'ms-python.pylance' not found in Open VSX Registry – VSCodium

Goal: Determine how VSCodium users can access Microsoft‑published extensions such as Pylance while remaining compliant with the Microsoft Marketplace terms of use.

Constraints: VSCodium is configured by default to use the Open VSX Registry, which does not host many Microsoft‑published extensions. Manually re‑pointing the product.json to the Microsoft Marketplace makes those extensions available but may violate the Marketplace’s terms of use, and the behavior of gallery endpoints can change between releases.

Questions: Is there a supported method to obtain Microsoft‑published extensions for VSCodium without breaching the Marketplace terms? Can the Open VSX Registry be extended to host Microsoft‑published extensions under compatible licenses? What are the implications for extension validation and telemetry if a user manually adds the Microsoft Marketplace endpoint?