[wenbinf]

Published Python SDK 3.1.0 does not require a patched Certifi bundle. Prepare 3.1.1 with certifi>=2026.10.19 so installing the release upgrades older bundles or reports conflicting dependency constraints.

Raise the Certifi minimum in the package requirements and lockfile metadata, and bump the SDK and generated contract to 3.1.1. The lockfile already resolves Certifi 2026.10.19.

This prepares the patch release; package publication is a separate step.

Validation:

• Python 3.10 and 3.14: 84 offline tests passed and 13 opt-in integration tests skipped on each version.
• Black and Flake8 passed.
• Built the wheel and source distribution and validated distribution metadata with a publication dry run.
• An isolated wheel installation exposes all 31 API methods, requires the patched Certifi minimum, and passes the certificate-bundle audit.
• Confirmed neither release archive includes a changelog.