Merge upstream quattro for the Qt 6.12 palette fix (#14553)

Qt 6.12 shadows the bare Color singleton, so the bar and every Color
role read undefined on fresh installs. Keep our I18n text in the four
conflicting files, qualify #14433's notification button color, give the
new dictation menu rows and notifications Chinese, and drop table
entries for the removed Voxtype and FIDO2 texts.

shell/plugins/image-picker/ImagePicker.qml

@@ -5,6 +5,7 @@ import QtQuick
 import QtQuick.Effects
 import QtQuick.Shapes
 import qs.Commons
+import qs.Commons as Commons
 import qs.Ui
 import "ImagePickerModel.js" as ImagePickerModel
 
@@ -37,14 +38,14 @@ Item {
   property string themeRows: ""
   property bool themeMode: false
   property bool themeOpenPending: false
-  // Bound to the central [image-picker] section in shell.toml via Color.qml.
+  // Bound to the central [image-picker] section in shell.toml via Commons.Color.qml.
   // `dimColor` tints unselected slices and text outlines on top of the scrim;
   // it intentionally tracks the foundational background, not a surface role.
-  property color dimColor: Color.background
-  property color foreground: Color.imagePicker.text
-  property color scrim: Color.imagePicker.scrim
-  property color selectedBorder: Color.imagePicker.selectedBorder
-  property color unselectedBorder: Color.imagePicker.unselectedBorder
+  property color dimColor: Commons.Color.background
+  property color foreground: Commons.Color.imagePicker.text
+  property color scrim: Commons.Color.imagePicker.scrim
+  property color selectedBorder: Commons.Color.imagePicker.selectedBorder
+  property color unselectedBorder: Commons.Color.imagePicker.unselectedBorder
   property int expandedWidth: 768
   property int expandedHeight: 475
   property int sliceWidth: 108
@@ -274,7 +275,29 @@ Item {
   property var imageArray: []
   readonly property var matchingImageIndices: ImagePickerModel.matchingIndices(imageArray, filterText)
   onMatchingImageIndicesChanged: updateVisibleItems()
-  onSelectedIndexChanged: updateVisibleItems()
+  onSelectedIndexChanged: {
+    updateVisibleItems()
+    introPrepareTimer.restart()
+  }
+  onThemeModeChanged: if (themeMode) introPrepareTimer.restart()
+
+  Timer {
+    id: introPrepareTimer
+    interval: 75
+    onTriggered: {
+      if (root.opened && root.themeMode && !introPrepare.running) {
+        introPrepare.theme = root.nameForPath(root.currentPath())
+        introPrepare.command = ["omarchy-theme-bg-boot-intro", "--prepare-theme", root.nameForPath(root.currentPath())]
+        introPrepare.running = true
+      }
+    }
+  }
+
+  Process {
+    id: introPrepare
+    property string theme: ""
+    onExited: if (root.opened && root.themeMode && theme !== root.nameForPath(root.currentPath())) introPrepareTimer.restart()
+  }
 
   function updateVisibleItems() {
     ImagePickerModel.syncWindow(visibleImages, ImagePickerModel.visibleWindow(matchingImageIndices, selectedIndex, previewRadius))