v17.1.0.rc.1

Fixed

• Release failures now provide supervised, reason-specific recovery: script/release --evaluate-head
  supports strict exact-HEAD CI evaluation for both preview and live retries, foreign claims identify the available
  holder/task/session metadata and targeted status command, and npm readiness distinguishes stale dependencies,
  pnpm-version mismatches, and package-build failures without requiring bin/setup. Fixes
  #4955.

• Fresh generated apps now preserve their resolved Shakapacker version: The installer now pins
  bundle add shakapacker --strict to the version already selected through React on Rails instead
  of allowing an older globally installed gem to downgrade the app's lockfile. The tested
  Shakapacker baseline is now 10.3.2, which includes the rack-proxy v1 development-server proxy fix
  and the macOS 27 liveness fix. Fixes
  #4947. #4948 by
  justin808.