improve-ut（改善 UT）

Improve Unit Tests (UT)

Use this skill to improve test coverage after code changes.

Usage

$improve-ut

Source of Truth

Discover and read unit-test specs dynamically:

# Discover available packages and their spec layers
python3 ./.trellis/scripts/get_context.py --mode packages

Look for packages with unit-test spec layer in the output. For each discovered unit-test/ directory, read all spec files inside it (e.g., index.md, conventions.md, integration-patterns.md, mock-strategies.md).

If this skill conflicts with the unit-test specs, the specs win.

Execution Flow

1. Inspect changed files:

- git diff --name-only

1. Decide test scope using unit-test specs:

- unit vs integration vs regression - mock vs real filesystem flow

1. Add/update tests using existing project test patterns
2. Run validation:

pnpm lint
pnpm typecheck
pnpm test

1. Summarize decisions, updates, and remaining test gaps.

Output Format

## UT Coverage Plan
- Changed areas: ...
- Test scope (unit/integration/regression): ...

## Test Updates
- Added: ...
- Updated: ...

## Validation
- pnpm lint: pass/fail
- pnpm typecheck: pass/fail
- pnpm test: pass/fail

## Gaps / Follow-ups
- <none or explicit rationale>