Blame for tests/conftest.py

# Runs before any test module is imported (pytest loads conftest.py first).
#
# routes/bff.py imports utils/groq_client.py at module level, which raises
# RuntimeError at import time if no GROQ_API_KEY* env var is set (see its own
# docstring). Tests here only exercise pure functions (_stage_guidance,
# BUSINESS_STAGES) that never make a real Groq call, so a fake key is enough
# to get past import — never make a real network call using this value.
import os

os.environ.setdefault("GROQ_API_KEY", "test-key-not-a-real-credential")