feat: Improve list in agent settngs list

settings/CollapsibleHeader.hpp

@@ -0,0 +1,45 @@
+// Copyright (C) 2024-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+#pragma once
+
+#include <QFrame>
+
+class QLabel;
+
+namespace QodeAssist::Settings {
+
+class CollapsibleHeader : public QFrame
+{
+    Q_OBJECT
+public:
+    explicit CollapsibleHeader(const QString &title, int count, QWidget *parent = nullptr);
+
+    void setExpanded(bool expanded);
+    bool isExpanded() const { return m_expanded; }
+    void setClickable(bool clickable);
+
+signals:
+    void toggled();
+
+protected:
+    void mouseReleaseEvent(QMouseEvent *event) override;
+    void enterEvent(QEnterEvent *event) override;
+    void leaveEvent(QEvent *event) override;
+    void changeEvent(QEvent *event) override;
+
+private:
+    void applyTheme();
+    void updateArrow();
+
+    bool m_expanded = false;
+    bool m_clickable = true;
+    bool m_hovered = false;
+    bool m_inApplyTheme = false;
+    QLabel *m_arrow = nullptr;
+    QLabel *m_title = nullptr;
+    QLabel *m_count = nullptr;
+};
+
+} // namespace QodeAssist::Settings