feat: add City10 platform with Laravel 13, AI agents, 3D viewer, and LGPD compliance

Initial commit of the complete City10 virtual city simulation platform.

Backend (Laravel 13):
- REST API with Sanctum tokens and session-based web authentication
- Role-based access control (admin/user) with middleware protection
- AI agent CRUD with OpenRouter.ai integration restricted to free models
- Store management with 3D coordinates and AI shopkeeper assignment
- Versioned legal documents (Terms, Privacy, Cookies) with LGPD audit trail
- Math CAPTCHA on public forms and multi-language support (pt_BR, en, es)

Frontend:
- Responsive Blade templates with Tailwind CSS v4
- Three.js 3D city viewer with SSE chat streaming to AI agents
- Admin panel for store and user administration

Infrastructure:
- MariaDB/MySQL database with comprehensive migrations
- Database seeders for demo content and test accounts
- PHPUnit test suite and Laravel Pint code styling
- Vite build configuration with hot reload

resources/views/legal/show.blade.php

@@ -0,0 +1,16 @@
+@extends('layouts.app')
+
+@section('title', $title)
+
+@section('content')
+<article class="card" style="max-width: 820px; margin: 0 auto;">
+    <header style="margin-bottom: 1rem;">
+        <h1 style="margin:0 0 .35rem; color:#fff;">{{ $title }}</h1>
+        <p style="margin:0; color:var(--muted); font-size:.85rem;">Versão {{ $document->version }} — Vigente desde {{ $document->published_at?->format('d/m/Y H:i') }}</p>
+    </header>
+
+    <div class="legal-body" style="color:var(--text); line-height:1.65; font-size:.98rem;">
+        {!! \Illuminate\Support\Str::markdown($body, ['html_input' => 'escape', 'allow_unsafe_links' => false]) !!}
+    </div>
+</article>
+@endsection