Added documentation for configuration files

docs/CONFIGS.md

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+# 📁 Configuration Files Guide
+
+This document provides a simple explanation of the configuration files present in the `configs/` folder. These files help customize the appearance and behavior of the Linux environment.
+
+---
+
+## 🔹 Niri
+Niri is a **window manager**.
+
+It controls how application windows are arranged and managed on the screen. Instead of manually resizing windows, Niri can automatically organize them into a clean layout.
+
+**What it helps with:**
+- Arranging windows side by side  
+- Switching between open applications  
+- Managing workspace layouts  
+
+---
+
+## 🔹 Waybar
+Waybar is a **status bar** that appears on the screen (usually at the top or bottom).
+
+It displays useful system information so you can quickly check important details.
+
+**What it shows:**
+- Battery level 🔋  
+- Time and date ⏰  
+- Network/Wi-Fi status 📶  
+
+---
+
+## 🔹 Rofi
+Rofi is an **application launcher and utility tool**.
+
+It allows you to quickly open applications or switch between tasks using your keyboard, making your workflow faster and more efficient.
+
+**What it helps with:**
+- Launching applications quickly  
+- Searching and switching between open programs  
+- Reducing the need to use a mouse  
+
+---
+
+## ✅ Summary
+Together, these configuration files help create a smooth, efficient, and customizable Linux experience by improving window management, system visibility, and application access.