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/Modules/Products/Models/Product.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Modules\Products\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsTo;
+
+class Product extends Model
+{
+    protected $fillable = ['category_id', 'name', 'slug', 'description', 'price', 'image', 'active'];
+
+    public function category(): BelongsTo
+    {
+        return $this->belongsTo(ProductCategory::class, 'category_id');
+    }
+}

app/Modules/Products/Models/ProductCategory.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Modules\Products\Models;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+
+class ProductCategory extends Model
+{
+    protected $fillable = ['name', 'slug', 'description', 'image', 'active', 'order'];
+
+    public function products(): HasMany
+    {
+        return $this->hasMany(Product::class, 'category_id');
+    }
+}