full_name' => $data['full_name'],
+            'email' => $data['email'] ?? null,
+            'password' => $data['password'] ?? null,
+            'mobile' => $data['mobile'] ?? null,
+            'gender' => $data['gender'],
+            'birthdate' => $data['birthdate'],
+            'blood_type' => $data['blood_type'] ?? null,
+            'nationality' => $data['nationality'],
+            'addresses' => $data['addresses'] ?? [],
+            'social_links' => $data['social_links'] ?? [],
+            'media_gallery' => $data['media_gallery'] ?? [],
+        ]);
+
+        // Create the relationship between guardian and dependent
+        UserRelationship::create([
+            'guardian_user_id' => $guardian->id,
+            'dependent_user_id' => $dependent->id,
+            'relationship_type' => $data['relationship_type'],
+            'is_billing_contact' => $data['is_billing_contact'] ?? false,
+        ]);
+
+        return $dependent;
+    }
+
+    /**
+     * Get all invoices where the guardian is the payer.
+     *
+     * @param int $guardianId The guardian user ID
+     * @return \Illuminate\Database\Eloquent\Collection The invoices
+     */
+    public function getFamilyInvoices(int $guardianId)
+    {
+        return Invoice::where('payer_user_id', $guardianId)
+            ->with('student')
+            ->get();
+    }
+}