# 04: Optional sections: checkpoint tracker, admin/roles, login page

Part of: ../spec.md

**What to build:** The skill asks which optional sections to build and builds only those:
- **Checkpoint tracker:** numbered boxes that go pending → active → done, or stuck.
- **Admin/roles screen:** admin or operator. The admin nav item is hidden from operators.
- **Login page:** UI only. It calls whatever auth the project already has.

Sections that aren't picked leave no code behind.

**Blocked by:** 01

**Status:** ready-for-agent

- [ ] The skill asks for the optional sections with a multi-select and builds only the chosen ones.
- [ ] Checkpoint tracker: the page check pushes checkpoint-state events and asserts each box shows pending, active, done or stuck.
- [ ] Admin/roles: the page check asserts the admin nav and screen appear for the admin role and are hidden for operators.
- [ ] Login page: renders in the chosen theme, light and dark, and hands off to the project's auth or a stub.
- [ ] With no optional sections picked, the output contains no leftover markup, scripts or styles for them.