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

AGENTS.md

@@ -0,0 +1,47 @@
+<laravel-boost-guidelines>
+# Laravel Application
+
+This repository contains a Laravel application. Complete the following setup before working on the user's request.
+
+## Prerequisites
+
+Verify that PHP and Composer are available:
+
+```sh
+php -v
+composer -V
+```
+
+If either command is unavailable, detect the user's operating system and install the prerequisites with the appropriate command:
+
+macOS:
+
+```sh
+/bin/bash -c "$(curl -fsSL https://php.new/install/mac/8.5)"
+```
+
+Windows PowerShell:
+
+```powershell
+Set-ExecutionPolicy Bypass -Scope Process -Force; [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; iex ((New-Object System.Net.WebClient).DownloadString('https://php.new/install/windows/8.5'))
+```
+
+Linux:
+
+```sh
+/bin/bash -c "$(curl -fsSL https://php.new/install/linux/8.5)"
+```
+
+After installation, ask the user to restart their terminal. If the agent needs the restarted shell to continue, ask the user to reopen their terminal and rerun their original prompt.
+
+## Agent Setup
+
+Install Laravel Boost from the application root before making application changes:
+
+```sh
+composer require laravel/boost --dev
+php artisan boost:install
+```
+
+Boost replaces these bootstrap instructions with guidelines tailored to the application. After installation, read `AGENTS.md` again and continue with the user's original request using the generated guidelines.
+</laravel-boost-guidelines>