simple-task

name	simple-task
description	Implement simple features with best practices. Use when adding small features, bug fixes, or quick enhancements without the full SDD workflow. Invoked via /simple-task <description>. Use when this capability is needed.
metadata	{"author":"yi-john-huang"}

Simple Task Implementation

Implement small features, bug fixes, or quick enhancements while following best practices from the project's steering documents.

When to Use

Use /simple-task for:

• Small feature additions (e.g., "add logout button")
• Bug fixes
• Minor enhancements
• Quick refactoring

Use full SDD workflow for:

• Complex features requiring multiple components
• New modules or subsystems
• Features needing formal requirements/design review

Workflow

Step 1: Understand the Task

1. Clarify what needs to be done
2. Identify affected files/components
3. Estimate scope (if larger than expected, suggest full SDD workflow)

Step 2: Apply TDD (Test-Driven Development)

Reference: .spec/steering/tdd-guideline.md

Follow the Red-Green-Refactor cycle:

1. RED    → Write a failing test first
2. GREEN  → Write minimal code to pass
3. REFACTOR → Clean up while tests pass

Quick TDD Checklist:

• Write test before implementation
• Test describes expected behavior
• Minimal code to make test pass
• Refactor without breaking tests

Step 3: Apply Design Principles

Reference: .spec/steering/principles.md

SOLID Quick Reference:

• Single Responsibility: Each function/class does one thing
• Open/Closed: Extend behavior without modifying existing code
• Liskov Substitution: Subtypes must be substitutable
• Interface Segregation: Small, focused interfaces
• Dependency Inversion: Depend on abstractions

Other Principles:

• DRY: Don't repeat yourself - extract common logic
• KISS: Keep it simple - avoid unnecessary complexity
• YAGNI: You aren't gonna need it - only implement what's required

Step 4: Code Quality Review

Reference: .spec/steering/linus-review.md

Before finalizing, ask:

1. Taste: Is the solution elegant? Can special cases be eliminated?
2. Simplicity: Can it be simpler? Fewer lines? Less nesting?
3. Data Structures: Is the right data structure used?
4. Breaking Changes: Does this break existing functionality?

Quality Checklist:

• Functions are short and focused
• No more than 3 levels of indentation
• Clear, descriptive naming
• No unnecessary complexity

Step 5: Security Check

Reference: .spec/steering/owasp-top10-check.md

Quick Security Checklist:

• Input validation (sanitize user inputs)
• No SQL/command injection (use parameterized queries)
• Access control enforced
• No secrets in code (use env vars)
• Proper error handling (no stack traces to users)

Step 6: Implement and Test

1. Write the failing test (RED)
2. Implement minimal solution (GREEN)
3. Run tests to confirm pass
4. Refactor if needed
5. Run full test suite
6. Verify no lint/type errors

Reference Documents

These steering documents provide detailed guidance:

Document	Content
tdd-guideline.md	TDD methodology, test pyramid, Red-Green-Refactor
principles.md	SOLID, DRY, KISS, YAGNI, Separation of Concerns
linus-review.md	Code quality, "good taste", simplicity standards
owasp-top10-check.md	Security checklist (OWASP Top 10)

Output

After implementing, provide:

## Implementation Summary

**Task:** {what was implemented}

**Changes:**
- {file1}: {what changed}
- {file2}: {what changed}

**Tests Added:**
- {test description}

**Principles Applied:**
- TDD: {how TDD was followed}
- Design: {which principles were applied}
- Security: {security considerations}

**Ready for:** {commit / further review / testing}

Example

User: /simple-task add a logout button to the navbar

Claude:
1. Understand: Add logout button that clears session and redirects to login
2. TDD: Write test for logout functionality first
3. Principles: Single responsibility - logout logic in AuthService
4. Security: Ensure session is properly invalidated
5. Implement: Button component + logout handler
6. Test: Verify all tests pass

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