Update app.py

app.py

@@ -87,7 +87,7 @@ INDEX_NAME = "video-embeddings"
 EMBEDDING_MODEL = "jhgan/ko-sroberta-multitask"
 
 # OpenAI 설정
-OPENAI_API_KEY = "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"
+OPENAI_API_KEY = os.getenv("OPENAI_API_KEY")
 
 # --- 리소스 로딩 (캐싱 활용) ---
 @st.cache_resource
@@ -353,4 +353,4 @@ if st.button("Khan 멘토에게 질문하기"):
     # API 키 등 다른 요소 부재 시 에러는 각 init 함수에서 처리됨
 
 st.markdown("---")
-st.caption("Powered by Pinecone, Sentence Transformers, and OpenAI") 
+st.caption("Powered by Pinecone, Sentence Transformers, and OpenAI")