Add documentation for port explorer module

Co-authored-by: npv2k1 <73846954+npv2k1@users.noreply.github.com>

Author: Copilot

README.md

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 This template should help get you started developing with Tauri, React and Typescript in Vite.
 
+## Features
+
+### Port Explorer
+A powerful port scanning module that allows you to scan ports on your local machine or remote IP addresses. Features include:
+- **Native TCP scanning** built with Rust
+- **Nmap integration** for advanced scanning (optional)
+- Configurable port ranges and timeout settings
+- Service detection for common ports
+- Interactive results table with filtering and sorting
+
+To access: Navigate to **Tauri > PortExplorer** in the application.
+
+See [Port Explorer Documentation](src/modules/tauri/components/port-explorer/README.md) for more details.
+
 ## Recommended IDE Setup
 
 - [VS Code](https://code.visualstudio.com/) + [Tauri](https://marketplace.visualstudio.com/items?itemName=tauri-apps.tauri-vscode) + [rust-analyzer](https://marketplace.visualstudio.com/items?itemName=rust-lang.rust-analyzer)

src/modules/tauri/components/port-explorer/README.md

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+# Port Explorer Module
+
+A powerful port scanning tool integrated into PNTools that allows you to scan ports on your local machine or remote IP addresses.
+
+## Features
+
+- **Native Port Scanning**: Fast TCP connection-based port scanning built with Rust
+- **Nmap Integration**: Optional use of nmap for more advanced scanning (when nmap is installed)
+- **Flexible Configuration**:
+  - Custom host/IP address targeting
+  - Configurable port range (1-65535)
+  - Adjustable timeout settings
+  - Toggle between native and nmap scanning methods
+- **Service Detection**: Automatically identifies common services on open ports
+- **Interactive Results Table**:
+  - Sortable columns
+  - Filterable by status (open/closed)
+  - Shows port number, status, and associated service
+
+## Usage
+
+1. Navigate to `Tauri > PortExplorer` in the application menu
+2. Configure your scan:
+   - **Target Host/IP**: Enter the hostname or IP address to scan (default: 127.0.0.1)
+   - **Port Range**: Set the start and end ports to scan
+   - **Timeout**: Adjust the connection timeout in milliseconds (default: 1000ms)
+   - **Use nmap**: Toggle to use nmap instead of native scanning (requires nmap installation)
+3. Click "Start Scan" to begin
+4. View results in the table below, showing all scanned ports with their status
+
+## Scanning Methods
+
+### Native Scanning
+- Uses Rust's TCP connection capabilities
+- Fast for small port ranges
+- No external dependencies required
+- Works on all platforms
+
+### Nmap Scanning
+- Requires nmap to be installed on your system
+- More accurate service detection
+- Better for scanning large port ranges
+- Advanced scanning capabilities
+
+To use nmap scanning:
+- **Linux/macOS**: Install via package manager (`sudo apt install nmap` or `brew install nmap`)
+- **Windows**: Download from [nmap.org](https://nmap.org/download.html)
+
+## Common Ports
+
+The module recognizes common service ports including:
+- 21: FTP
+- 22: SSH
+- 80: HTTP
+- 443: HTTPS
+- 3306: MySQL
+- 5432: PostgreSQL
+- 6379: Redis
+- 8080: HTTP-Alt
+- 27017: MongoDB
+
+And many more...
+
+## Security Note
+
+Port scanning should only be performed on networks and systems you own or have explicit permission to scan. Unauthorized port scanning may be illegal in some jurisdictions.