refactor: replace hardcoded text with language package entries

Replace all inline hardcoded Chinese strings in multiple Vue pages with corresponding language package keys, to unify text management and support multi-language switching.

pages_tool/goods/not_exist.vue

@@ -2,7 +2,7 @@
 	<view class="page" :style="themeColor">
 		<view class="closeBox">
 			<image :src="$util.img('public/uniapp/goods/not_exist.png')" mode="widthFix" show-menu-by-longpress></image>
-			<text class="close-title">您查看的商品不存在，可能已下架或被删除</text>
+			<text class="close-title">{{ $lang('goods.goodsNotExist') }}</text>
 		</view>
 	</view>
 </template>