feat: Recoil-State 'selectedAreaState' durch Redux ersetzt

- Redux-Slice 'selectedAreaSlice' erstellt mit set/clear Funktionen
- DataSheet.js verwendet dispatch(setSelectedArea(...)) für Dropdown-Auswahl
- MapComponent.js liest Bereichsauswahl über useSelector aus Redux Store
- Recoil-Importe entfernt, Zustand zentralisiert

components/DataSheet.js

@@ -4,7 +4,7 @@ import { useRecoilState, useRecoilValue, useSetRecoilState } from "recoil";
 import { gisStationsStaticDistrictState } from "../redux/slices/webService/gisStationsStaticDistrictSlice";
 import { gisSystemStaticState } from "../redux/slices/webService/gisSystemStaticSlice.js";
 import { mapLayersState } from "../redux/slices/mapLayersSlice";
-import { selectedAreaState } from "../redux/slices/selectedAreaSlice";
+import { setSelectedArea } from "../redux/slices/selectedAreaSlice";
 import { zoomTriggerState } from "../redux/slices/zoomTriggerSlice.js";
 import EditModeToggle from "./EditModeToggle";
 import { polylineLayerVisibleState } from "../redux/slices/polylineLayerVisibleSlice"; // Import für Polyline-Visibility
@@ -21,10 +21,9 @@ import { setVisible } from "../redux/slices/poiLayerVisibleSlice";
 
 function DataSheet() {
   const [editMode, setEditMode] = useState(false); // Zustand für editMode
-  const dispatch = useDispatch();
   const poiVisible = useSelector((state) => state.poiLayerVisible.visible);
   const setPoiVisible = (value) => dispatch(setVisible(value));
-  const setSelectedArea = useSetRecoilState(selectedAreaState);
+  const dispatch = useDispatch();
   const mapLayersVisibility = useSelector(selectMapLayersState);
   const [stationListing, setStationListing] = useState([]);
   const [systemListing, setSystemListing] = useState([]);
@@ -77,7 +76,7 @@ function DataSheet() {
   const handleAreaChange = (event) => {
     const selectedIndex = event.target.options.selectedIndex;
     const areaName = event.target.options[selectedIndex].text;
-    setSelectedArea(areaName);
+    dispatch(setSelectedArea(areaName));
   };
 
   useEffect(() => {