fix(eww-touch): use nobattery bar's astal-menu launcher button

The touch bar's menu button used a bare icon-btn with no explicit
toggle side, unlike the nobattery bar's accent-coloured launcher.
Mirror the nobattery implementation (class + explicit "toggle top"
args + .menu-launcher styling) for visual and behavioral consistency
between bar variants.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TLz6HWsXCwzQ97LrLt2em6

desktopenvs/hyprlua/eww-touch/eww.scss

@@ -83,6 +83,15 @@ tooltip {
 
 }
 
+// astal-menu launcher button — accent-coloured icon, highlight on hover
+.menu-launcher {
+  color: #E40046;
+  font-size: 15pt;
+}
+.menu-launcher:hover {
+  color: #5018dd;
+}
+
 menuitem {
     border: solid;
     border-width: 3px;

desktopenvs/hyprlua/eww-touch/eww.yuck

@@ -26,7 +26,7 @@
 	(box :orientation "h" :space-evenly false :halign "start"
 		(osk)
 		(box :class "music" {"${battery}"})
-		(button :onclick "~/.config/scripts/menu-toggle.sh" :class "icon-btn" :valign "center" :width 26 :height 26 {""})
+		(button :class "music menu-launcher" :onclick "~/.config/scripts/menu-toggle.sh toggle top" {""})
 		(metric :label "󰓃 "
 		:value volume
 		:onchange "pactl set-sink-volume @DEFAULT_SINK@ {}%"