Календарь: кнопки не налезают, без прозрачности, круглые, с учётом длинных месяцев

- RowLayout spacing 4, ToolButton 32x32 Layout.preferred 32, background Rectangle color Theme.surface (не прозрачный) + hover Theme.surfaceHover + pressed Theme.surfaceSelected, border Theme.border/Strong/accent, radius 16, contentItem Label
- Label месяца: Layout.minimumWidth 80 preferred 120 fillWidth, elide Right, maximumLineCount 1, NoWrap, pixelSize 12, bold, для 'сентябрь 2026' (8 букв) и узких окон
- Hover/pressed визуально меняются, круглые

qml/panels/MonthCalendar.qml

@@ -36,26 +36,88 @@ Item {
 
         RowLayout {
             Layout.fillWidth: true
+            spacing: 4
+            // Кнопка Назад — круглая, без прозрачности
             ToolButton {
                 text: "‹"
                 font.pixelSize: 16
+                font.bold: true
+                implicitWidth: 32
+                implicitHeight: 32
+                Layout.preferredWidth: 32
+                Layout.preferredHeight: 32
+                Layout.alignment: Qt.AlignVCenter
+                background: Rectangle {
+                    color: parent.pressed ? Theme.surfaceSelected : (parent.hovered ? Theme.surfaceHover : Theme.surface)
+                    border.color: parent.pressed ? Theme.accent : (parent.hovered ? Theme.borderStrong : Theme.border)
+                    radius: 16
+                }
+                contentItem: Label {
+                    text: parent.text
+                    font: parent.font
+                    color: Theme.text
+                    horizontalAlignment: Text.AlignHCenter
+                    verticalAlignment: Text.AlignVCenter
+                }
                 onClicked: cal.currentMonth = new Date(year, month - 1, 1)
             }
             Label {
                 Layout.fillWidth: true
+                Layout.minimumWidth: 80
+                Layout.preferredWidth: 120
                 horizontalAlignment: Text.AlignHCenter
+                verticalAlignment: Text.AlignVCenter
                 font.bold: true
                 color: Theme.text
+                font.pixelSize: 12
+                elide: Text.ElideRight
+                maximumLineCount: 1
+                wrapMode: Text.NoWrap
                 text: Qt.locale().monthName(month, Locale.LongFormat) + " " + year
             }
             ToolButton {
                 text: "›"
                 font.pixelSize: 16
+                font.bold: true
+                implicitWidth: 32
+                implicitHeight: 32
+                Layout.preferredWidth: 32
+                Layout.preferredHeight: 32
+                Layout.alignment: Qt.AlignVCenter
+                background: Rectangle {
+                    color: parent.pressed ? Theme.surfaceSelected : (parent.hovered ? Theme.surfaceHover : Theme.surface)
+                    border.color: parent.pressed ? Theme.accent : (parent.hovered ? Theme.borderStrong : Theme.border)
+                    radius: 16
+                }
+                contentItem: Label {
+                    text: parent.text
+                    font: parent.font
+                    color: Theme.text
+                    horizontalAlignment: Text.AlignHCenter
+                    verticalAlignment: Text.AlignVCenter
+                }
                 onClicked: cal.currentMonth = new Date(year, month + 1, 1)
             }
             ToolButton {
                 text: "\u2302"
                 font.pixelSize: 12
+                implicitWidth: 32
+                implicitHeight: 32
+                Layout.preferredWidth: 32
+                Layout.preferredHeight: 32
+                Layout.alignment: Qt.AlignVCenter
+                background: Rectangle {
+                    color: parent.pressed ? Theme.surfaceSelected : (parent.hovered ? Theme.surfaceHover : Theme.surface)
+                    border.color: parent.pressed ? Theme.accent : (parent.hovered ? Theme.borderStrong : Theme.border)
+                    radius: 16
+                }
+                contentItem: Label {
+                    text: parent.text
+                    font: parent.font
+                    color: Theme.text
+                    horizontalAlignment: Text.AlignHCenter
+                    verticalAlignment: Text.AlignVCenter
+                }
                 ToolTip.text: qsTr("Сегодня")
                 ToolTip.visible: hovered
                 onClicked: cal.currentMonth = new Date()