quickshell fixes

quickshell/components/TintEffect.qml

@@ -1,11 +1,17 @@
 import QtQuick
 import QtQuick.Effects
 
-// Layer effect that recolours whatever it is applied to — used to tint the
-// white texture tiles without shipping a copy per colour.
+// Layer effect that recolours whatever it is applied to into a flat silhouette
+// of `tintColor` — used for the white texture tiles and for tray icons.
+//
+// Colorization alone keeps the source's lightness, so a dark icon came out as a
+// dark shade of the tint and all but vanished against the rail. Brightness runs
+// first and lifts every pixel to white, which leaves colorization nothing to
+// preserve but the alpha.
 MultiEffect {
     property color tintColor: "white"
 
+    brightness: 1.0
     colorization: 1.0
     colorizationColor: tintColor
 }