---
phase: "01"
plan: "01-01"
status: complete
---
<!-- 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

## Completed

- Tokenizer implemented and passing its own tests.

## Outcome

Phase 1 tokenizer work is done.