Add SealShare file sharing application with encryption, branding, auth, Docker, and Octane support

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

bootstrap/app.php

@@ -1,5 +1,9 @@
 <?php
 
+use App\Http\Middleware\EnsureAdmin;
+use App\Http\Middleware\EnsureSetupComplete;
+use App\Http\Middleware\SecurityHeaders;
+use App\Http\Middleware\SystemPasswordGate;
 use Illuminate\Foundation\Application;
 use Illuminate\Foundation\Configuration\Exceptions;
 use Illuminate\Foundation\Configuration\Middleware;
@@ -11,7 +15,17 @@ return Application::configure(basePath: dirname(__DIR__))
         health: '/up',
     )
     ->withMiddleware(function (Middleware $middleware): void {
-        //
+        $middleware->trustProxies(at: '*');
+
+        $middleware->web(append: [
+            EnsureSetupComplete::class,
+            SecurityHeaders::class,
+        ]);
+
+        $middleware->alias([
+            'system.password' => SystemPasswordGate::class,
+            'admin' => EnsureAdmin::class,
+        ]);
     })
     ->withExceptions(function (Exceptions $exceptions): void {
         //