displays: add configurator for niri, Hyprland, and MangoWC

- Configure position, VRR, orientation, resolution, refresh rate
- Split Display section into Configuration, Gamma, and Widgets
- MangoWC omits VRR because it doesnt have per-display VRR
- HDR configuration not present for Hyprland

quickshell/Modals/Settings/SettingsContent.qml

@@ -125,13 +125,45 @@ FocusScope {
         }
 
         Loader {
-            id: displaysLoader
+            id: displayConfigLoader
             anchors.fill: parent
-            active: root.currentIndex === 6
+            active: root.currentIndex === 24
             visible: active
             focus: active
 
-            sourceComponent: DisplaysTab {}
+            sourceComponent: DisplayConfigTab {}
+
+            onActiveChanged: {
+                if (active && item) {
+                    Qt.callLater(() => item.forceActiveFocus());
+                }
+            }
+        }
+
+        Loader {
+            id: gammaControlLoader
+            anchors.fill: parent
+            active: root.currentIndex === 25
+            visible: active
+            focus: active
+
+            sourceComponent: GammaControlTab {}
+
+            onActiveChanged: {
+                if (active && item) {
+                    Qt.callLater(() => item.forceActiveFocus());
+                }
+            }
+        }
+
+        Loader {
+            id: displayWidgetsLoader
+            anchors.fill: parent
+            active: root.currentIndex === 26
+            visible: active
+            focus: active
+
+            sourceComponent: DisplayWidgetsTab {}
 
             onActiveChanged: {
                 if (active && item) {

quickshell/Modals/Settings/SettingsModal.qml

@@ -58,7 +58,7 @@ FloatingWindow {
     objectName: "settingsModal"
     title: I18n.tr("Settings", "settings window title")
     minimumSize: Qt.size(500, 400)
-    implicitWidth: 800
+    implicitWidth: 900
     implicitHeight: screen ? Math.min(940, screen.height - 100) : 940
     color: Theme.surfaceContainer
     visible: false

quickshell/Modals/Settings/SettingsSidebar.qml

@@ -144,6 +144,32 @@ Rectangle {
             "tabIndex": 2,
             "shortcutsOnly": true
         },
+        {
+            "id": "displays",
+            "text": I18n.tr("Displays"),
+            "icon": "monitor",
+            "collapsedByDefault": true,
+            "children": [
+                {
+                    "id": "display_config",
+                    "text": I18n.tr("Configuration") + " (Beta)",
+                    "icon": "display_settings",
+                    "tabIndex": 24
+                },
+                {
+                    "id": "display_gamma",
+                    "text": I18n.tr("Gamma Control"),
+                    "icon": "brightness_6",
+                    "tabIndex": 25
+                },
+                {
+                    "id": "display_widgets",
+                    "text": I18n.tr("Widgets", "settings_displays"),
+                    "icon": "widgets",
+                    "tabIndex": 26
+                }
+            ]
+        },
         {
             "id": "network",
             "text": I18n.tr("Network"),
@@ -157,12 +183,6 @@ Rectangle {
             "icon": "computer",
             "collapsedByDefault": true,
             "children": [
-                {
-                    "id": "displays",
-                    "text": I18n.tr("Displays"),
-                    "icon": "monitor",
-                    "tabIndex": 6
-                },
                 {
                     "id": "printers",
                     "text": I18n.tr("Printers"),