Review proposal files in localdocs/localdocs/proposals/ and decide whether to apply them to the upstream python-project-template repository. Use when evaluating proposals generated by template-upstream, deciding which ones to accept or reject, and applying accepted ones to the template repo. Triggers on: "proposal 검토", "제안 검토", "template에 반영할지", "proposals 리뷰", "upstream 반영 결정".