---
phase: "01"
plan: "01-01"
status: in-progress
---
<!-- provenance: template-derived (gsd-core/templates/). NOT real-user-sourced. See #2371 — adequate for happy-path/sequence scenarios, NOT sufficient as a negative fixture asserting the engine correctly rejects input. -->

# Plan 01-01 Summary (PARTIAL — agent abandoned mid-execute)

## Completed

- Tokenizer skeleton scaffolded.

## Remaining

- Item-list builder not started.
- No tests written yet.