Warn when reverting to original state (no actual changes)

src/App.tsx

@@ -473,6 +473,7 @@ export default function App() {
               {activeModule === 'history' && (
                 <HistoryView 
                   headers={appState.headers}
+                  data={appState.data}
                   onRevert={(articleNo, revertedData) => {
                     // Find the row in appState.data and update it
                     const rowIndex = appState.data.findIndex(r => String(r[COLUMNS.ARTICLE_NO]) === articleNo);