Fix streaming buffering issue

- Add asyncio.sleep(0) to force immediate token transmission
- Prevent Hugging Face Spaces buffering
- Improve real-time streaming experience

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -222,6 +222,8 @@ async def chat_stream(request: ChatRequest):
 
     async def generate_stream() -> AsyncGenerator[str, None]:
         """토큰 단위 스트리밍 제너레이터"""
+        import asyncio
+
         try:
             # 프롬프트 빌드
             prompt = build_prompt(request.message, request.mode)
@@ -251,6 +253,8 @@ async def chat_stream(request: ChatRequest):
                             "token_count": token_count
                         }
                         yield f"data: {json.dumps(data, ensure_ascii=False)}\n\n"
+                        # 즉시 전송을 위한 짧은 대기
+                        await asyncio.sleep(0)
 
             # 완료 신호
             final_data = {

main.py

@@ -205,6 +205,8 @@ async def chat_stream(request: ChatRequest):
 
     async def generate_stream() -> AsyncGenerator[str, None]:
         """토큰 단위 스트리밍 제너레이터"""
+        import asyncio
+
         try:
             # 프롬프트 빌드
             prompt = build_prompt(request.message, request.mode)
@@ -234,6 +236,8 @@ async def chat_stream(request: ChatRequest):
                             "token_count": token_count
                         }
                         yield f"data: {json.dumps(data, ensure_ascii=False)}\n\n"
+                        # 즉시 전송을 위한 짧은 대기
+                        await asyncio.sleep(0)
 
             # 완료 신호
             final_data = {