rewrite bar with quickshell

quickshell/Services/WorkspaceManager.qml

@@ -0,0 +1,55 @@
+pragma Singleton
+pragma ComponentBehavior: Bound
+
+import QtQuick
+import Quickshell
+import Quickshell.Io
+import qs.Services
+
+Singleton {
+    id: root
+
+    property ListModel workspaces
+
+    workspaces: ListModel {
+    }
+
+    function initNiri() {
+        updateNiriWorkspaces();
+    }
+
+    function updateNiriWorkspaces() {
+        const niriWorkspaces = Niri.workspaces || [];
+        workspaces.clear();
+        for (let i = 0; i < niriWorkspaces.length; i++) {
+            const ws = niriWorkspaces[i];
+            workspaces.append({
+                "id": ws.id,
+                "idx": ws.idx || 1,
+                "name": ws.name || "",
+                "output": ws.output || "",
+                "isFocused": ws.isFocused === true,
+                "isActive": ws.isActive === true,
+                "isUrgent": ws.isUrgent === true
+            });
+        }
+        workspacesChanged();
+    }
+
+    function switchToWorkspace(workspaceId) {
+            try {
+                Quickshell.execDetached(["niri", "msg", "action", "focus-workspace", workspaceId.toString()]);
+            } catch (e) {
+                console.error("Error switching Niri workspace:", e);
+            }
+    }
+
+    Connections {
+        function onWorkspacesChanged() {
+            updateNiriWorkspaces();
+        }
+
+        target: Niri
+    }
+
+}