chore: sync main ancestry before v0.5.8 promotion

[mohanagy]

Refs #350.

Synchronizes the prior v0.5.7 promotion merge from main back into development before the v0.5.8 promotion.

This is an ancestry-only maintenance sync: main contributes its prior promotion merge commit, while development retains the already-reviewed v0.5.8 tree. It is required because strict branch protection will not update the protected development branch directly while required checks are expected.

After this merges with current-head checks, #354 can be re-evaluated as an up-to-date development to main promotion.

[mohanagy]

Superseded by #356. Using main directly as the head remained behind protected development, so strict branch protection could not merge it. #356 starts from current development and adds current main as a second parent with an identical tree, enabling the ancestry sync through normal protected checks.