feat: websocket

src/lib/stores/index.ts

@@ -2,6 +2,7 @@ import { APP_NAME } from '$lib/constants';
 import { type Writable, writable } from 'svelte/store';
 import type { GlobalModelConfig, ModelConfig } from '$lib/apis';
 import type { Banner } from '$lib/types';
+import type { Socket } from 'socket.io-client';
 
 // Backend
 export const WEBUI_NAME = writable(APP_NAME);
@@ -13,6 +14,8 @@ export const MODEL_DOWNLOAD_POOL = writable({});
 
 export const mobile = writable(false);
 
+export const socket: Writable<null | Socket> = writable(null);
+
 export const theme = writable('system');
 export const chatId = writable('');