add: manus-ai waybar_power_profiles_integration.md for niri desktop manager

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+# Integrating Power Profiles Daemon into Waybar
+
+This guide explains how to integrate the `power-profiles-daemon.service` into Waybar, providing a toggleable button to switch between power profiles.
+
+## Prerequisites
+
+Ensure you have the following installed:
+- `waybar` (version 0.9.22 or later recommended)
+- `power-profiles-daemon`
+
+## 1. Waybar Configuration
+
+Add the `power-profiles-daemon` module to your Waybar configuration file (typically located at `~/.config/waybar/config`).
+
+```json
+{
+    "modules-right": [
+        "power-profiles-daemon",
+        // ... other modules
+    ],
+
+    "power-profiles-daemon": {
+        "format": "{icon}",
+        "tooltip-format": "Power profile: {profile}\nDriver: {driver}",
+        "tooltip": true,
+        "format-icons": {
+            "default": "",
+            "performance": "⚡",
+            "balanced": "",
+            "power-saver": ""
+        }
+    }
+}
+```
+
+## 2. Automatic Toggling
+
+Waybar's built-in `power-profiles-daemon` module automatically cycles through available profiles when clicked. You don't need a separate script for basic toggling. However, if you want a custom script for more complex behavior, you can use a `custom/power_profile` module instead.
+
+### Using the Built-in Module (Recommended)
+
+The built-in module is the most efficient way to handle this. It interacts directly with the daemon via D-Bus.
+
+### Custom Toggle Script (Optional)
+
+If you prefer a custom script, create a file at `~/.config/waybar/scripts/toggle_power_profile.sh`:
+
+```bash
+#!/bin/bash
+
+current_profile=$(powerprofilesctl get)
+
+case $current_profile in
+    "power-saver")
+        powerprofilesctl set balanced
+        ;;
+    "balanced")
+        powerprofilesctl set performance
+        ;;
+    "performance")
+        powerprofilesctl set power-saver
+        ;;
+    *)
+        powerprofilesctl set balanced
+        ;;
+esac
+```
+
+Make it executable:
+```bash
+chmod +x ~/.config/waybar/scripts/toggle_power_profile.sh
+```
+
+Then, use a custom module in your Waybar config:
+
+```json
+"custom/power_profile": {
+    "exec": "powerprofilesctl get",
+    "interval": 30,
+    "on-click": "~/.config/waybar/scripts/toggle_power_profile.sh",
+    "format": "Profile: {}"
+}
+```
+
+## 3. Styling (Optional)
+
+You can style the module in your `style.css`:
+
+```css
+#power-profiles-daemon {
+    padding-left: 10px;
+    padding-right: 10px;
+}
+
+#power-profiles-daemon.performance {
+    background-color: #f38ba8;
+    color: #1e1e2e;
+}
+
+#power-profiles-daemon.balanced {
+    background-color: #a6e3a1;
+    color: #1e1e2e;
+}
+
+#power-profiles-daemon.power-saver {
+    background-color: #89b4fa;
+    color: #1e1e2e;
+}
+```
+
+## References
+
+[1] [Arch Linux Manual: waybar-power-profiles-daemon(5)](https://man.archlinux.org/man/extra/waybar/waybar-power-profiles-daemon.5.en)
+[2] [power-profiles-daemon GitLab](https://gitlab.freedesktop.org/hadess/power-profiles-daemon)