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/edit.blade.php

@@ -0,0 +1,46 @@
+@extends('layouts.admin')
+
+@section('title', 'Editar Assunto')
+
+@section('content')
+<div class="d-sm-flex align-items-center justify-content-between mb-4">
+    <h1 class="h3 mb-0 text-gray-800">Editar Assunto</h1>
+    <a href="{{ route('admin.subjects.index') }}" class="btn btn-sm btn-secondary shadow-sm">
+        <i class="bi bi-arrow-left text-white-50"></i> Voltar
+    </a>
+</div>
+
+<div class="row justify-content-center">
+    <div class="col-lg-6">
+        <div class="card shadow mb-4">
+            <div class="card-header py-3">
+                <h6 class="m-0 font-weight-bold text-primary">Assunto: {{ $subject->name }}</h6>
+            </div>
+            <div class="card-body">
+                <form action="{{ route('admin.subjects.update', $subject) }}" method="POST">
+                    @csrf
+                    @method('PUT')
+
+                    <div class="form-group mb-3">
+                        <label class="font-weight-bold">Nome do Assunto</label>
+                        <input type="text" name="name" class="form-control @error('name') is-invalid @enderror" value="{{ old('name', $subject->name) }}" required>
+                        @error('name') <div class="invalid-feedback">{{ $message }}</div> @enderror
+                    </div>
+
+                    <div class="form-group mb-4">
+                        <label class="font-weight-bold">Status</label>
+                        <select name="active" class="form-control">
+                            <option value="1" {{ old('active', $subject->active) ? 'selected' : '' }}>Ativo (Visível no site)</option>
+                            <option value="0" {{ old('active', $subject->active) ? '' : 'selected' }}>Inativo (Oculto no site)</option>
+                        </select>
+                    </div>
+
+                    <button type="submit" class="btn btn-primary btn-block py-2 fw-bold shadow-sm">
+                        <i class="bi bi-floppy me-1"></i> Salvar Alterações
+                    </button>
+                </form>
+            </div>
+        </div>
+    </div>
+</div>
+@endsection