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

sources/acp/AgentCatalog.hpp

@@ -0,0 +1,35 @@
+// 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 <array>
+#include <optional>
+
+#include <QList>
+#include <QString>
+
+#include "acp/AgentDefinition.hpp"
+
+namespace QodeAssist::Acp {
+
+class AgentCatalog
+{
+public:
+    void setLayer(AgentSource source, const QList<AgentDefinition> &agents);
+
+    QList<AgentDefinition> agents() const { return m_merged; }
+    QList<AgentDefinition> launchableAgents() const;
+    std::optional<AgentDefinition> agent(const QString &id) const;
+
+    int size() const { return m_merged.size(); }
+
+private:
+    void rebuild();
+
+    std::array<QList<AgentDefinition>, agentSourceCount> m_layers;
+    QList<AgentDefinition> m_merged;
+};
+
+} // namespace QodeAssist::Acp