The sms-sites.json file was not in canonical format (sorted keys,
2-space indent, trailing newline), causing `npm run build` to fail
during the `check:content` step in Docker.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
npm doesn't support the `workspace:*` protocol (that's pnpm/Yarn).
This caused `npm install` to fail with EUNSUPPORTEDPROTOCOL during
Docker builds. Replaced both occurrences with `file:` relative paths
that npm workspaces resolves correctly.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>