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/Mail/ContactReplyMail.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace App\Mail;
+
+use App\Models\ContactMessage;
+use Illuminate\Bus\Queueable;
+use Illuminate\Mail\Mailable;
+use Illuminate\Mail\Mailables\Content;
+use Illuminate\Mail\Mailables\Envelope;
+use Illuminate\Queue\SerializesModels;
+
+class ContactReplyMail extends Mailable
+{
+    use Queueable, SerializesModels;
+
+    public $contact;
+    public $replyMessage;
+
+    /**
+     * Create a new message instance.
+     */
+    public function __construct(ContactMessage $contact, $replyMessage)
+    {
+        $this->contact = $contact;
+        $this->replyMessage = $replyMessage;
+    }
+
+    /**
+     * Get the message envelope.
+     */
+    public function envelope(): Envelope
+    {
+        return new Envelope(
+            subject: 'Re: ' . ($this->contact->subject->name ?? 'Contato SysSiteCMS'),
+        );
+    }
+
+    /**
+     * Get the message content definition.
+     */
+    public function content(): Content
+    {
+        return new Content(
+            view: 'emails.contact-reply',
+        );
+    }
+}