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

app/Http/Controllers/Admin/SettingController.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace App\Http\Controllers\Admin;
+
+use App\Http\Controllers\Controller;
+use App\Models\Setting;
+use Illuminate\Http\Request;
+use Illuminate\Support\Facades\Artisan;
+
+class SettingController extends Controller
+{
+    public function index()
+    {
+        $settings = Setting::all()->groupBy('group');
+        return view('admin.settings.index', compact('settings'));
+    }
+
+    public function update(Request $request)
+    {
+        $settings = $request->except('_token');
+
+        foreach ($settings as $key => $value) {
+            $group = 'general';
+            if (str_starts_with($key, 'seo_')) $group = 'seo';
+            if (str_starts_with($key, 'scripts_')) $group = 'scripts';
+            if (str_starts_with($key, 'company_')) $group = 'company';
+            if (str_starts_with($key, 'dashboard_')) $group = 'dashboard';
+            if (str_starts_with($key, 'marketing_')) $group = 'marketing';
+
+            Setting::set($key, $value, $group);
+        }
+
+        // Limpa o cache para garantir que as novas configurações sejam aplicadas
+        Artisan::call('cache:clear');
+        Artisan::call('view:clear');
+
+        return redirect()->back()->with('success', 'Configurações globais atualizadas com sucesso.');
+    }
+
+    public function erpAd()
+    {
+        return view('admin.erp.ad');
+    }
+}