feat(root): add native Wayland display refresh rate control

Add native Wayland refresh rate control using zwlr_output_manager_v1, remove reliance on xrandr, and document limitations for GNOME/KDE. This enables on‑the‑fly Hz changes without external tools.

- New Feature: Native Wayland refresh rate management
- Enhancement: Updated requirements and limitations sections
- Enhancement: Improved documentation for refresh rate control

README.md

@@ -24,7 +24,7 @@ Built with performance and simplicity in mind, it talks directly to your system'
 - **Battery Health**: Modern batteries hate being at 100% all the time. Set custom charge limits (like 80%) to significantly extend your battery's lifespan.
 - **Power Tuning**: Switch through performance profiles or set hard CPU power (TDP) limits in Watts to keep things cool or let them loose.
 - **Intelligent Cooling**: Force your fans into Performance, Balanced, or Quiet modes (supporting ASUS and Lenovo laptops).
-- **Display Refresh Rate**: Easily query available refresh rates and change your active display's Hz on-the-fly (Multi-backend natively supports **Hyprland, Sway, KDE Plasma, GNOME, and X11**).
+- **Display Refresh Rate**: Easily query available refresh rates and change your active display's Hz on-the-fly (100% native Rust Wayland implementation using `zwlr_output_manager_v1` for wlroots compositors like Sway and Hyprland).
 - **Touchpad Toggle**: Quickly enable or disable your touchpad from the terminal when using an external mouse.
 - **Sleep Inhibitor**: Running a long compile or a critical download? Use the inhibitor to stop your laptop from falling asleep mid task.
 - **Instant Status**: Get a bird's eye view of your hardware state, battery health, and current limits with one simple command.
@@ -49,6 +49,10 @@ cargo install --path .
 #### Requirements
 - **systemd**: For sleep inhibitor (`systemd-inhibit`)
 - **X11/NVIDIA Tools**: `xrandr`, `nvidia-settings` for GPU management
+- **Wayland Display**: Built entirely natively using `wayland-client` and `wayland-protocols-wlr` (no `wlr-randr` required!)
+
+#### Limitations
+- **GNOME / KDE Plasma (Wayland)**: The display refresh rate feature relies heavily on the `zwlr_output_manager_v1` protocol. This protocol is exclusive to wlroots-based compositors (like Sway and Hyprland). GNOME and KDE use their own disparate internal display protocols, meaning this feature will **not work** out-of-the-box on those Desktop Environments.
 
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