[Update] new logic

lib/utils/env_checker.py

@@ -0,0 +1,16 @@
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+def check_env_variables():
+    """환경변수 체크 함수"""
+    required_vars = [
+        "BACKEND_URL",
+        "GOOGLE_API_KEY",
+        "GOOGLE_MODEL",
+        "GOOGLE_PLANNER_MODEL"
+    ]
+    
+    for var in required_vars:
+        if os.getenv(var) is None:
+            raise ValueError(f"{var} 환경변수가 설정되지 않았습니다.")