---
id: TASK-8
title: Document private schema helpers
status: Done
assignee:
  - '@codex'
created_date: '2026-02-24 13:55'
updated_date: '2026-02-24 14:02'
labels: []
dependencies: []
references:
  - src/config/schema.rs
documentation:
  - docs/spec.md
  - docs/plan.md
---

## Description

<!-- SECTION:DESCRIPTION:BEGIN -->
Add Rust doc comments for private helper functions in schema module to satisfy missing_docs_in_private_items and match existing style.
<!-- SECTION:DESCRIPTION:END -->

## Acceptance Criteria
<!-- AC:BEGIN -->
- [x] #1 `src/config/schema.rs` has doc comments for `default_build_root` consistent with existing module style.
- [x] #2 `just check` shows no missing-doc warnings for schema helpers.
<!-- AC:END -->

## Implementation Notes

<!-- SECTION:NOTES:BEGIN -->
Started documenting private schema helpers.

Added doc comment for default_build_root in src/config/schema.rs. `just check` not run yet.

`just check -- -D warnings` now passes with schema helper docs in place.
<!-- SECTION:NOTES:END -->
