# Implementation plan — {{slug}}

> Authoritative per-story detail. Each story is bite-sized and TDD where it
> applies: write a failing test, implement, run green, then advance the tracker.

## Goal
<!-- Restate the goal and the architecture in one short paragraph. -->

## Tech Stack
- TypeScript, vitest, tsc --noEmit.

## Stories

### S-M1-1
- **Files:**
- **Steps:**
  1. Write a failing test.
  2. Implement.
  3. Run green; typecheck; advance the tracker.

## Self-review (coverage)
<!-- Map every requirement/defect to ≥1 story. -->