add file+dir watcher & gatekeep reloads

Plugins/ZShell/Config/config.hpp

@@ -1,11 +1,14 @@
 #pragma once
 
 #include "configobject.hpp"
-#include <qqmlregistration.h>
-#include <QTimer>
-#include <QtConcurrent/QtConcurrent>
+
+#include <QByteArray>
+#include <QFileSystemWatcher>
 #include <QFuture>
-#include <qtmetamacros.h>
+#include <QMutex>
+#include <QTimer>
+#include <qqmlregistration.h>
+#include <QtConcurrent/QtConcurrent>
 
 class QQmlEngine;
 class QJSEngine;
@@ -79,14 +82,23 @@ class Config : public ConfigObject {
 	private Q_SLOTS:
 	void scheduleSave();
 	void flushAsync();
+	void onWatcherEvent(const QString& path);
 
 	private:
 	QString filePath() const;
-	void writeAtomically(const QByteArray& data);
+	bool writeAtomically(const QByteArray& data);
+	void updateWatch();
 	void loadSync();
 	void loadAsync();
 
 	QTimer m_saveTimer;
+	QTimer m_reloadTimer;
+	QFileSystemWatcher m_watcher;
+
+	QMutex m_writeMutex;
+	QByteArray m_lastWriteHash;
+
+	bool m_reloadPending = false;
 	bool m_loading = false;
 	bool m_firstLoadDone = false;
 	QFuture<void> m_loadFuture;