pnpm Upgrade

Use these steps to update pnpm and CI pins without blunt search/replace.

Steps (run from repo root)

1. Update pnpm locally

   • Try pnpm self-update; if pnpm is missing or self-update fails, run corepack prepare pnpm@latest --activate.
   • Capture the resulting version as PNPM_VERSION=$(pnpm -v).

2. Resolve pnpm package integrity

   • Query npm registry for the exact package integrity: curl -fsSL "https://registry.npmjs.org/pnpm/${PNPM_VERSION}" | jq -r .dist.integrity.
   • Store the result as PNPM_INTEGRITY.
   • Abort if the integrity is missing or does not start with sha512-.
   • Convert the base64 digest after sha512- to lowercase hex, for example:

     printf '%s' "${PNPM_INTEGRITY#sha512-}" | base64 -d | xxd -p -c 256
     

   • Store the result as PNPM_SHA512_HEX.