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/gpu.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# gpu.sh — NVIDIA GPU stats → JSON waybar
+
+DATA=$(nvidia-smi --query-gpu=utilization.gpu,temperature.gpu,memory.used,memory.total \
+    --format=csv,noheader,nounits 2>/dev/null)
+
+if [[ -z "$DATA" ]]; then
+    echo '{"text":"","tooltip":"GPU non disponible","class":"","percentage":0}'
+    exit 0
+fi
+
+LOAD=$(echo "$DATA" | awk -F', ' '{print $1}')
+TEMP=$(echo "$DATA" | awk -F', ' '{print $2}')
+MEM_USED=$(echo "$DATA" | awk -F', ' '{print $3}')
+MEM_TOTAL=$(echo "$DATA" | awk -F', ' '{print $4}')
+
+if   (( LOAD > 90 )); then CLASS="critical"
+elif (( LOAD > 70 )); then CLASS="warning"
+else                       CLASS="normal"
+fi
+
+TEXT="󰢮 ${LOAD}%  ${TEMP}°"
+TOOLTIP="󰢮 GPU\nCharge : ${LOAD}%\nTempérature : ${TEMP}°C\nVRAM : ${MEM_USED} / ${MEM_TOTAL} MiB"
+
+printf '{"text":"%s","tooltip":"%s","class":"%s","percentage":%s}\n' \
+    "$TEXT" "$TOOLTIP" "$CLASS" "$LOAD"