fix: handle list response from Naver API in scraper

stock-lab/app/scraper.py

@@ -89,7 +89,10 @@ def fetch_overseas_news() -> List[Dict[str, str]]:
         resp.raise_for_status()
         
         data = resp.json()
-        items = data.get("result", [])
+        if isinstance(data, list):
+            items = data
+        else:
+            items = data.get("result", [])
         
         articles = []
         for item in items: