added backlight and fixed outbound

qml/ButtonDelegate.qml

@@ -70,13 +70,20 @@ Item {
         height: width
         radius: width / 2
         color: btnColor || "#7b007b"
+        // Idle: no ring. Feedback states draw the configured coloured outline.
+        // ColorBehavior is only enabled while in a feedback state so that on
+        // return to idle the colour snaps away immediately — otherwise a ~1px
+        // red (or green) remnant stays visible while width animates down.
         border.color: status === 1 ? delegateRoot.okColor
                      : status === 2 ? delegateRoot.errorColor
                      : status === 3 ? delegateRoot.pendingColor
                      : Qt.lighter(btnColor || "#7b007b", 1.5)
-        border.width: status === 1 || status === 2 || status === 3 ? delegateRoot.feedbackWidth : 1
+        border.width: status === 1 || status === 2 || status === 3 ? delegateRoot.feedbackWidth : 0
         Behavior on border.width { NumberAnimation { duration: 200 } }
-        Behavior on border.color { ColorAnimation { duration: 200 } }
+        Behavior on border.color {
+            enabled: status === 1 || status === 2 || status === 3
+            ColorAnimation { duration: 200 }
+        }
 
         // Hold-to-activate state (0..1). Only used in "hold" trigger mode.
         property real holdProgress: 0.0

qml/settings/MainPage.qml

@@ -26,8 +26,22 @@ Item {
         deviceIp = "—"
     }
 
-    Component.onCompleted: refreshIp()
+    function refreshBrightness() {
+        var r = systemInfo.brightnessStatus()
+        if (r.ok) {
+            brightnessSlider.value = r.percent != null ? r.percent : 100
+            brightnessHint.text = "Сейчас: " + r.percent + "%" +
+                (r.device ? (" (" + r.device + ")") : "") +
+                (r.saved != null ? (" · сохранено: " + r.saved + "%") : "")
+        } else {
+            brightnessHint.text = "Подсветка недоступна: " + (r.error || "ошибка")
+        }
+    }
 
+    Component.onCompleted: {
+        refreshIp()
+        refreshBrightness()
+    }
     Timer {
         interval: 5000
         running: true
@@ -101,6 +115,62 @@ Item {
                 onClicked: page.changePassword()
             }
 
+            Rectangle {
+                Layout.fillWidth: true
+                Layout.preferredHeight: brightnessCol.implicitHeight + 16
+                Layout.topMargin: 8
+                radius: 4
+                color: "#2a2a40"
+
+                ColumnLayout {
+                    id: brightnessCol
+                    anchors.left: parent.left
+                    anchors.right: parent.right
+                    anchors.top: parent.top
+                    anchors.margins: 8
+                    spacing: 6
+
+                    Text {
+                        Layout.fillWidth: true
+                        text: "Яркость экрана"
+                        color: "#ffffff"
+                        font.pixelSize: 14
+                        font.bold: true
+                    }
+                    Text {
+                        id: brightnessHint
+                        Layout.fillWidth: true
+                        text: "Загрузка…"
+                        color: "#aaaaaa"
+                        font.pixelSize: 12
+                        wrapMode: Text.WordWrap
+                    }
+                    LabeledSlider {
+                        id: brightnessSlider
+                        Layout.fillWidth: true
+                        label: "Яркость %"
+                        from: 1
+                        to: 100
+                        stepSize: 1
+                        value: 100
+                    }
+                    SettingsButton {
+                        Layout.fillWidth: true
+                        text: "Применить яркость"
+                        onClicked: {
+                            var r = systemInfo.setBrightness(Math.round(brightnessSlider.value))
+                            if (r.ok) {
+                                brightnessHint.text = "Сейчас: " + r.percent + "%" +
+                                    (r.device ? (" (" + r.device + ")") : "") +
+                                    (r.saved != null ? (" · сохранено: " + r.saved + "%") : "")
+                            } else {
+                                brightnessHint.text = "Ошибка: " + (r.error || "неизвестно")
+                            }
+                        }
+                    }
+                }
+            }
+
             Text {
                 Layout.fillWidth: true
                 Layout.topMargin: 8