feat: add Codex-native React Doctor loop

[aidenybai]

Summary

• add a Codex-native internal plugin that continuously audits and fixes React Doctor false positives
• dynamically activate the workflow through Codex hooks instead of maintaining a separate CLI driver
• codify the ReactBench audit process: semantic root-cause cohorts, current-main verification, exact callsite evidence, true-positive controls, focused tests, fuzzing, and exact base/head parity
• isolate ChatGPT-plan authentication behind a dedicated CODEX_HOME, with no API-key fallback or committed credentials
• wrap Daytona evaluation with fixed concurrency, sandbox, repository, duration, and daily launch limits
• require loop/* branches and draft PRs while blocking merge, release, publish, tag, auth mutation, and unsafe push actions

Validation

• 9 hook tests pass
• plugin manifest and hook configuration validate
• loop skill validates
• formatting check passes
• targeted plugin lint passes

No live Codex inference or Daytona evaluation was run as part of this change.

[github-actions]

Interactive terminal E2E

Terminal Control verified the built CLI at 566a520 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