유효하지 않은 KEY 가 설정되어 있어도, 일단 UI 페이지가 나오도록 수정.

app/services/market_data.py

@@ -22,9 +22,17 @@ class MarketDataService:
         self._client = httpx.AsyncClient(timeout=10.0)
         self._rate_limiter = RateLimiter(settings.rate_limit.requests_per_second)
 
+    def _check_auth(self) -> bool:
+        if not token_manager.is_authenticated:
+            logger.debug("API 인증되지 않음 - 시세 조회 불가")
+            return False
+        return True
+
     async def get_current_price(self, stock_code: str) -> dict:
+        if not self._check_auth():
+            return {}
+
         await self._rate_limiter.acquire()
-        token = await token_manager.get_access_token()
         headers = token_manager.get_auth_headers("FHKST01010100")
         params = {_FID_COND_MRKT_DIV_CODE: "J", _FID_INPUT_ISCD: stock_code}
         url = f"{get_base_url()}{_PRICE_URL}"
@@ -54,8 +62,10 @@ class MarketDataService:
     async def get_daily_chart(
         self, stock_code: str, start_date: str, end_date: str, count: int = 30
     ) -> list[dict]:
+        if not self._check_auth():
+            return []
+
         await self._rate_limiter.acquire()
-        token = await token_manager.get_access_token()
         headers = token_manager.get_auth_headers("FHKST03010200")
         params = {
             _FID_COND_MRKT_DIV_CODE: "J",
@@ -88,8 +98,10 @@ class MarketDataService:
         return result
 
     async def get_orderbook(self, stock_code: str) -> dict:
+        if not self._check_auth():
+            return {}
+
         await self._rate_limiter.acquire()
-        token = await token_manager.get_access_token()
         headers = token_manager.get_auth_headers("FHKST01010200")
         params = {_FID_COND_MRKT_DIV_CODE: "J", _FID_INPUT_ISCD: stock_code}
         url = f"{get_base_url()}{_ORDERBOOK_URL}"