perf: replace notifcenter repeater with listview for virtualization

modules/NotifCenter.qml

@@ -64,24 +64,32 @@ M.PopupPanel {
         }
     }
 
-    property var _delegates: []
-
     property var _pendingDismissIds: []
 
     function _cascadeDismiss() {
-        const dels = _delegates.filter(d => d && d.modelData && !d.modelData.closed);
-        if (dels.length === 0)
+        const list = M.NotifService.list;
+        if (list.length === 0)
             return;
 
-        _pendingDismissIds = dels.map(d => d.modelData.id);
+        _pendingDismissIds = list.map(n => n.id);
 
-        for (let i = 0; i < dels.length; i++) {
-            const d = dels[i];
-            const isLast = (i === dels.length - 1);
+        const visibles = [];
+        for (let i = 0; i < list.length; i++) {
+            const d = notifList.itemAtIndex(i);
+            if (d && d.modelData?.state !== "dismissing")
+                visibles.push(d);
+        }
+
+        if (visibles.length === 0) {
+            _finishCascade();
+            return;
+        }
+
+        for (let i = 0; i < visibles.length; i++) {
             _cascadeTimer.createObject(menuWindow, {
-                _target: d,
+                _target: visibles[i],
                 _delay: i * 60,
-                _isLast: isLast
+                _isLast: i === visibles.length - 1
             });
         }
     }
@@ -132,25 +140,12 @@ M.PopupPanel {
     }
 
     // Notification list (scrollable)
-    Item {
+    ListView {
+        id: notifList
         width: menuWindow.panelWidth
-        height: Math.min(notifFlick.contentHeight, _maxHeight)
-        readonly property real _itemHeight: 60
-        readonly property real _maxHeight: _itemHeight * (M.Modules.notifications.maxVisible || 10)
-
-        Flickable {
-            id: notifFlick
-            anchors.fill: parent
-            contentWidth: width
-            contentHeight: notifCol.implicitHeight
+        height: Math.min(contentHeight, 60 * (M.Modules.notifications.maxVisible || 10))
         clip: true
         boundsBehavior: Flickable.StopAtBounds
-
-            Column {
-                id: notifCol
-                width: parent.width
-
-                Repeater {
         model: M.NotifService.list
 
         delegate: Item {
@@ -182,15 +177,7 @@ M.PopupPanel {
                 _dismissAnim.start();
             }
 
-                        Component.onCompleted: {
-                            menuWindow._delegates.push(notifItem);
-                            fadeIn.start();
-                        }
-                        Component.onDestruction: {
-                            const idx = menuWindow._delegates.indexOf(notifItem);
-                            if (idx >= 0)
-                                menuWindow._delegates.splice(idx, 1);
-                        }
+            Component.onCompleted: fadeIn.start()
 
             NumberAnimation {
                 id: fadeIn
@@ -419,10 +406,7 @@ M.PopupPanel {
                 onClicked: _dismissAnim.start()
             }
         }
-                } // Repeater
-            } // Column
-        } // Flickable
-    } // Item
+    }
 
     // Empty state
     Text {