feat(cms): implement complete SysSiteCMS content management system

Initial implementation of the HomeSysPanel CMS built with Laravel 13.0.
Includes complete admin panel, content management, user authentication,
modular architecture for products/services/chatbot, and marketing tools.

Key features:
- User authentication with email verification and password reset
- Role-based access control (Admin/User with granular permissions)
- Content management (pages, news, FAQ, downloads, galleries, banners)
- Contact management system with subjects and responses
- Marketing tools (email campaigns, visitor analytics, social sharing)
- Modular architecture (Products, Services, Chatbot modules)
- AI Chatbot integration with OpenRouter.ai and LlamaCpp support
- Visitor tracking with geolocation
- SEO optimization with meta tags and Open Graph
- Responsive design with Bootstrap 5
- Dark mode support
- Maintenance mode
- Feature request system

resources/views/errors/403.blade.php

@@ -0,0 +1,24 @@
+@extends('layouts.app')
+
+@section('title', 'Acesso Negado')
+
+@section('content')
+<div class="container py-5">
+    <div class="row justify-content-center align-items-center" style="min-height: 60vh;">
+        <div class="col-md-6 text-center">
+            <div class="mb-4">
+                <i class="bi bi-lock text-danger"></i>
+            </div>
+            <h1 class="display-4 fw-bold text-danger mb-3">403</h1>
+            <h2 class="h4 mb-3">Acesso Negado</h2>
+            <p class="text-muted mb-4">
+                Você não tem permissão para acessar esta seção do sistema.<br>
+                Entre em contato com o administrador caso precise de acesso.
+            </p>
+            <a href="{{ route('home') }}" class="btn btn-primary btn-lg px-5">
+                <i class="bi bi-house me-2"></i> Voltar ao Dashboard
+            </a>
+        </div>
+    </div>
+</div>
+@endsection

resources/views/errors/maintenance.blade.php

@@ -0,0 +1,57 @@
+<!DOCTYPE html>
+<html lang="pt-BR">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Site em Manutenção - {{ config('app.name') }}</title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css">
+    <style>
+        body {
+            background-color: #f8f9fa;
+            height: 100vh;
+            display: flex;
+            align-items: center;
+            justify-content: center;
+        }
+        .maintenance-card {
+            max-width: 600px;
+            padding: 3rem;
+            border-radius: 1.5rem;
+            box-shadow: 0 1rem 3rem rgba(0,0,0,0.1);
+            background-color: white;
+            text-align: center;
+        }
+        .maintenance-icon {
+            font-size: 5rem;
+            color: #0d6efd;
+            margin-bottom: 2rem;
+        }
+    </style>
+</head>
+<body>
+    <div class="maintenance-card mx-3">
+        <div class="maintenance-icon">
+            <i class="bi bi-tools"></i>
+        </div>
+        <h1 class="display-5 fw-bold mb-4">Site em Manutenção</h1>
+        <p class="lead text-muted mb-5">
+            Estamos realizando algumas melhorias em nosso site para oferecer uma experiência ainda melhor. 
+            Voltaremos em breve!
+        </p>
+        <div class="d-grid gap-2 d-md-flex justify-content-md-center">
+            <a href="mailto:contato@syspanel.com.br" class="btn btn-outline-primary rounded-pill px-4">
+                <i class="bi bi-envelope me-2"></i> Entrar em Contato
+            </a>
+            @auth
+                @if(Auth::user()->user_type === 'Admin')
+                    <a href="{{ route('home') }}" class="btn btn-primary rounded-pill px-4">
+                        <i class="bi bi-speedometer2 me-2"></i> Ir para o Painel
+                    </a>
+                @endif
+            @endauth
+        </div>
+        <p class="mt-5 text-muted small">&copy; {{ date('Y') }} {{ config('app.name') }}. Todos os direitos reservados.</p>
+    </div>
+</body>
+</html>