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diff --git a/archived/projt-launcher/launcher/meta/Index.hpp b/archived/projt-launcher/launcher/meta/Index.hpp
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+// SPDX-License-Identifier: GPL-3.0-only
+// SPDX-FileCopyrightText: 2026 Project Tick
+// SPDX-FileContributor: Project Tick Team
+/*
+ *  ProjT Launcher - Minecraft Launcher
+ *  Copyright (C) 2026 Project Tick
+ *
+ *  This program is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, version 3.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program.  If not, write to the Free Software Foundation,
+ *  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#pragma once
+
+#include <QAbstractListModel>
+#include <QHash>
+
+#include "BaseEntity.hpp"
+#include "VersionList.hpp"
+#include "net/Mode.h"
+
+class Task;
+
+namespace projt::meta
+{
+
+	/**
+	 * @brief Root index of all available metadata components.
+	 */
+	class MetaIndex : public QAbstractListModel, public MetaEntity
+	{
+		Q_OBJECT
+
+	  public:
+		explicit MetaIndex(QObject* parent = nullptr);
+		explicit MetaIndex(const QList<MetaVersionList::Ptr>& components, QObject* parent = nullptr);
+		~MetaIndex() override = default;
+
+		enum
+		{
+			ComponentUidRole = Qt::UserRole,
+			ComponentNameRole,
+			ComponentListRole
+		};
+
+		// QAbstractListModel interface
+		QVariant data(const QModelIndex& index, int role) const override;
+		int rowCount(const QModelIndex& parent = {}) const override;
+		int columnCount(const QModelIndex& parent = {}) const override;
+		QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
+
+		// MetaEntity interface
+		QString cacheFilePath() const override
+		{
+			return QStringLiteral("index.json");
+		}
+		void loadFromJson(const QJsonObject& json) override;
+
+		// Component access
+		bool hasComponent(const QString& uid) const;
+		MetaVersionList::Ptr component(const QString& uid);
+		MetaVersion::Ptr version(const QString& componentUid, const QString& versionId);
+		QList<MetaVersionList::Ptr> allComponents() const
+		{
+			return m_components;
+		}
+
+		// Load operations
+		Task::Ptr loadVersionTask(const QString& componentUid,
+								  const QString& versionId = {},
+								  Net::Mode mode		   = Net::Mode::Online,
+								  bool forceRefresh		   = false);
+
+		// Blocking load
+		MetaVersion::Ptr loadVersionBlocking(const QString& componentUid, const QString& versionId);
+
+	  public: // For parsers
+		void mergeWith(const std::shared_ptr<MetaIndex>& other);
+
+	  private:
+		void bindComponentSignals(int row, const MetaVersionList::Ptr& component);
+
+		QList<MetaVersionList::Ptr> m_components;
+		QHash<QString, MetaVersionList::Ptr> m_componentIndex;
+	};
+
+} // namespace projt::meta