Fix to pick up LLM api keys using python-dotenv

.gitignore

@@ -6,3 +6,4 @@ src/
 eval_results/
 eval_data/
 *.egg-info/
+.env

cli/main.py

@@ -1,3 +1,10 @@
+import os
+# Load environment variables from .env if present
+try:
+    from dotenv import load_dotenv
+    load_dotenv()
+except ImportError:
+    pass
 from typing import Optional
 import datetime
 import typer

requirements.txt

@@ -24,3 +24,4 @@ rich
 questionary
 langchain_anthropic
 langchain-google-genai
+python-dotenv