MUSUBIX SDD Workflow Skill

This skill guides you through the complete SDD workflow for MUSUBIX projects.

Prerequisites

Before starting any development task:

1. Read steering/ directory for project context
2. Check steering/rules/constitution.md for the 9 constitutional articles
3. Review existing specs in storage/specs/

Complete Workflow

Phase 1: Requirements Definition

Step 1: Create Requirements Document (Article IV - EARS Format)

Create requirements using EARS patterns:

# REQ-[CATEGORY]-[NUMBER]

**種別**: [UBIQUITOUS|EVENT-DRIVEN|STATE-DRIVEN|UNWANTED|OPTIONAL]
**優先度**: [P0|P1|P2]

**要件**:
[EARS形式の要件文]

**トレーサビリティ**: DES-XXX, TEST-XXX

EARS Patterns:

• Ubiquitous: THE [system] SHALL [requirement]
• Event-driven: WHEN [event], THE [system] SHALL [response]
• State-driven: WHILE [state], THE [system] SHALL [response]
• Unwanted: THE [system] SHALL NOT [behavior]
• Optional: IF [condition], THEN THE [system] SHALL [response]

Step 2-3: Requirements Review Loop

Review requirements for:

• EARS format compliance
• Completeness and clarity
• Testability
• Traceability readiness

Repeat until no issues remain.

Phase 2: Design

Step 4: Create Design Document (Article VII - Design Patterns)

Create C4 model design documents:

1. Context Level: System boundaries and external actors
2. Container Level: Technology choices and container composition
3. Component Level: Internal structure of containers
4. Code Level: Implementation details

Design document template:

# DES-[CATEGORY]-[NUMBER]

## トレーサビリティ
- 要件: REQ-XXX

## C4モデル
### Level 2: Container
[PlantUML diagram]

## コンポーネント設計
[Component details]

Step 5-6: Design Review Loop

Review design for:

• Requirement coverage
• SOLID principles compliance
• Design pattern appropriateness
• Traceability to requirements

Repeat until no issues remain.

Phase 3: Task Decomposition

Step 7: Generate Tasks

Generate implementation tasks from design:

# TSK-[CATEGORY]-[NUMBER]

## 関連設計: DES-XXX
## 関連要件: REQ-XXX

## タスク内容
[Implementation task description]

## 受入基準
- [ ] Criterion 1
- [ ] Criterion 2

## 見積もり
[4時間以内を推奨]

Step 8-9: Task Review Loop

Review tasks for:

• Appropriate granularity (≤4 hours)
• Clear acceptance criteria
• Complete traceability chain

Repeat until no issues remain.

Phase 4: Implementation

Step 10: Coding & Unit Testing (Article III - Test-First)

For each task, follow Red-Green-Blue cycle:

1. Red: Write failing test first
2. Green: Write minimal code to pass
3. Blue: Refactor while keeping tests green

Add requirement IDs in code comments:

/**
 * @see REQ-INT-001 - Neuro-Symbolic Integration
 */

Step 11: Integration Testing

When required by the task:

• Run integration tests
• Verify component interactions
• Ensure end-to-end flows work correctly

Phase 5: Documentation & Completion

Step 12: Update CHANGELOG.md

Document all changes:

• New features
• Bug fixes
• Breaking changes
• Migration notes

Step 13: Update Other Documentation

If necessary, update:

• README.md
• USER-GUIDE.md
• API-REFERENCE.md
• AGENTS.md

Step 14: Git Commit & Push

git add .
git commit -m "feat/fix/chore: description"
git push

Traceability Validation (Article V)

Ensure 100% traceability throughout:

REQ-* → DES-* → TSK-* → Code → Test

CLI Commands

# Requirements
npx musubix requirements analyze <file>
npx musubix requirements validate <file>

# Design
npx musubix design generate <file>
npx musubix design patterns <context>

# Code Generation
npx musubix codegen generate <file>

# Traceability
npx musubix trace matrix
npx musubix trace validate

Constitutional Articles Checklist

• Article I: Library-First - Is this a standalone library?
• Article II: CLI Interface - Does it expose CLI?
• Article III: Test-First - Are tests written first?
• Article IV: EARS Format - Are requirements in EARS?
• Article V: Traceability - Is everything traceable?
• Article VI: Project Memory - Did you check steering/?
• Article VII: Design Patterns - Are patterns documented?
• Article VIII: Decision Records - Is ADR created?
• Article IX: Quality Gates - Are quality checks passed?