Found during freeze-branch integration testing (PR #12 + #14 + #15
combined): app/config.py's write-back (os.environ["CF_ORCH_URL"] =
GPU_SERVER_URL) is a module-level side effect monkeypatch never tracks,
so it wasn't being reverted between tests. Once any test_config.py test
set a truthy GPU_SERVER_URL/CF_LICENSE_KEY, the resulting CF_ORCH_URL
wrote leaked into every later test in the same pytest session.
This silently broke all five "skips_embeddings_without_ollama_url"
tests across the shelve_*.py suite (pdf, docx, odt, ods, xlsx) — their
get_llm_config() check no longer saw a clean "nothing configured" state,
so they attempted embedding instead of skipping it. Neither PR #12 nor
#14 alone exercised this combination in the same test session, so it
only surfaced once merged together.
Fix: explicitly pop CF_ORCH_URL/GPU_SERVER_URL/CF_LICENSE_KEY from
os.environ in the autouse teardown fixture before reloading app.config,
rather than relying on monkeypatch to catch a write it never made itself.