Create a feature flag page in devtools.

src/CMakeLists.txt

@@ -325,6 +325,7 @@ qt_add_qml_module(neochat URI org.kde.neochat NO_PLUGIN
         qml/RoomTreeSection.qml
         qml/DelegateContextMenu.qml
         qml/ShareDialog.qml
+        qml/FeatureFlagPage.qml
     RESOURCES
         qml/confetti.png
         qml/glowdot.png

src/qml/DevtoolsPage.qml

@@ -29,6 +29,9 @@ FormCard.FormCardPage {
         QQC2.TabButton {
             text: qsTr("Server Info")
         }
+        QQC2.TabButton {
+            text: i18nc("@title:tab", "Feature Flags")
+        }
     }
 
     StackLayout {
@@ -43,5 +46,6 @@ FormCard.FormCardPage {
         ServerData {
             connection: root.connection
         }
+        FeatureFlagPage {}
     }
 }

src/qml/FeatureFlagPage.qml

@@ -0,0 +1,27 @@
+// SPDX-FileCopyrightText: 2024 James Graham <james.h.graham@protonmail.com>
+// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
+
+import QtQuick
+import QtQuick.Layouts
+
+import org.kde.kirigami as Kirigami
+import org.kde.kirigamiaddons.formcard as FormCard
+
+import org.kde.neochat
+import org.kde.neochat.config
+
+FormCard.FormCardPage {
+    id: root
+
+    FormCard.FormCard {
+        Layout.topMargin: Kirigami.Units.largeSpacing
+
+        FormCard.FormCheckDelegate {
+            id: roomAccountDataVisibleCheck
+            text: i18nc("@option:check Enable the matrix 'threads' feature", "Threads")
+            checked: Config.threads
+
+            onToggled: Config.threads = checked
+        }
+    }
+}