The dedup refactor dropped the explicit load_dotenv() that the old
top-level utils.py ran on import. Since then, .env was only loaded as a
side effect of importing litellm — which would silently break both
local mode (needs OPENAI_API_KEY in the environment) and cloud usage
(callers read PAGEINDEX_API_KEY via os.environ) if litellm changed that
behavior or its import were made lazy. Restore an explicit load_dotenv()
at the top of pageindex/__init__.py so PageIndex owns .env loading.
Claude-Session: https://claude.ai/code/session_01Kx5DgKbhK1N8autqXH8SmS
b64d717132