quickshell: fix some warnings

Author: fufexan

home/services/quickshell/bar/Bluetooth.qml

@@ -9,20 +9,20 @@ HoverTooltip {
     id: root
 
     property var adapter: Bluetooth.defaultAdapter
-    property var state: adapter.state
-    property var connected: adapter.devices.values.filter(d => d.state == BluetoothDeviceState.Connected)
-    property var connecting: adapter.devices.values.filter(d => d.state == BluetoothDeviceState.Connecting)
+    property var state: adapter?.state
+    property var connected: adapter?.devices.values.filter(d => d.state == BluetoothDeviceState.Connected)
+    property var connecting: adapter?.devices.values.filter(d => d.state == BluetoothDeviceState.Connecting)
 
     visible: !!adapter
 
     readonly property string iconState: {
-        if (adapter.state === BluetoothAdapterState.Disabled)
+        if (adapter?.state === BluetoothAdapterState.Disabled)
             return "disabled";
-        if (connecting.length)
+        if (connecting?.length)
             return "acquiring";
-        if (connected.length)
+        if (connected?.length)
             return "active";
-        if (adapter.state === BluetoothAdapterState.Enabled)
+        if (adapter?.state === BluetoothAdapterState.Enabled)
             return "disconnected";
         return "acquiring"; // fallback/unknown
     }
@@ -32,10 +32,10 @@ HoverTooltip {
         if (state == BluetoothAdapterState.Disabled)
             return "Bluetooth disabled";
 
-        if (connecting.length)
+        if (connecting?.length)
             return `Connecting to ${connecting[0].name}`;
 
-        if (connected.length) {
+        if (connected?.length) {
             if (connected.length > 1) {
                 return `Connected to ${connected.length} devices`;
             }

home/services/quickshell/utils/BrightnessState.qml

@@ -10,11 +10,12 @@ Singleton {
 
     PersistentProperties {
         id: persist
+        reloadableId: "persistedBrightness"
         property string screenInterface: ""
-        property string path: `/sys/class/backlight/${screenInterface}`
-        property int rawBrightness: Number(getRawBrightness.text());
-        property int max: Number(getMaxBrightness.text());
-        property real brightness: rawBrightness / max;
+        readonly property string path: `/sys/class/backlight/${screenInterface}`
+        readonly property int rawBrightness: Number(getRawBrightness.text());
+        readonly property int max: Number(getMaxBrightness.text());
+        readonly property real brightness: rawBrightness / max;
     }
 
     Process {
@@ -24,7 +25,6 @@ Singleton {
         command: ["sh", "-c", "ls -w1 /sys/class/backlight | head -1"]
         stdout: SplitParser {
             onRead: data => {
-                console.log(`found brightness interface ${data}`);
                 persist.screenInterface = data;
             }
         }