- Remove _DEFAULT_KEY from real-fit-engine.py, run-focused-eval.py, test_real_api.py
- Replace USE_MOCK env var with DRY_RUN --dry-run CLI flag
- Create tests/mocks/ollama_mock.py for isolated mock testing
- Remove stale glm-5.1 from DEFAULT_MODELS and docs
- Update .env.example with OLLAMA_HOST and OLLAMA_KEY
Issues: #123