pnpm Upgrade

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

Steps (run from repo root)

1. Resolve the target pnpm release
   • Query the npm registry before changing the local toolchain: PNPM_VERSION=$(curl -fsSL https://registry.npmjs.org/pnpm/latest | jq -r .version).
   • Abort if the version is missing.
   • Resolve the exact package integrity: curl -fsSL "https://registry.npmjs.org/pnpm/${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.