Fait confiance aux reverse proxies pour la détection HTTPS

Sans TrustProxies, Laravel ignore X-Forwarded-Proto derrière un proxy qui
termine le TLS et génère les URLs d'assets en http://, provoquant des
erreurs de contenu mixte sur les pages servies en https://.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

bootstrap/app.php

@@ -12,6 +12,12 @@ return Application::configure(basePath: dirname(__DIR__))
         health: '/up',
     )
     ->withMiddleware(function (Middleware $middleware): void {
+        // The app runs behind a reverse proxy that terminates TLS and forwards
+        // plain HTTP — without this, Laravel doesn't know the original request
+        // was HTTPS and generates asset/URL links as http://, which browsers
+        // then block as mixed content on an https:// page.
+        $middleware->trustProxies(at: '*');
+
         $middleware->alias([
             'org.ip_access' => \App\Http\Middleware\CheckOrganizationIpAccess::class,
             'role' => \Spatie\Permission\Middleware\RoleMiddleware::class,