Create Walkthrough Artifact

Generate .agent/{branch-name}/walkthrough.md — the final summary for PR delivery.

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Prerequisites

Before invoking this skill:

1. All tests must be passing
2. Documentation must be updated
3. plan.md must exist and have an up-to-date Progress Log
4. You must be inside the worktree

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Procedure

Step 1: Determine file location and gather information

Run this command to get the artifact path and gather git information — do NOT guess the branch name:

BRANCH=$(git branch --show-current) && mkdir -p ".agent/${BRANCH}" && echo "Artifact path: .agent/${BRANCH}/walkthrough.md" && echo "---" && git diff --stat main...HEAD && echo "---" && git log --oneline main...HEAD

From plan.md (read the file — must run in the same shell session as above, or re-assign BRANCH):

BRANCH=$(git branch --show-current) && cat ".agent/${BRANCH}/plan.md"

Extract: Summary, Decisions, Requirements, File Changes table.

From test results:

Recall or re-run the test suite to confirm current status.

Step 2: Write walkthrough.md

Create the file at the path from Step 1 using the template below. Do NOT hardcode or guess the branch name.

Step 3: Present to user

After writing the file, output the walkthrough content directly in the conversation so the user sees it immediately.

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Template

All timestamps MUST use full ISO 8601 with time: YYYY-MM-DDTHH:MM:SSZ

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created: { TIMESTAMP }
branch: { BRANCH }
task: { TASK_DESCRIPTION }
pr: { PR_NUMBER }
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# Walkthrough: {TASK_DESCRIPTION}

## Quick Reference

- **Branch**: `{BRANCH}`
- **PR**: #{PR_NUMBER}
- **Worktree**: `{WORKTREE_PATH}`

## Summary

<!-- 2-3 sentences: what was implemented and the key outcome -->

## Changes

| File | Change | Purpose |
| ---- | ------ | ------- |

<!-- List ALL modified/created/deleted files from git diff -->

## Key Decisions

<!-- Numbered list of important decisions made during implementation.
     Pull from plan.md Decisions table — include only the most significant ones. -->

1. {decision and brief rationale}

## Testing Results

<!-- Test outcomes with pass/fail indicators -->

- [x] {test category}: {result summary}
- [x] {test category}: {result summary}

## How to Verify

<!-- Step-by-step instructions for a reviewer to verify the changes work -->

1. {step}
2. {step}
3. {step}

## Next Steps

1. Review draft PR
2. Mark as ready for review
3. After merge: `gw remove {BRANCH}`

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Validation Checklist

After writing walkthrough.md, verify:

• File location: Path from git branch --show-current — inside the worktree
• Frontmatter: created, branch, task, pr — all filled
• Timestamps: ISO 8601 with time
• Summary: Concise, describes what was done and the outcome
• Changes table: Matches actual git diff --stat output (no missing files)
• Key Decisions: Pulled from plan.md, covers the important choices
• Testing Results: Reflects actual test run outcomes
• How to Verify: Actionable steps a reviewer can follow
• Presented to user: Walkthrough content shown in conversation (not just written to file)

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Delivery

The walkthrough is delivered in two ways:

1. File — saved to .agent/{branch-name}/walkthrough.md for reference and handoff
2. Inline — presented in the conversation with PR link so the user sees the summary immediately

Both are mandatory. Do not announce completion without showing the walkthrough.