feat(waybar): island floating 3-pills + popups + deploy

- Config waybar 3-pills glassmorphism (left/center/right)
- Scripts : gpu, network, power-profile (toggle+luminosité/profil),
  cava daemon+reader, wob (volume/luminosité), rofi-launcher
- Popup media GTK3 : volume sortie+entrée + luminosité (vc-media-popup.py)
- Profil énergie : cycle balanced→low-power→performance avec brightnessctl
- Autostart COSMIC : waybar.desktop + wob.desktop
- Thème COSMIC Light ajouté (accent violet-chaton)
- deploy : +autostart, +sudoers platform_profile, +udev platform_profile,
  +scripts .py waybar, +CosmicTheme.Light

INSTALL/configs/waybar/scripts/power-menu.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+# power-menu.sh — menu power dédié (wofi)
+
+STYLE="$HOME/.config/wofi/power-style.css"
+
+ENTRIES=(
+    "󰌾  Verrouiller"
+    "󰒲  Veille"
+    "󰑓  Redémarrer"
+    "󰐥  Éteindre"
+)
+
+CHOICE=$(printf '%s\n' "${ENTRIES[@]}" | \
+    wofi --dmenu \
+         --prompt "⏻  " \
+         --style "$STYLE" \
+         --width 210 \
+         --height 160 \
+         --y 70 \
+         --location top_right)
+
+case "$CHOICE" in
+    "󰌾  Verrouiller")  loginctl lock-session ;;
+    "󰒲  Veille")       systemctl suspend ;;
+    "󰑓  Redémarrer")   systemctl reboot ;;
+    "󰐥  Éteindre")     systemctl poweroff ;;
+esac