feat: Add agents and agents settings

settings/AgentListPane.hpp

@@ -0,0 +1,62 @@
+// Copyright (C) 2024-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QFrame>
+#include <QList>
+#include <QSet>
+#include <QString>
+#include <vector>
+
+#include <AgentConfig.hpp>
+
+class QLineEdit;
+class QScrollArea;
+class QTimer;
+class QVBoxLayout;
+
+namespace QodeAssist {
+class AgentFactory;
+}
+
+namespace QodeAssist::Settings {
+
+class AgentListItem;
+class TagFilterStrip;
+
+class AgentListPane : public QFrame
+{
+    Q_OBJECT
+public:
+    explicit AgentListPane(AgentFactory *factory, QWidget *parent = nullptr);
+
+    QString currentName() const { return m_currentName; }
+    void selectByName(const QString &name);
+    void refresh();
+
+signals:
+    void currentAgentChanged(const QString &name);
+
+protected:
+    void changeEvent(QEvent *event) override;
+
+private:
+    void rebuildList();
+    void applyFilterHolderTheme();
+    bool matchesFilters(const AgentConfig &a, const QString &lowerFilter) const;
+    std::vector<const AgentConfig *> visibleAgents() const;
+    void setCurrentNameInternal(const QString &name, bool emitSignal);
+    void onRowClicked(const QString &name);
+
+    AgentFactory *m_factory;
+    QLineEdit *m_filterEdit = nullptr;
+    QTimer *m_filterDebounce = nullptr;
+    QWidget *m_filterHolder = nullptr;
+    TagFilterStrip *m_tagStrip = nullptr;
+    QScrollArea *m_listScroll = nullptr;
+    QList<AgentListItem *> m_rows;
+    QString m_currentName;
+};
+
+} // namespace QodeAssist::Settings