fix(quickshell): keep text sharp under zoom and on the lock screen

Native-rendered glyphs are rasterised at rest size, so anything moved
with `scale` stretched a bitmap and came out blurred and stepped.

- Icons render as curves, so their pulse and bump stay smooth.
- The lock face is laid out at uiScale instead of being drawn at
  1080p size and scaled by up to 1.3, and it sits on whole pixels. Its
  native labels now land on the pixel grid.
- The OSD rises into place instead of scaling in.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

quickshell/components/Icon.qml

@@ -13,7 +13,11 @@ Text {
     color: Theme.primary
     verticalAlignment: Text.AlignVCenter
     horizontalAlignment: Text.AlignHCenter
-    renderType: Text.NativeRendering
+    // Curve glyphs, not native ones. Native glyphs are rasterised once at rest
+    // size and the bitmap is stretched when `scale` moves, so every pulse and
+    // bump came out blurred and stepped. Curves are drawn from the outline at
+    // whatever size the icon is at that frame.
+    renderType: Text.CurveRendering
 
     Behavior on color {
         ColorAnimation { duration: Theme.durBase }