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

sources/acp/AgentCatalog.cpp

@@ -0,0 +1,65 @@
+// Copyright (C) 2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+#include "AgentCatalog.hpp"
+
+#include <algorithm>
+
+#include <QHash>
+
+namespace QodeAssist::Acp {
+
+namespace {
+
+constexpr std::array<AgentSource, agentSourceCount> mergeOrderLowestPriorityFirst{
+    AgentSource::BundledSnapshot, AgentSource::LiveRegistry, AgentSource::UserFile};
+
+} // namespace
+
+void AgentCatalog::setLayer(AgentSource source, const QList<AgentDefinition> &agents)
+{
+    m_layers[static_cast<int>(source)] = agents;
+    rebuild();
+}
+
+QList<AgentDefinition> AgentCatalog::launchableAgents() const
+{
+    QList<AgentDefinition> result;
+    for (const AgentDefinition &agent : m_merged) {
+        if (agent.isLaunchable())
+            result.append(agent);
+    }
+    return result;
+}
+
+std::optional<AgentDefinition> AgentCatalog::agent(const QString &id) const
+{
+    for (const AgentDefinition &agent : m_merged) {
+        if (agent.id == id)
+            return agent;
+    }
+    return std::nullopt;
+}
+
+void AgentCatalog::rebuild()
+{
+    QHash<QString, AgentDefinition> byId;
+    for (AgentSource source : mergeOrderLowestPriorityFirst) {
+        for (const AgentDefinition &agent : std::as_const(m_layers[static_cast<int>(source)]))
+            byId.insert(agent.id, agent);
+    }
+
+    m_merged = byId.values();
+    std::sort(
+        m_merged.begin(),
+        m_merged.end(),
+        [](const AgentDefinition &left, const AgentDefinition &right) {
+            const int byName = QString::compare(left.name, right.name, Qt::CaseInsensitive);
+            if (byName != 0)
+                return byName < 0;
+            return left.id < right.id;
+        });
+}
+
+} // namespace QodeAssist::Acp