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/wob-brightness.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+# wob-brightness.sh — scroll luminosité + feedback wob
+# Usage: wob-brightness.sh up|down
+
+STEP=5
+FIFO="/tmp/wob.fifo"
+
+case "$1" in
+    up)   brightnessctl set "${STEP}%+" -q ;;
+    down) brightnessctl set "${STEP}%-" -q ;;
+esac
+
+# Feedback wob si le daemon tourne
+if [[ -p "$FIFO" ]] && pgrep -x wob >/dev/null 2>&1; then
+    BRIGHT=$(brightnessctl -m 2>/dev/null | awk -F, '{gsub(/%/,"",$4); print int($4)}')
+    echo "$BRIGHT" > "$FIFO"
+fi