Add brightness/contrast sliders, input source switching, and 9-language localization

- Add VCP commands for brightness (10), contrast (12), input source (60)
- Fix UTF-16 encoding for monitor data parsing
- Add system tray app with monitor controls
- Add localization for en, es, fr, de, zh, ja, pt, it, hi
- Update to .NET 9.0
- Add LICENSE and README

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -0,0 +1,74 @@
+# ControlMyMonitorManagement
+
+A Windows desktop application for controlling monitor settings via DDC/CI (Display Data Channel/Command Interface). Adjust brightness, contrast, power state, and other display parameters across multiple monitors.
+
+## Features
+
+- **Multi-Monitor Support** - Detect and control multiple connected displays
+- **Brightness & Contrast Sliders** - Easy adjustment with real-time feedback
+- **Input Source Switching** - Switch between VGA, DVI, HDMI, DisplayPort (auto-detected from monitor)
+- **Power Management** - Turn monitors on, off, or into sleep mode
+- **System Tray Integration** - DellMonitorControl app with taskbar tray popup
+- **9 Languages** - Auto-detects system language (en, es, fr, de, zh, ja, pt, it, hi)
+
+## Requirements
+
+- Windows OS
+- .NET 7.0 SDK
+- DDC/CI compatible monitor(s)
+
+## Build
+
+```bash
+# Clone the repository
+git clone https://github.com/yourusername/ControlMyMonitorManagement.git
+cd ControlMyMonitorManagement
+
+# Build the solution
+dotnet build ControlMyMonitorManagement.sln
+
+# Run the main application
+dotnet run --project ControlMyMonitorManagement/ControlMyMonitorManagement.csproj
+
+# Run the Dell-specific application (with system tray)
+dotnet run --project DellMonitorControl/DellMonitorControl.csproj
+```
+
+## Project Structure
+
+| Project | Description |
+|---------|-------------|
+| **ControlMyMonitorManagement** | Main WPF application with full UI |
+| **DellMonitorControl** | Lightweight app with system tray integration |
+| **Library** | Core business logic and DDC/CI operations |
+| **CMMModel** | Data models for monitor status |
+| **CMMService** | Service layer interfaces |
+| **Language** | Localization support |
+| **Tester** | NUnit test project |
+
+## Common VCP Codes
+
+| Code | Name | Values |
+|------|------|--------|
+| D6 | Power Mode | 1=On, 4=Sleep, 5=Off |
+| 10 | Brightness | 0-100 |
+| 12 | Contrast | 0-100 |
+| 60 | Input Source | 1=VGA, 3=DVI, 15=DisplayPort, 17=HDMI |
+
+## How It Works
+
+This application uses DDC/CI protocol to communicate with monitors through the display cable (HDMI, DisplayPort, DVI, VGA). DDC/CI allows software to send commands directly to the monitor's firmware to adjust settings that would normally require using the monitor's physical buttons.
+
+## Credits
+
+- **Original Project**: [DangWang](https://github.com/poyingHAHA) - ControlMyMonitorManagement
+- **DDC/CI Tool**: [Nir Sofer](https://www.nirsoft.net) - ControlMyMonitor.exe (freeware)
+- **Enhancements by David H Friedel Jr**: Brightness/contrast sliders, input source switching, 9-language localization
+
+## License
+
+This project contains multiple components with different terms:
+
+- **Original code by DangWang**: No explicit license provided
+- **ControlMyMonitor.exe**: Freeware by Nir Sofer - free distribution allowed, no commercial use, no modification
+- **New contributions (sliders, localization, etc.)**: MIT License