feat: Add mcp client hub

mcp/McpClientsManager.hpp

@@ -0,0 +1,63 @@
+// Copyright (C) 2024-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <QJsonObject>
+#include <QList>
+#include <QObject>
+#include <QPointer>
+#include <QString>
+
+#include "McpServerConnection.hpp"
+
+class QFileSystemWatcher;
+class QTimer;
+
+namespace QodeAssist::Mcp {
+
+class McpClientsManager : public QObject
+{
+    Q_OBJECT
+public:
+    static McpClientsManager &instance();
+
+    static QString configFilePath();
+    static QByteArray emptyConfigTemplate();
+
+    void init();
+
+    QList<McpServerConnection *> connections() const;
+
+    bool setServerEnabled(const QString &name, bool enabled);
+    bool addServer(const QString &name, const QJsonObject &entry);
+    bool removeServer(const QString &name);
+    void reload();
+
+signals:
+    void serversChanged();
+    void writeFailed(const QString &reason);
+
+private:
+    explicit McpClientsManager(QObject *parent = nullptr);
+    ~McpClientsManager() override;
+    McpClientsManager(const McpClientsManager &) = delete;
+    McpClientsManager &operator=(const McpClientsManager &) = delete;
+
+    void loadFromDisk();
+    void ensureFileExists();
+    void setupWatcher();
+    void updateWatchedPaths();
+
+    QList<PluginLLMCore::Provider *> toolsCapableProviders() const;
+    QJsonObject readRoot() const;
+    bool writeRoot(const QJsonObject &root);
+
+    bool m_initialized = false;
+    bool m_suppressNextWatcherReload = false;
+    QList<McpServerConnection *> m_connections;
+    QPointer<QFileSystemWatcher> m_watcher;
+    QPointer<QTimer> m_reloadDebounce;
+};
+
+} // namespace QodeAssist::Mcp