- Normalize Facturapi key/org_id resolution (supports both cfdi_ prefixed
tenant_config keys and short names used by invoicing_bp).
- Add CSD upload end-to-end (backend + frontend).
- Add helper scripts: setup_facturapi_orgs.py and check_facturapi_tenants.py.
- Add 20 unit tests with mocks (pos/tests/test_facturapi_service.py).
- Add CI workflow for lint + console tests on Python 3.11/3.13.
- Add pyproject.toml and requirements-dev.txt with ruff/pytest config.
- Update FASES_IMPLEMENTADAS.md with FASE 8 documentation.
Tests: 81 passing (61 console + 20 Facturapi).
- get_org_status now returns has_key, has_org_id, pending_steps, error
- add find_organization_by_rfc and create_organization helpers
- add /facturapi/setup endpoint to link/create Facturapi org
- frontend shows detailed PAC status and setup button
- support using tenant sk_user_* key when FACTURAPI_USER_KEY env is absent