quick-settings@celiopy: add applet

quick-settings@celiopy/README.md

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+# Quick Settings (Cinnamon Applet)
+
+**Quick Settings** is a modern and fully redesigned rework of the original \[cinnamon-user-applet].
+It provides an elegant and customizable way to access your essential desktop settings directly from the Cinnamon panel.
+
+![Screenshot](./screenshot.png)
+
+---
+
+## ✨ Features
+
+* **Quick toggles** for common preferences:
+
+  * Dark mode
+  * Night light
+  * Prevent sleep (inhibit suspend)
+  * …and more
+* **User avatar** with optional username and host display
+* **Session controls** (logout, lock, shutdown, restart, etc.)
+* **Highly customizable** via applet preferences
+* Define **separate themes** for light and dark mode
+
+---
+
+## ⚙️ Preferences
+
+All aspects of the applet can be tuned in its preferences dialog:
+
+* Choose which toggles to display
+* Enable/disable user information
+* Configure session buttons
+* Set light and dark mode themes
+
+---
+
+## 🚧 Status
+
+This applet is still in active development.
+Some **bugs are known and currently being fixed**, so please expect improvements over time.
+
+---
+
+## 📦 Installation
+
+1. Clone this repository into your Cinnamon applets directory:
+
+  ```bash
+  git clone https://github.com/celiopy/cinnamon-user-applet
+  cp -r cinnamon-user-applet/files/user@celiopy ~/.local/share/cinnamon/applets/
+  ```
+2. Enable it from **Cinnamon Settings → Applets**.
+3. Configure it to your liking through the **Preferences** panel.
+
+---
+
+## 🙌 Acknowledgements
+
+This project is based on and inspired by the original \[cinnamon-user-applet], but rebuilt and modernized with new design principles.