refactor(utils): saveLineData entfernt und durch Redux-Thunk ersetzt

- updatePolylineCoordinatesThunk in markerUtils.js und poiUtils.js eingebunden
- zentrale Hilfsfunktion savePolylineRedux erstellt
- fetch() entfernt, Version auf 1.1.183 erhöht

redux/slices/database/locationDevice/locationDevicesSlice.js

@@ -0,0 +1,41 @@
+// /redux/slices/database/locationDevice/locationDevicesSlice.js
+
+import { createSlice } from "@reduxjs/toolkit";
+import { fetchLocationDevicesThunk } from "../../../thunks/database/locationDevice/fetchLocationDevicesThunk";
+
+const locationDevicesSlice = createSlice({
+  name: "locationDevices",
+  initialState: {
+    data: [],
+    status: "idle",
+    error: null,
+  },
+  reducers: {
+    clearLocationDevices: (state) => {
+      state.data = [];
+      state.status = "idle";
+      state.error = null;
+    },
+  },
+  extraReducers: (builder) => {
+    builder
+      .addCase(fetchLocationDevicesThunk.pending, (state) => {
+        state.status = "loading";
+      })
+      .addCase(fetchLocationDevicesThunk.fulfilled, (state, action) => {
+        state.status = "succeeded";
+        state.data = action.payload;
+      })
+      .addCase(fetchLocationDevicesThunk.rejected, (state, action) => {
+        state.status = "failed";
+        state.error = action.error.message;
+      });
+  },
+});
+
+export const { clearLocationDevices } = locationDevicesSlice.actions;
+
+export const selectLocationDevices = (state) => state.locationDevices.data;
+export const selectLocationDeviceStatus = (state) => state.locationDevices.status;
+
+export default locationDevicesSlice.reducer;