feat: architecture refactor — core layer, spreadsheet engine, envelope bidding, tests

- Add src/core/ (config, errors, events, http, observability, storage, query)
- Add src/Spreadsheet/ engine with native POI backend and Excel bridge
- Add Envelope C spreadsheet flow and tender bidding envelope modules
- Consolidate components into src/components/, remove legacy Component/ and Hooks/
- Add registration state/validation, auth session guard, profile edit modules
- Add unit tests across axios, redux, bidding, registration, encryption, core
- Add CI workflow, docs (architecture, audit, DSC API spec), keystore example
- Remove tracked keystore binary; ignore scripts.zip

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/Screens/Auction/PurchaseAuction.tsx

@@ -1,14 +1,13 @@
-import React, { useEffect, useState, useCallback, memo, useRef } from 'react';
-import { View, Text, StyleSheet, FlatList, RefreshControl, ActivityIndicator } from 'react-native';
-import LiveAuctionTile from './LiveAuctionTile';
+import React, { useState, useCallback, useRef } from 'react';
+import { View, FlatList, RefreshControl, ActivityIndicator } from 'react-native';
 import { useNavigation } from '@react-navigation/native';
 import moment from 'moment';
-import { useFetchLiveAuctionPage, useFetchPurchaseAuction } from '../../Services/ApiCall/Hooks';
+import { useFetchLiveAuctionPage } from '../../Services/ApiCall/Hooks';
 import PurchaseAuctionTile from './PurchaseAuctionTile';
 import { useDispatch } from 'react-redux';
 import { setAuction } from '../../Redux/Slices/SelectedAuction';
-import { SearchInput } from '../../Component/Serach/SeacrhInput';
-import { Skelton } from '../../Component/Index';
+import { SearchInput } from '../../components/SearchInput';
+import { Skeleton } from '../../components';
 import { allBooleanProps } from './types/types';
 import FilterModal from './Modal/FilterModal';
 import NavigationString from '../../Constant/NavigationString';
@@ -20,7 +19,7 @@ const PurchaseAuction = () => {
     const Dispatch = useDispatch()
     const onEndReachedCalledDuringMomentum = useRef(true);
     const [filter, setFilter] = useState({})
-    const { data, fetchNextPage, hasNextPage, isFetchingNextPage, isLoading, isRefetching, refetch, isPending }: any = useFetchLiveAuctionPage(filter);
+    const { data, fetchNextPage, hasNextPage, isFetchingNextPage, isRefetching, refetch, isPending }: any = useFetchLiveAuctionPage(filter);
     const [allBoolean, setAllBoolean] = useState<allBooleanProps>({ isShowFilter: false })
     const format = 'DD-MM-YYYY HH:mm:ss';
 
@@ -65,11 +64,11 @@ const PurchaseAuction = () => {
     return (
         <View style={{ flex: 1 }}>
             <SearchInput onChange={(val) => { setFilter(prev => ({ ...prev, auctionNumber: val })) }} placeholder='Search....' filterPress={() => { setAllBoolean((prev: any) => ({ ...prev, isShowFilter: !prev.isShowFilter })) }} filter={false} />
-            {isPending ? <Skelton />
+            {isPending ? <Skeleton />
                 :
                 <FlatList
                     data={data.result ?? []}
-                    renderItem={({ item, index }) => (
+                    renderItem={({ item }) => (
                         <PurchaseAuctionTile
                             item={item}
                             onPressDetails={() => {