fix(dock): cycle niri overview groups (#3038)

quickshell/Modules/Dock/DockAppButton.qml

@@ -199,6 +199,15 @@ Item {
             }
         }
 
+        if (currentIndex < 0 && CompositorService.isNiri && NiriService.inOverview && NiriService.lastFocusedWindowId !== null) {
+            for (let i = 0; i < toplevels.length; i++) {
+                if (toplevels[i].niriWindowId === NiriService.lastFocusedWindowId) {
+                    currentIndex = i;
+                    break;
+                }
+            }
+        }
+
         const nextToplevel = toplevels[(currentIndex + 1) % toplevels.length];
         if (restoreSpecialWorkspaceWindow(nextToplevel))
             return;

quickshell/Services/NiriService.qml

@@ -24,6 +24,7 @@ Singleton {
     property var outputs: ({})
     property var windows: []
     property var displayScales: ({})
+    property var lastFocusedWindowId: null
 
     property var _realOutputs: ({})
 
@@ -483,6 +484,8 @@ Singleton {
 
     function handleWindowFocusChanged(data) {
         const focusedWindowId = data.id;
+        if (focusedWindowId !== null && focusedWindowId !== undefined)
+            lastFocusedWindowId = focusedWindowId;
 
         // Only clone windows whose focus flag changes; skip reassignment if nothing changed.
         let focusedWindow = null;
@@ -536,6 +539,8 @@ Singleton {
                 updatedWs[prop] = ws[prop];
             }
             updatedWs.active_window_id = data.active_window_id;
+            if (data.active_window_id !== null && data.active_window_id !== undefined)
+                lastFocusedWindowId = data.active_window_id;
 
             const updatedWorkspaces = {};
             for (const id in root.workspaces) {