Publish governance baseline to main

[admin-raintree]

Summary

• publish the local main governance baseline changes
• keep repository standards files, Bun package-manager state, and CI updates on main

Validation

• estate-wide engineering-standards audit reports 0 active repo issues
• local per-repo verification was run where practical; repo-specific harness/env failures are not introduced by this baseline

[zacharyr0th]

Approving governance baseline publication to main.