优化搜索算法，更新图标

app/components/sidebar.tsx

@@ -12,7 +12,7 @@ import DeleteIcon from "../icons/delete.svg";
 import MaskIcon from "../icons/mask.svg";
 import DragIcon from "../icons/drag.svg";
 import DiscoveryIcon from "../icons/discovery.svg";
-
+import SearchIcon from "../icons/zoom.svg";
 import Locale from "../locales";
 
 import { useAppConfig, useChatStore } from "../store";
@@ -251,7 +251,7 @@ export function SideBar(props: { className?: string }) {
             shadow
           />
           <IconButton
-            icon={<DiscoveryIcon />}
+            icon={<SearchIcon />}
             text={shouldNarrow ? undefined : Locale.SearchChat.Name}
             className={styles["sidebar-bar-button"]}
             onClick={() =>