documentation and cleanup

app.py

@@ -3,15 +3,11 @@ import os
 from huggingface_hub import InferenceClient
 import cohere
 
-# Models
+# Models, API keys and initialization of API clients
 COHERE_MODEL = "command-r-plus"
 HF_MODEL = "meta-llama/Llama-3.2-3B-Instruct"
-
-# Fetch API keys from environment variables
 HF_API_KEY = os.getenv("HF_API_KEY")
 COHERE_API_KEY = os.getenv("COHERE_API_KEY")
-
-# Initialize clients for Hugging Face and Cohere APIs
 client_hf = InferenceClient(model=HF_MODEL, token=HF_API_KEY)
 client_cohere = cohere.Client(COHERE_API_KEY)