launcher v2: performance optimizations

- Use ListView in all tab
- use filesystem cache to speed up first launch
- apply highlights to visible models

quickshell/Modals/DankLauncherV2/TileItem.qml

@@ -23,21 +23,6 @@ Rectangle {
     border.width: isSelected ? 2 : 0
     border.color: Theme.primary
 
-    function highlightText(text, query, baseColor) {
-        if (!text || !query || query.length === 0)
-            return text;
-        var lowerText = text.toLowerCase();
-        var lowerQuery = query.toLowerCase();
-        var idx = lowerText.indexOf(lowerQuery);
-        if (idx === -1)
-            return text;
-        var before = text.substring(0, idx);
-        var match = text.substring(idx, idx + query.length);
-        var after = text.substring(idx + query.length);
-        var highlightColor = Theme.primary;
-        return '<span style="color:' + baseColor + '">' + before + '</span>' + '<span style="color:' + highlightColor + '; font-weight:600">' + match + '</span>' + '<span style="color:' + baseColor + '">' + after + '</span>';
-    }
-
     readonly property string toplevelId: item?.data?.toplevelId ?? ""
     readonly property var waylandToplevel: {
         if (!toplevelId || !item?.pluginId)
@@ -133,14 +118,8 @@ Rectangle {
                     id: labelText
                     anchors.fill: parent
                     anchors.margins: Theme.spacingXS
-                    text: {
-                        var query = root.controller?.searchQuery ?? "";
-                        var name = root.item?.name ?? "";
-                        if (!query)
-                            return name;
-                        return root.highlightText(name, query, Theme.surfaceText);
-                    }
-                    textFormat: root.controller?.searchQuery ? Text.RichText : Text.PlainText
+                    text: root.item?._hName ?? root.item?.name ?? ""
+                    textFormat: root.item?._hRich ? Text.RichText : Text.PlainText
                     font.pixelSize: Theme.fontSizeSmall
                     font.family: Theme.fontFamily
                     color: Theme.surfaceText