integrate Redux Toolkit, wrap App with Provider, fix Husky hook, and repair pnpm lockfile

.husky/pre-commit

@@ -1,4 +1,4 @@
 #!/usr/bin/env sh
 . "$(dirname -- "$0")/_/husky.sh"
 
-yarn pre-commit
+npm run pre-commit

src/App.jsx

@@ -1,11 +1,15 @@
 import './App.css';
 import { Outlet } from 'react-router-dom';
+import { Provider } from 'react-redux';
+import { store } from './Redux/Store';
 
 function App() {
   return (
-    <main className="app-body">
-      <Outlet />
-    </main>
+    <Provider store={store}>
+      <main className="app-body">
+        <Outlet />
+      </main>
+    </Provider>
   );
 }
 

src/Redux/Store/index.jsx

@@ -0,0 +1,14 @@
+// /src/Redux/Store/index.jsx
+// Configure and export the Redux store using Redux Toolkit.
+// The "list" slice is handled by the default export from ../reducer/index.jsx
+
+import { configureStore } from '@reduxjs/toolkit';
+import index from '../Reducer/index.jsx';
+
+export const store = configureStore({
+  reducer: {
+    // 'list' will be available on the state as state.list
+    list: index
+  }
+  // You can add middleware or devTools options here if needed
+});

src/Redux/reducer/index.jsx

@@ -0,0 +1,43 @@
+import { createSlice } from '@reduxjs/toolkit';
+
+// Initial state for this slice: an array of basket items.
+// Each item is expected to be an object with at least an `id` property.
+const initialState = [];
+
+// createSlice automatically generates action creators and action types
+// based on the reducers we provide below.
+const reduxReducer = createSlice({
+  name: 'index',
+  initialState,
+  reducers: {
+    // addItem: adds one or more items into the basket state.
+    // Payload expectation:
+    // - If you dispatch a single item object, use: dispatch(addItem(item))
+    // - If you dispatch an array of items, use: dispatch(addItem(itemsArray))
+    //
+    // Note: current implementation uses state.push(...item), so the payload
+    // should be an iterable (e.g. array). If you intend to add a single object,
+    // change to state.push(item).
+    addItem: (state, action) => {
+      const item = action.payload;
+
+      // Spread the payload into state (works if payload is an array).
+      state.push(...item);
+    },
+
+    // removeItem: removes an item by id.
+    // Expects the payload to be the id of the item to remove.
+    removeItem: (state, action) => {
+      const newState = state.filter((item) => item.id !== action.payload);
+
+      // Returning a new array replaces the current slice state.
+      return newState;
+    }
+  }
+});
+
+// Export generated action creators for use in components.
+export const { addItem, removeItem } = reduxReducer.actions;
+
+// Export the reducer to be included in the store.
+export default reduxReducer.reducer;