Complete mock secure web application with:

- User registration and login with CSRF protection
- SQL injection prevention and XSS protection
- Real-time form validation
- Password strength requirements
- Show/hide password toggle
- Modern dark theme UI
- Routes for /login, /register, /home, /logout
- API endpoints for CRUD operations
- Prettier and ESLint configure

README.md

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+# Secure Application
+
+A secure web application with PHP backend and JavaScript frontend featuring authentication, data management, and modern UI.
+
+## Features
+
+- User registration and login with secure password handling
+- CSRF protection
+- SQL injection prevention (PDO prepared statements)
+- XSS protection
+- Real-time form validation
+- Password strength requirements
+- Show/hide password toggle
+- Responsive dark theme UI
+
+## Tech Stack
+
+- **Backend**: PHP 8+ with PostgreSQL
+- **Frontend**: Vanilla JavaScript, HTML, CSS
+- **Database**: PostgreSQL
+
+## Requirements
+
+- PHP 8.0+
+- PostgreSQL
+- Node.js (for formatting/linting)
+
+## Setup
+
+1. **Install dependencies**:
+   ```bash
+   npm install
+   composer install
+   ```
+
+2. **Configure database**:
+   Copy `.env.example` to `.env` and update with your database credentials:
+   ```
+   DB_HOST=localhost
+   DB_NAME=securecode
+   DB_USER=your_username
+   DB_PASSWORD=your_password
+   DB_PORT=5432
+   ```
+
+3. **Create database**:
+   ```bash
+   psql -h localhost -U your_username -d postgres -c "CREATE DATABASE securecode;"
+   ```
+
+4. **Run migrations**:
+   ```bash
+   psql -h localhost -U your_username -d securecode -f config/schema.sql
+   ```
+
+5. **Start development server**:
+   ```bash
+   php -S localhost:8000 -t public
+   ```
+
+6. **Access the app**: http://localhost:8000
+
+## Development
+
+- **Format code**: `npm run format`
+- **Lint code**: `npm run lint`
+
+## Project Structure
+
+```
+├── config/
+│   ├── database.php      # Database connection & helpers
+│   └── schema.sql       # Database schema
+├── api/
+│   └── index.php       # API endpoints
+├── public/
+│   ├── index.php       # Router
+│   ├── views/          # Page templates
+│   ├── js/             # JavaScript files
+│   └── styles/         # CSS files
+└── .env.example        # Environment template
+```
+
+## Password Requirements
+
+- Minimum 8 characters
+- At least one uppercase letter
+- At least one lowercase letter
+- At least one number
+- At least one special character