refactor: Restructure project into sources/tests layout and dissolve PluginLLMCore

sources/providers/ProvidersManager.hpp

@@ -0,0 +1,41 @@
+// Copyright (C) 2024-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Additional attribution terms under GPLv3 §7(b) apply — see LICENSE
+
+#pragma once
+
+#include <QString>
+
+#include "providers/IProviderRegistry.hpp"
+#include <QMap>
+
+namespace QodeAssist::Providers {
+
+class ProvidersManager : public IProviderRegistry
+{
+public:
+    static ProvidersManager &instance();
+    ~ProvidersManager();
+
+    template<typename T>
+    void registerProvider()
+    {
+        static_assert(std::is_base_of<Provider, T>::value, "T must inherit from Provider");
+        T *provider = new T();
+        QString name = provider->name();
+        m_providers[name] = provider;
+    }
+
+    Provider *getProviderByName(const QString &providerName) override;
+
+    QStringList providersNames() const override;
+
+private:
+    ProvidersManager() = default;
+    ProvidersManager(const ProvidersManager &) = delete;
+    ProvidersManager &operator=(const ProvidersManager &) = delete;
+
+    QMap<QString, Provider *> m_providers;
+};
+
+} // namespace QodeAssist::Providers