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diff --git a/archived/projt-launcher/launcher/RecursiveFileSystemWatcher.h b/archived/projt-launcher/launcher/RecursiveFileSystemWatcher.h
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+++ b/archived/projt-launcher/launcher/RecursiveFileSystemWatcher.h
@@ -0,0 +1,81 @@
+// 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 <QDir>
+#include <QFileSystemWatcher>
+#include "Filter.h"
+
+class RecursiveFileSystemWatcher : public QObject
+{
+	Q_OBJECT
+  public:
+	RecursiveFileSystemWatcher(QObject* parent);
+
+	void setRootDir(const QDir& root);
+	QDir rootDir() const
+	{
+		return m_root;
+	}
+
+	// WARNING: setting this to true may be bad for performance
+	void setWatchFiles(bool watchFiles);
+	bool watchFiles() const
+	{
+		return m_watchFiles;
+	}
+
+	void setMatcher(Filter matcher)
+	{
+		m_matcher = std::move(matcher);
+	}
+
+	QStringList files() const
+	{
+		return m_files;
+	}
+
+  signals:
+	void filesChanged();
+	void fileChanged(const QString& path);
+
+  public slots:
+	void enable();
+	void disable();
+
+  private:
+	QDir m_root;
+	bool m_watchFiles = false;
+	bool m_isEnabled  = false;
+	Filter m_matcher;
+
+	QFileSystemWatcher* m_watcher;
+
+	QStringList m_files;
+	void setFiles(const QStringList& files);
+
+	void addFilesToWatcherRecursive(const QDir& dir);
+	QStringList scanRecursive(const QDir& dir);
+
+  private slots:
+	void fileChange(const QString& path);
+	void directoryChange(const QString& path);
+};