Make credential setup keyboard-safe and verifiable

config/dot/quickshell/services/HomeAssistantConfig.qml

@@ -18,6 +18,7 @@ Singleton {
     property bool configured: false
     property string lastError: ""
     property string pendingPayload: ""
+    property var refreshHomeAssistant: function() { HomeAssistant.refresh(); }
     readonly property bool busy: statusProc.running || writeProc.running
 
     signal configurationSaved
@@ -52,7 +53,7 @@ Singleton {
         root.lastError = "";
         if (saved) {
             root.configurationSaved();
-            HomeAssistant.refresh();
+            root.refreshHomeAssistant();
         }
     }
 
@@ -102,7 +103,6 @@ Singleton {
         command: [root.helperPath, "write"]
         stdinEnabled: true
         stdout: StdioCollector {
-            id: writeOutput
             onStreamFinished: root.applyResult(this.text, true)
         }
         onStarted: {