NPanel refactor - 1st pass: SidePanel and settings an new logic

Services/CavaService.qml

@@ -37,7 +37,7 @@ Singleton {
   Process {
     id: process
     stdinEnabled: true
-    running: (Settings.data.audio.visualizerType !== "none") && PanelService.sidePanel.isLoaded
+    running: (Settings.data.audio.visualizerType !== "none") && PanelService.sidePanel.active
     command: ["cava", "-p", "/dev/stdin"]
     onExited: {
       stdinEnabled = true

Services/PanelService.qml

@@ -5,8 +5,16 @@ import Quickshell
 Singleton {
   id: root
 
+  // A ref. to the sidePanel, so it's accessible from other services
+  property var sidePanel: null
+
   // Currently opened panel
   property var openedPanel: null
 
-  property var sidePanel: null
+  function registerOpen(panel) {
+    if (openedPanel && openedPanel != panel) {
+      openedPanel.close()
+    }
+    openedPanel = panel
+  }
 }

Services/ScalingService.qml

@@ -9,7 +9,15 @@ Singleton {
   // -------------------------------------------
   // Manual scaling via Settings
   function scale(aScreen) {
-    return scaleByName(aScreen.name)
+    try {
+      if (aScreen !== undefined && aScreen.name !== undefined) {
+        return scaleByName(aScreen.name)
+      }
+    } catch (e) {
+
+      //Logger.warn(e)
+    }
+    return 1.0
   }
 
   function scaleByName(aScreenName) {