test(cli): cover staged rule parity

[aidenybai]

Summary

• reproduce the reported no-clone-element case with a newly staged file
• verify that full and staged scans both report the enabled rule
• keep the check at the built CLI boundary, including config loading and Git index materialization

Current main already has the expected behavior, so this PR adds only the regression guard.

Validation

• nr test
• nr lint
• nr typecheck
• nr format:check
• nr build
• nr smoke:json-report

Closes #1691

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/eslint-plugin-react-doctor@1719

npm i https://pkg.pr.new/oxlint-plugin-react-doctor@1719

npm i https://pkg.pr.new/react-doctor@1719

commit: afc4b36

[github-actions]

React Doctor found no new issues. 🎉

_{Reviewed by React Doctor for commit afc4b36.}

[github-actions]

Interactive terminal E2E

Terminal Control verified the built CLI at afc4b36 in a real PTY:

• selected a project interactively and observed Scanning... before the three-second Git delay completed
• waited for the clean result and exercised the compact report
• opened copy context and the GitHub Actions confirmation, then cancelled safely

Download the edited MP4 and PNG evidence