Initial commit: Horux Backend API

- API REST para gestion de facturas electronicas mexicanas (CFDI)
- Laravel 9 con autenticacion OAuth 2.0 (Passport)
- Integracion con Syntage, Clerk y Facturama
- 30 modelos Eloquent, 39 controladores
- Documentacion completa en /docs

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/Models/User.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace App\Models;
+
+// use Illuminate\Contracts\Auth\MustVerifyEmail;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Foundation\Auth\User as Authenticatable;
+use Laravel\Passport\HasApiTokens;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use App\Models\LinkedSocialAccount;
+
+use Illuminate\Notifications\Notifiable;
+
+class User extends Authenticatable
+{
+    use HasFactory, Notifiable, HasApiTokens;
+
+    /**
+     * The attributes that are mass assignable.
+     *
+     * @var array<int, string>
+     */
+    protected $fillable = [
+        'name',
+        'email',
+        'password',
+        'role_id'
+    ];
+
+    /**
+     * The attributes that should be hidden for serialization.
+     *
+     * @var array<int, string>
+     */
+    protected $hidden = [
+        'password',
+        'remember_token',
+    ];
+
+    /**
+     * The attributes that should be cast.
+     *
+     * @var array<string, string>
+     */
+    protected $casts = [
+        'email_verified_at' => 'datetime',
+    ];
+
+    public function linkedSocialAccounts()
+    {
+    return $this->hasMany(LinkedSocialAccount::class);
+    }
+
+    public function role(): BelongsTo
+    {
+        return $this->belongsTo(Role::class);
+    }
+
+    public function rfcs(): BelongsToMany
+    {
+        return $this->belongsToMany(Rfc::class);
+    }
+
+    public function managerOTPs(): HasMany
+    {
+        return $this->hasMany(ManagerOTP::class);
+    }
+}