Without a "test" script the package was invisible to `turbo test` —
private-editor's CI runs `bun run test` (= `turbo test`), which only
walks workspace packages that declare a test runner. Mirrors mcp and
nodes which already do this.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
c683c04c39