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/admin/subjects/index.blade.php

@@ -0,0 +1,65 @@
+@extends('layouts.admin')
+
+@section('title', 'Assuntos de Contato')
+
+@section('content')
+<div class="d-sm-flex align-items-center justify-content-between mb-4">
+    <h1 class="h3 mb-0 text-gray-800">Assuntos</h1>
+    <a href="{{ route('admin.subjects.create') }}" class="btn btn-sm btn-primary shadow-sm">
+        <i class="bi bi-plus-lg text-white-50"></i> Novo Assunto
+    </a>
+</div>
+
+@if(session('success'))
+    <div class="alert alert-success border-0 shadow-sm">{{ session('success') }}</div>
+@endif
+
+@if(session('error'))
+    <div class="alert alert-danger border-0 shadow-sm">{{ session('error') }}</div>
+@endif
+
+<div class="card shadow mb-4">
+    <div class="card-header py-3">
+        <h6 class="m-0 font-weight-bold text-primary">Lista de Assuntos</h6>
+    </div>
+    <div class="card-body">
+        <div class="table-responsive">
+            <table class="table table-bordered" width="100%" cellspacing="0">
+                <thead>
+                    <tr>
+                        <th>Nome</th>
+                        <th>Status</th>
+                        <th>Mensagens</th>
+                        <th>Ações</th>
+                    </tr>
+                </thead>
+                <tbody>
+                    @foreach($subjects as $subject)
+                    <tr>
+                        <td>{{ $subject->name }}</td>
+                        <td>
+                            <span class="badge badge-{{ $subject->active ? 'success' : 'secondary' }}">
+                                {{ $subject->active ? 'Ativo' : 'Inativo' }}
+                            </span>
+                        </td>
+                        <td>{{ $subject->messages_count ?? $subject->messages()->count() }}</td>
+                        <td>
+                            <a href="{{ route('admin.subjects.edit', $subject) }}" class="btn btn-sm btn-primary">
+                                <i class="bi bi-pencil"></i>
+                            </a>
+                            <form action="{{ route('admin.subjects.destroy', $subject) }}" method="POST" class="d-inline">
+                                @csrf
+                                @method('DELETE')
+                                <button type="submit" class="btn btn-sm btn-danger" onclick="return confirm('Tem certeza que deseja excluir este assunto?')">
+                                    <i class="bi bi-trash"></i>
+                                </button>
+                            </form>
+                        </td>
+                    </tr>
+                    @endforeach
+                </tbody>
+            </table>
+        </div>
+    </div>
+</div>
+@endsection