name	task-segmentation
description	[Task Mgmt] A Skill that segments subtasks into more granular, actionable items before starting work. AI agent MUST invoke this skill AUTOMATICALLY when moving a task to In Progress. Break down existing 2-space indented subtasks into smaller, more specific subtasks to provide clearer objectives for the agent. (user)

Task Segmentation

Segment subtasks into granular, actionable items before starting implementation.

⛔ CRITICAL: Every Task MUST Have Subtasks

A task without subtasks is INCOMPLETE. AI MUST ensure every task has at least 3 specific, actionable subtasks.

Trigger Conditions

Agent Action	Required Action
Any new task is added	⛔ MUST have 3+ subtasks immediately
Moving task to In Progress	Segment subtasks BEFORE starting work
Subtask is vague or broad	Break into specific implementation steps
Subtask takes >30 min to complete	Split into smaller units
Task has no subtasks	⛔ STOP - Add subtasks first

Workflow

BEFORE moving task to Worker
Read the task and its subtasks
Analyze each subtask for granularity
Segment vague subtasks into specific, actionable items
Update the Task document with segmented subtasks
THEN move task to Worker (use task-mover)

Segmentation Rules

When to Segment:

Subtask description is vague (e.g., "Implement feature")
Subtask covers multiple concerns (e.g., "Add UI and logic")
Subtask would take significant time to complete

When NOT to Segment:

Subtask is already specific and actionable
Subtask is a single, atomic operation
Further breakdown adds no clarity

⚠️ CRITICAL: Format Rules

ALL subtasks MUST use exactly 2-space indentation
NO deeper nesting (no 4-space or 6-space indents)
NO intermediate grouping headers (e.g., ### Phase 1)

Example

Before Segmentation:

- [ ] Implement user authentication #feature !high
  - [ ] Add login functionality
  - [ ] Handle errors

After Segmentation:

- [ ] Implement user authentication #feature !high
  - [ ] Create login form UI component
  - [ ] Add form validation logic
  - [ ] Implement API call to auth endpoint
  - [ ] Store auth token in secure storage
  - [ ] Add loading state during auth
  - [ ] Display error message for invalid credentials
  - [ ] Handle network error with retry option

Subtask Generation by Task Type

Task Type	Required Subtask Categories
New Feature	UI 설계 → 컴포넌트 생성 → 로직 구현 → API 연동 → 에러 처리 → 테스트
Bug Fix	원인 분석 → 재현 확인 → 수정 코드 작성 → 엣지 케이스 확인 → 테스트
Refactoring	기존 코드 분석 → 새 구조 설계 → 점진적 마이그레이션 → 테스트 확인
Documentation	구조 파악 → 내용 작성 → 예제 추가 → 리뷰 반영
UI/UX	레이아웃 설계 → 컴포넌트 구현 → 스타일 적용 → 반응형 처리 → 접근성 확인

More Examples

Example: New Feature Task

- [ ] 다크모드 토글 기능 추가 #feature #ui !medium
  - [ ] 다크모드 상태 저장 로직 구현 (UserDefaults)
  - [ ] ThemeManager 싱글톤 생성
  - [ ] 설정 화면에 토글 UI 추가
  - [ ] 색상 팔레트 다크모드 버전 정의
  - [ ] 전체 앱 테마 적용 확인

Example: Bug Fix Task

- [ ] 로그인 실패 시 크래시 버그 수정 #bug !high
  - [ ] 크래시 로그 분석 및 원인 파악
  - [ ] nil 체크 로직 추가
  - [ ] 에러 핸들링 코드 수정
  - [ ] 다양한 실패 케이스 테스트
  - [ ] 회귀 테스트 수행

Pre-Segmentation Checklist

Before saving any task, verify:

Task has at least 3 subtasks
Each subtask uses action verb (Create, Implement, Add, Design, Configure, Handle)
Each subtask is specific and actionable (not vague)
Each subtask is completable in 1-2 hours
Subtasks cover all aspects of the task (UI, Logic, Data, Integration, Testing)
Subtasks use exactly 2-space indentation

task-segmentation

Install Skill

SKILL.md