# OpenSpec Change: enterprise-readline

**Change ID:** enterprise-readline  
**Date:** 2026-04-20  
**Status:** Shipped  
**Spec:** [docs/superpowers/specs/2026-04-20-readline-cli-design.md](/docs/superpowers/specs/2026-04-20-readline-cli-design.md)

## Summary

Introduces `@suaveplan/readline` as a new `universal/platform` package providing terminal I/O primitives: AsyncGenerator line reader (`readLines`), interactive prompt interface (`createInterface`), and byte scanner engine. This package satisfies `@suaveplan/cli`'s prompt module dependency on a universal readline abstraction instead of `node:readline` directly.

## ADDED Requirements

- `readLines(stream, signal?)` — async generator yielding UTF-8 lines
- `createInterface({ input, output?, signal? })` — interactive readline interface with `question()` and `close()`
- `ByteScanner` — low-level byte scanner engine
- OTel spans on `createInterface` operations
- AbortSignal support throughout
- 100% istanbul coverage