v0.5.5

• Add db_names parameter to setup_credentials for non-interactive use
• Make setup_credentials interactive per database; fix empty credential check
• Add Python 3.14 support (CI matrix and classifiers)
• Replace mypy with ty for type checking
• Update dependencies: tabulate, pytest v9, pylint v4, pytest-cov v7, types-requests
• Update GitHub Actions: actions/checkout v6, setup-uv v7, upload-artifact v7, codecov-action v5
• Raise TimeoutError on background job timeout instead of silently exiting (behavior change)
• Add types-requests stubs for type checking
• Update all tests and re-record cassettes
• Make setup_credentials transactional: roll back all in-memory config changes on any error; validate db_names against supported list before use