Sprint Closure Skill

Patterns and templates for comprehensive sprint closure workflow.

When to Use

•End of sprint cycle (before retrospective meeting)
•Archiving sprint artifacts
•Capturing and integrating lessons learned
•Generating consolidated reports

Report Types Inventory

Sprint closure discovers and consolidates these report types:

Report Type	Location	Purpose
PR Reviews	`reports/pr-reviews/`	Code review findings
Test Quality	`reports/test-quality/`	TDD compliance
Security Audits	`reports/security-audit/`	OWASP findings
QA Reports	`reports/qa/`	Quality assurance
Architecture	`tasks/sprints/*/`	Design decisions
Research	`tasks/research/`	Technical investigations

LESSONS-LEARNED.md Structure

Header (create if not exists):

markdown

# Lessons Learned (Living Document)

Last updated: [YYYY-MM-DD] (Sprint [N] closure)

## Status Legend

- ✅ **PROCESSED** - Fully implemented, no action needed
- ⚠️ **PARTIAL** - Partially implemented, ongoing work
- ❌ **TODO** - Identified but not yet implemented

Lesson Format (Full Detail for Current Sprint):

markdown

### Lesson: [Descriptive Title]

**Discovered in:** Sprint [N] ([context])
**What we learned:**
[Description of the lesson]

**Implementation:**

- ✅ **Code:** [specific file paths or N/A]
- ✅ **Tests:** [test file paths or patterns]
- ✅ **Docs:** [documentation file paths]
- ✅ **Skills:** [skill file paths]
- ✅ **Commands:** [command file paths]

**Status:** ✅ PROCESSED | ⚠️ PARTIAL | ❌ TODO
**Sprint:** [N]

Compression Rules (Phase 4.0)

Before adding new sprint lessons, compress previous PROCESSED lessons:

BEFORE (15-20 lines):

markdown

### Lesson: Test Immutability Prevents Test Cheating

**Discovered in:** Sprint 2 (Backend development, day-02)
**What we learned:**
LLM agents may delete tests instead of fixing code when tests fail...
[full details]

**Implementation:**

- ✅ **Code:** N/A (process change)
- ✅ **Tests:** All tests committed separately...
- ✅ **Docs:** `docs/TDD-WORKFLOW.md`...
  ...

**Status:** ✅ PROCESSED
**Sprint:** 2

AFTER (4-5 lines):

markdown

### Lesson: Test Immutability Prevents Test Cheating

Commit tests separately in RED phase makes them immutable. Any modification during GREEN/REFACTOR is visible in git history.
**WHERE:** docs/TDD-WORKFLOW.md, .claude/skills/tdd-workflow/, red-tdd/green-tdd/refactor-tdd commands
**STATUS:** ✅ PROCESSED | **SPRINT:** 2

Compression Criteria:

•✅ PROCESSED lessons from Sprint < N → Compress
•⚠️ PARTIAL lessons → Keep full detail (action items remain)
•❌ TODO lessons → Keep full detail (not yet implemented)

Retrospective Template

markdown

# Sprint [N] Retrospective

**Date:** [YYYY-MM-DD]
**Duration:** [Start] to [End]

## Sprint Goal

[Extract from planning or infer from artifacts]

## What Went Well ✅

- High test coverage: [percentage]%
- Security score: [before] → [after]
- [Other positive outcomes]

## What Didn't Go Well ❌

- Time estimation: [planned] vs [actual]
- [Challenges encountered]

## Metrics 📊

| Category           | Value   | Target  | Status |
| ------------------ | ------- | ------- | ------ |
| Test Coverage      | [X]%    | 80%/75% | ✅/❌  |
| Security Score     | [X]/100 | 90      | ✅/❌  |
| Features Completed | [X]/[Y] | 100%    | ✅/❌  |

## Action Items for Next Sprint

| Action | Owner | Priority     | Category   |
| ------ | ----- | ------------ | ---------- |
| [Item] | [Who] | High/Med/Low | [Category] |

## Lessons Learned Summary

[Top 5 lessons with links to LESSONS-LEARNED.md]

Archive Directory Structure

code

tasks/archive/[YYYY-MM]/sprint-[N]/
├── README.md                    # Sprint summary
├── RETROSPECTIVE-[date].md      # Retrospective
└── [daily directories]          # Preserved from sprint
    ├── tests/
    ├── implementation/
    ├── refactor/
    └── security/

Report Summary Templates

QA Summary:

markdown

# QA Summary - Sprint [N]

## Test Quality Metrics

| Criterion        | Violations | Resolution |
| ---------------- | ---------- | ---------- |
| Business logic   | [count]    | [status]   |
| Assertions       | [count]    | [status]   |
| Error paths      | [count]    | [status]   |
| Edge cases       | [count]    | [status]   |
| Behavior testing | [count]    | [status]   |

Security Summary:

markdown

# Security Summary - Sprint [N]

## OWASP Top 10 Coverage

| Category            | Status | Findings |
| ------------------- | ------ | -------- |
| A01 Broken Access   | ✅/❌  | [count]  |
| A02 Crypto Failures | ✅/❌  | [count]  |

...

## Risk Register

| Severity | Count | Resolved | Deferred |
| -------- | ----- | -------- | -------- |
| CRITICAL | [X]   | [Y]      | [Z]      |
| HIGH     | [X]   | [Y]      | [Z]      |

Integration Workflow (Phase 4.5)

After adding lessons to LESSONS-LEARNED.md:

•Identify affected files using .claude/LESSONS-INTEGRATION.md
•Add references to skills/commands (embedded <10 lines, link >30 lines)
•Update integration map in .claude/LESSONS-INTEGRATION.md

•Validate integration:

bash

grep -r "LESSONS-LEARNED.md#" .claude/ app/CLAUDE.md

Lesson Categories

Category	Example Topics
TDD Workflow	Test immutability, 5 criteria, RED/GREEN/REFACTOR
Multi-Worktree	Database isolation, schema ownership, port mapping
Security Patterns	Backend permissions, OWASP, input validation
Architecture	Strategy Pattern, type safety, permission helpers
Test Quality	Mock patterns, integration vs unit, coverage
Tooling	Wasp 0.20.1, safe-start, db-manager
Process	Phased commands, artifact tracking, sprintdag
Anti-Patterns	Client-side auth, useAction overuse, test theater

References

•Command: /close-sprint (complete orchestration)
•Integration map: .claude/LESSONS-INTEGRATION.md
•Living document: docs/LESSONS-LEARNED.md