Update app.py

app.py

@@ -287,7 +287,7 @@ def chat(system_prompt, user_text, audio_file, history, max_tokens, temperature,
 
     try:
         # 禁用代理以访问内网 API
-        with httpx.Client(base_url=API_BASE_URL, timeout=120, proxies={}) as client:
+        with httpx.Client(base_url=API_BASE_URL, timeout=120) as client:
             response = client.post("/chat/completions", json={
                 "model": model_name,
                 "messages": messages,