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/Http/Middleware/Authenticate.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Auth\Middleware\Authenticate as Middleware;
+
+class Authenticate extends Middleware
+{
+    /**
+     * Get the path the user should be redirected to when they are not authenticated.
+     *
+     * @param  \Illuminate\Http\Request  $request
+     * @return string|null
+     */
+    protected function redirectTo($request)
+    {
+        if (! $request->expectsJson()) {
+            return route('login');
+        }
+    }
+}