Update app.py

app.py

@@ -261,6 +261,13 @@ def call_ollama_stream(messages, *, model: str = OLLAMA_MODEL,
     if read_timeout_sec is None:
         read_timeout_sec = int(os.getenv("OLLAMA_TIMEOUT", "300"))  # ✅ 5분
 
+    url = f"{OLLAMA_HOST}/api/chat"
+
+    _msgs = []
+    if system_prompt:
+        _msgs.append({"role": "system", "content": system_prompt})
+    _msgs.extend(messages)
+    
     payload = {
         "model": model,
         "messages": _msgs,          # <- 기존 그대로