progress: add missing copyright headers

src/controllers/highlights/ConfigureDialog.cpp

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #include "controllers/highlights/ConfigureDialog.hpp"
 
 #include "Application.hpp"

src/controllers/highlights/ConfigureDialog.hpp

@@ -1,15 +1,14 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include "controllers/highlights/types/All.hpp"
-#include "util/DisplayBadge.hpp"
 #include "widgets/BasePopup.hpp"
 
-#include <qtmetamacros.h>
 #include <QWidget>
 
-#include <memory>
-#include <optional>
-
 namespace chatterino::highlights {
 
 class ConfigureDialog : public BasePopup

src/controllers/highlights/Model.cpp

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #include "controllers/highlights/Model.hpp"
 
 #include "Application.hpp"

src/controllers/highlights/Model.hpp

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include "common/SignalVectorModel.hpp"

src/widgets/settingspages/HighlightingWidget.cpp

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #include "widgets/settingspages/HighlightingWidget.hpp"
 
 #include "common/QLogging.hpp"

src/widgets/settingspages/HighlightingWidget.hpp

@@ -1,3 +1,7 @@
+// SPDX-FileCopyrightText: 2026 Contributors to Chatterino <https://chatterino.com>
+//
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include "widgets/BaseWidget.hpp"