feat: add support acp in common chat (#369)

sources/settings/AgentsWidget.hpp

@@ -0,0 +1,74 @@
+// Copyright (C) 2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+#pragma once
+
+#include <optional>
+
+#include <coreplugin/dialogs/ioptionspage.h>
+#include <utils/aspects.h>
+
+#include "acp/AgentDefinition.hpp"
+
+QT_BEGIN_NAMESPACE
+class QLabel;
+class QLineEdit;
+class QListWidget;
+class QPushButton;
+class QTextBrowser;
+class QVBoxLayout;
+QT_END_NAMESPACE
+
+namespace QodeAssist::Acp {
+class AgentCatalogStore;
+class AgentTester;
+} // namespace QodeAssist::Acp
+
+namespace QodeAssist::Settings {
+
+class AgentsWidget : public Core::IOptionsPageWidget
+{
+    Q_OBJECT
+
+public:
+    explicit AgentsWidget(Acp::AgentCatalogStore *store);
+
+    void apply() override;
+
+private:
+    void setupUI();
+    void populateList();
+    void updateButtons();
+    void showSelectedAgent();
+    void showStatus(const QString &message);
+
+    void onTest();
+    void onRefresh();
+    void onOpenAgentsFolder();
+
+    std::optional<Acp::AgentDefinition> selectedAgent() const;
+    static QString testWorkingDirectory();
+
+    Acp::AgentCatalogStore *m_store = nullptr;
+    Acp::AgentTester *m_tester = nullptr;
+
+    QLineEdit *addSettingRow(QVBoxLayout *layout, Utils::StringAspect &aspect);
+
+    QLineEdit *m_extraPathsEdit = nullptr;
+    QLineEdit *m_forwardedVariablesEdit = nullptr;
+    QListWidget *m_agentsList = nullptr;
+    QTextBrowser *m_details = nullptr;
+    QLabel *m_status = nullptr;
+    QPushButton *m_testButton = nullptr;
+    QPushButton *m_reloadButton = nullptr;
+    QPushButton *m_refreshButton = nullptr;
+};
+
+class AgentsSettingsPage : public Core::IOptionsPage
+{
+public:
+    explicit AgentsSettingsPage(Acp::AgentCatalogStore *store);
+};
+
+} // namespace QodeAssist::Settings