feat(backend): complete Module 1 auth (register/login/OTP/reset)

Closes Module 1: 9 auth endpoints under /api/v1/auth, OTP via SMS
(Semaphore + log + fake drivers), role middleware, role + admin seeders,
27 feature tests passing.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/Http/Resources/UserResource.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace App\Http\Resources;
+
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+class UserResource extends JsonResource
+{
+    public function toArray(Request $request): array
+    {
+        return [
+            'id' => $this->uuid,
+            'email' => $this->email,
+            'phone' => $this->phone,
+            'first_name' => $this->first_name,
+            'middle_name' => $this->middle_name,
+            'last_name' => $this->last_name,
+            'role' => $this->role,
+            'status' => $this->status,
+            'preferred_language' => $this->preferred_language,
+            'email_verified_at' => $this->email_verified_at?->toIso8601String(),
+            'phone_verified_at' => $this->phone_verified_at?->toIso8601String(),
+            'last_login_at' => $this->last_login_at?->toIso8601String(),
+        ];
+    }
+}