**Goal:** Reviewers should apply a GitHub label `tinker-reviewed` to PRs after completing their review. **Why:** - Visually distinguish which PRs have been reviewed by the Tinker reviewer agent - Makes it easy to filter/search for reviewed vs unreviewed PRs - Could be used for automation (e.g., auto-merge or notify human) **Implementation:** 1. Reviewer workflow should add the `tinker-reviewed` label when: - Review is complete (either pass or fail) - Reviewer comments have been added 2. GitHub API integration: - Use the `gh` CLI or GitHub API to add labels - Label should be added via the reviewer skill/workflow 3. If the label doesn't exist on the repo, create it: ```bash gh label create "tinker-reviewed" --color "0E8A16" --description "PR reviewed by Tinker reviewer agent" ``` **Acceptance criteria:** - Reviewer agent adds `tinker-reviewed` label to PR after review - Label creation is handled if it doesn't exist - Workflow gracefully handles API errors