chore: scaffold Laravel 13 core app

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCrwHHnGCB5XH968Nxokqw

core/bootstrap/app.php

@@ -0,0 +1,21 @@
+<?php
+
+use Illuminate\Foundation\Application;
+use Illuminate\Foundation\Configuration\Exceptions;
+use Illuminate\Foundation\Configuration\Middleware;
+use Illuminate\Http\Request;
+
+return Application::configure(basePath: dirname(__DIR__))
+    ->withRouting(
+        web: __DIR__.'/../routes/web.php',
+        commands: __DIR__.'/../routes/console.php',
+        health: '/up',
+    )
+    ->withMiddleware(function (Middleware $middleware): void {
+        //
+    })
+    ->withExceptions(function (Exceptions $exceptions): void {
+        $exceptions->shouldRenderJsonWhen(
+            fn (Request $request) => $request->is('api/*') || $request->expectsJson(),
+        );
+    })->create();