changing the api keys reading

app.py

@@ -22,10 +22,10 @@ def init_resources():
         return RESOURCE_STATE
 
     # Try to load from environment variables first (for Spaces)
-    llm_api_key = os.environ.get("SAMBANOVA_API_KEY")
-    website = os.environ.get("WEBSITE")
-    embedding_model_name = os.environ.get("EMBEDDING_MODEL", "sentence-transformers/all-MiniLM-L6-v2")
-    system_prompt = os.environ.get("SYSTEM_PROMPT", "You are a helpful assistant.")
+    llm_api_key = os.getenv("SAMBANOVA_API_KEY")
+    website = os.getenv("WEBSITE")
+    embedding_model_name = os.getenv("EMBEDDING_MODEL", "sentence-transformers/all-MiniLM-L6-v2")
+    system_prompt = os.getenv("SYSTEM_PROMPT", "You are a helpful assistant.")
 
     # Fallback to config.yaml if env vars not set
     if not llm_api_key or not website: