some qs fixes

quickshell/services/GameMode.qml

@@ -0,0 +1,24 @@
+pragma Singleton
+
+import QtQuick
+import Quickshell
+
+// A fullscreen game is on screen. Hyprland decides (~/.config/hypr/lua/gamemode.lua)
+// and says so with `qs ipc call shell gameMode true|false`.
+//
+// The game covers the hull, but a covered surface still renders: Hyprland keeps
+// sending it frame callbacks, so anything that moves keeps redrawing at the
+// panel's refresh rate with nobody watching. While a game runs the shell stops
+// what it does on its own:
+//
+//   Sys          the fluxo stream, so no telemetry wakes the shell
+//   Brightness   the backlight poll
+//   Media        the position tick, and the equaliser on the bar
+//   Rail         the critical battery's pulse
+//   Workspaces   the urgent pip's pulse
+//   Notifs       toasts, except critical ones; everything still reaches the log
+//
+// Anything you ask for yourself, the OSD included, still shows.
+Singleton {
+    property bool active: false
+}