The root `package.json` carries no install or postinstall script, so the
guidance to rely on "the composite install script ... which installs both
subprojects" sends the reader after something that does not exist, and
`client/.npmrc` told them the same thing in a comment.
The install section also contradicted itself: it opened by telling the reader
to write the SheetJS registry token into `client/.npmrc`, and closed by
explaining that `client/.npmrc` is a tracked policy file that must not carry a
token (the pre-commit hook rejects one). The token goes in the user config,
which is what the first block now says.
The install sequence itself is unchanged - root `npm ci`, then `client` and
`sas` explicitly - because that is what the repo actually needs.
dc