Replace KDE logo with Shift brand icon

Three white circles on dark background. Replaces start-here-kde in
the dock home button and the phone navigation bar.

CMakeLists.txt

@@ -141,6 +141,7 @@ plasma_install_package(lookandfeel org.kde.breeze.mobile look-and-feel lookandfe
 plasma_install_package(shell org.kde.plasma.mobileshell shells)
 
 add_subdirectory(bin)
+add_subdirectory(icons)
 add_subdirectory(components)
 add_subdirectory(containments)
 add_subdirectory(devices)

containments/homescreens/folio/qml/FavouritesBar.qml

@@ -159,7 +159,7 @@ MouseArea {
             anchors.centerIn: parent
             width: Math.min(parent.width, parent.height) * 0.75
             height: width
-            source: "start-here-kde"
+            source: "start-here-shift"
             active: homeMouseArea.containsMouse
         }
 

containments/taskpanel/qml/NavigationPanelComponent.qml

@@ -88,7 +88,7 @@ MobileShell.NavigationPanel {
         id: homeAction
 
         enabled: true
-        iconSource: "start-here-kde"
+        iconSource: "start-here-shift"
 
         onTriggered: {
             MobileShellState.ShellDBusClient.openHomeScreen();

icons/CMakeLists.txt

@@ -0,0 +1,10 @@
+# SPDX-FileCopyrightText: 2026 Marco Allegretti
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+include(ECMInstallIcons)
+
+ecm_install_icons(
+    ICONS sc-places-start-here-shift.svg
+    DESTINATION ${KDE_INSTALL_ICONDIR}
+    THEME hicolor
+)

icons/sc-places-start-here-shift.svg

@@ -0,0 +1,10 @@
+<svg viewBox="0 0 96 96" xmlns="http://www.w3.org/2000/svg">
+  <!-- top-left circle -->
+  <circle cx="16" cy="16" r="16" fill="#FBFBFB"/>
+  <circle cx="16" cy="16" r="5.4" fill="#31363B"/>
+  <!-- bottom-left circle -->
+  <circle cx="16" cy="80" r="16" fill="#FBFBFB"/>
+  <circle cx="16" cy="80" r="7.5" fill="#31363B"/>
+  <!-- right circle -->
+  <circle cx="80" cy="48" r="16" fill="#FBFBFB"/>
+</svg>