allow services for anonymous users & gpt4 fix

app/src/core/backend.ts

@@ -24,6 +24,7 @@ export interface User {
 
 export class Backend extends EventEmitter {
     public user: User | null = null;
+    public services: string[] = [];
     private checkedSession = false;
 
     private sessionInterval = new AsyncLoop(() => this.getSession(), 1000 * 30);
@@ -70,8 +71,10 @@ export class Backend extends EventEmitter {
                 avatar: session.picture,
                 services: session.services,
             };
+            this.services = session.services || [];
         } else {
             this.user = null;
+            this.services = session?.services || [];
         }
 
         this.checkedSession = true;

app/src/core/chat/openai.ts

@@ -7,7 +7,7 @@ import { backend } from "../backend";
 export const defaultModel = 'gpt-3.5-turbo';
 
 export function isProxySupported() {
-    return !!backend.current?.user?.services?.includes('openai');
+    return !!backend.current?.services?.includes('openai');
 }
 
 function shouldUseProxy(apiKey: string | undefined | null) {
@@ -141,5 +141,5 @@ export async function createStreamingChatCompletion(messages: OpenAIMessage[], p
 
 export const maxTokensByModel = {
     "chatgpt-3.5-turbo": 2048,
-    "gpt-4": 8096,
+    "gpt-4": 8192,
 }

app/src/tts-plugins/elevenlabs.tsx

@@ -6,7 +6,7 @@ import { defaultElevenLabsVoiceID, defaultVoiceList } from "./elevenlabs-default
 import { backend } from "../core/backend";
 
 function isProxySupported() {
-    return !!backend.current?.user?.services?.includes('elevenlabs');
+    return !!backend.current?.services?.includes('elevenlabs');
 }
 
 function shouldUseProxy(apiKey: string | undefined | null) {