fix(island): neutral idle sliver, flag scroll via MouseArea

The sliver was the accent at rest, and udt had snapped the accent to the
same colour as the mic indicator (#36d190), so an idle sliver read as a
live microphone. It is Theme.overlay at rest now; captures keep their
colours whatever the wallpaper does.

The flag's WheelHandler never fired. MouseArea.onWheel, which SoundPage
already uses, does; scroll now switches layout, one step per notch.

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

1 files changed, 5 insertions, 3 deletions

diff --git a/desktop/island/Island.qml b/desktop/island/Island.qml
index b471e3c..0cb3c10 100644
--- a/desktop/island/Island.qml
+++ b/desktop/island/Island.qml
@@ -146,8 +146,10 @@ PanelWindow {
         Region { item: status; intersection: Intersection.Combine }
     }
 
-    // The visible sliver: accent at rest, the capture colours while
-    // something captures, one equal segment per active kind.
+    // The visible sliver: neutral at rest, the capture colours while
+    // something captures, one equal segment per active kind. Not the accent
+    // at rest: udt snaps the accent to a palette colour, and when it lands on
+    // green an idle sliver read exactly like a live microphone.
     Row {
         id: sliver
         x: win.cx - width / 2
@@ -156,7 +158,7 @@ PanelWindow {
         height: 4
 
         Repeater {
-            model: Privacy.roles.length ? Privacy.roles : ["accent"]
+            model: Privacy.roles.length ? Privacy.roles : ["overlay"]
             delegate: Rectangle {
                 required property string modelData
                 width: sliver.width / Math.max(1, Privacy.roles.length)