restore niri specifics, gracefully fail

modules/Bar.qml

@@ -38,7 +38,7 @@ PanelWindow {
             Layout.fillWidth: true
             spacing: 8
 
-            // M.Workspaces {}
+            M.Workspaces {}
             M.Tray { bar: bar }
             M.WindowTitle { Layout.maximumWidth: 400 }
             Item { Layout.fillWidth: true }

modules/Workspaces.qml

@@ -1,7 +1,14 @@
 import QtQuick
 import QtQuick.Layouts
 
-// Niri workspace support disabled — Quickshell.Services.Niri not available
 RowLayout {
     spacing: 4
+
+    Loader {
+        source: "WorkspacesInner.qml"
+        onStatusChanged: {
+            if (status === Loader.Error)
+                source = "";
+        }
+    }
 }

modules/WorkspacesInner.qml

@@ -0,0 +1,36 @@
+import QtQuick
+import QtQuick.Layouts
+import Quickshell.Services.Niri
+import "." as M
+
+RowLayout {
+    spacing: 4
+
+    Repeater {
+        model: Niri.workspaces
+
+        delegate: Rectangle {
+            required property var modelData
+
+            implicitWidth: 24
+            implicitHeight: 20
+            radius: 4
+            color: modelData.isFocused
+                ? M.Theme.base0D
+                : (modelData.isActive ? M.Theme.base03 : M.Theme.base02)
+
+            Text {
+                anchors.centerIn: parent
+                text: modelData.idx ?? modelData.id
+                color: modelData.isFocused ? M.Theme.base00 : M.Theme.base05
+                font.pixelSize: M.Theme.fontSize
+                font.family: M.Theme.fontFamily
+            }
+
+            MouseArea {
+                anchors.fill: parent
+                onClicked: Niri.dispatch(["action", "focus-workspace", String(modelData.id)])
+            }
+        }
+    }
+}