quickshell: drop support for 0.2, require 0.3+

- Remove all compat code
- Rewire LegacyNetworkService to use Quickshell.Networking
- Add parentWindow to settings child windows

quickshell/Modals/PolkitAuthSurfaceModal.qml

@@ -0,0 +1,51 @@
+import QtQuick
+import Quickshell.Wayland
+import qs.Common
+import qs.Modals.Common
+import qs.Services
+
+DankModal {
+    id: root
+
+    property var parentPopout: null
+
+    layerNamespace: "dms:polkit-auth-surface"
+    modalWidth: 460
+    modalHeight: 220
+    backgroundColor: Theme.withAlpha(Theme.surfaceContainer, Theme.popupTransparency)
+    closeOnEscapeKey: true
+    closeOnBackgroundClick: false
+    allowStacking: true
+    keepPopoutsOpen: true
+
+    onOpened: {
+        if (parentPopout)
+            parentPopout.customKeyboardFocus = WlrKeyboardFocus.None;
+        Qt.callLater(() => {
+            if (contentLoader.item) {
+                contentLoader.item.reset();
+                contentLoader.item.focusPasswordField();
+            }
+        });
+    }
+
+    onDialogClosed: {
+        if (parentPopout)
+            parentPopout.customKeyboardFocus = null;
+    }
+
+    Connections {
+        target: PolkitService.agent
+        enabled: PolkitService.polkitAvailable
+
+        function onIsActiveChanged() {
+            if (!(PolkitService.agent?.isActive ?? false))
+                root.close();
+        }
+    }
+
+    content: PolkitAuthContent {
+        focus: true
+        onCloseRequested: root.close()
+    }
+}