PR review aggregate workflow

[ulises-jeremias]

Summary

Optional aggregator/status for PR validation.

CNA mapping

CNA: pr-review.yml.

Acceptance criteria

• Workflow exists with clear job responsibilities
• Permissions least-privilege

Blocked by

none

Blocks

none

Reference

Parity matrix (workspace): knowledge/create-python-app-parity-matrix.md
Reference repo: https://github.com/Create-Node-App/create-node-app

Parent epic

#7