A safer way to move a build forward.

Prove the package before committing to it

The v109 promotion work addressed a Windows deployment-handle problem. A two-stage version pointer allowed the candidate to be smoke-tested before the current generation was committed.

The resulting installed package passed 57 of 57 gates. This was evidence that the promotion and installed-path checks succeeded for that package.

Infrastructure is part of the research

Reliable installation matters because a source-code result and an installed capability are different things. If a candidate cannot be promoted consistently, it becomes difficult to know which system a later observation describes.

This milestone improves that engineering boundary. It is not a new cognitive result. The calendar date is approximate and follows the surviving file chronology.