use only streamlit secrets

app.py

@@ -15,25 +15,19 @@ from llama_cpp import Llama
 
 # --- Configuration & Constants ---
 
-# Get API keys from environment variables or Streamlit secrets
-GEOAPIFY_KEY = os.environ.get("GEOAPIFY_KEY")
-if not GEOAPIFY_KEY:
-    try:
-        GEOAPIFY_KEY = st.secrets["GEOAPIFY_KEY"]
-    except KeyError:
-        st.error("Geoapify API key not found. Please add it to environment variables or Streamlit secrets.")
-        st.stop()
+# Get API key from Streamlit secrets
+try:
+    GEOAPIFY_KEY = st.secrets["GEOAPIFY_KEY"]
+except KeyError:
+    st.error("Geoapify API key not found. Please add it to Streamlit secrets.")
+    st.stop()
 
 # HF_TOKEN is optional but recommended for downloads
-HF_TOKEN = os.environ.get("HF_TOKEN")
-if not HF_TOKEN:
-    try:
-        HF_TOKEN = st.secrets.get("HF_TOKEN")
-    except KeyError:
-        HF_TOKEN = None
-
-if HF_TOKEN:
+try:
+    HF_TOKEN = st.secrets.get("HF_TOKEN")
     login(token=HF_TOKEN)
+except KeyError:
+    HF_TOKEN = None
 
 # Model and RAG configuration
 MODEL_REPO_ID = "bartowski/gemma-2-2b-it-GGUF"