---
id: TASK-9.3
title: Expand private API documentation to match public API depth
status: Done
assignee:
  - codex
created_date: '2026-02-24 18:23'
updated_date: '2026-02-24 18:32'
labels: []
dependencies: []
parent_task_id: TASK-9
---

## Description

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Bring private API documentation up to the same standard as public APIs, including full descriptions of parameters, return values, and error conditions.
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## Acceptance Criteria
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- [x] #1 Private functions and methods document parameters, return values, and error conditions where applicable.
- [x] #2 Brief-only private docs are replaced with the full format defined in the style guide.
- [x] #3 Coverage is consistent across modules touched by the style update (no remaining undocumented private API behavior).
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## Implementation Plan

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1. Enumerate private functions in `src/` that still have brief or missing docs (focus on modules touched in TASK-9.2).
2. Expand docs to include arguments, returns, and errors where applicable, matching the new style guide.
3. Re-scan to ensure private API coverage is consistent and no brief-only docs remain.
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## Implementation Notes

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Expanded private function documentation to include arguments, returns, and error conditions where applicable across core modules touched in TASK-9.2. Tests not run (documentation-only).
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## Final Summary

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Expanded private API docs in `src/` to match public API depth by adding detailed arguments/returns/errors sections to private helper functions (command execution, config discovery, and schema helpers). Tests not run (documentation-only).
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