Single panel mode

modules/home/wayland/apps/eww/bar/scripts/panel-toggle

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+# Toggle the shared popup window between panels (sys, net, calendar).
+# Same panel clicked again → close. Different panel → close and reopen
+# so the window always appears fully rendered with no transparent flash.
+PANEL="$1"
+CURRENT=$(eww state 2>/dev/null | grep '^active-panel:' | sed 's/^active-panel: //' | tr -d '"')
+
+if [ "$CURRENT" = "$PANEL" ]; then
+  eww close popup
+  eww update active-panel=""
+else
+  eww close popup 2>/dev/null
+  eww update active-panel="$PANEL"
+  SCREEN=$(hyprctl monitors -j 2>/dev/null | jq -r '.[] | select(.focused == true) | .name' | head -n1)
+  [ -n "$SCREEN" ] && eww open popup --screen "$SCREEN" || eww open popup
+fi