changes-tour-guide

name	changes-tour-guide
description	Walk through recent code changes pedagogically: a two-phase markdown guide (overview, then detailed explanations) in dependency order.

Code Change Review Guide Creator

Create a structured markdown document that walks a reader through code changes in a clear, logical, and pedagogical manner using a two-phase approach.

User Scope

<user_scope> $ARGUMENTS </user_scope>

Git Context

% git log --oneline -20
!`git log --oneline -20`

% git status --short
!`git status --short`

% git diff --stat
!`git diff --stat`

% git diff --cached --stat
!`git diff --cached --stat`

Determining What to Review

Determine which code changes to include in this review guide:

• If the user provided specific scope or direction in user_scope above, focus on those changes
• If no specific scope is provided, use conversation history and git context to identify the most recent or relevant code changes
• Use git diff, git show, or read files directly to gather full change details

Planning (in thinking block)

Before writing the review guide, plan your approach inside a <planning> section in your thinking block:

1. List all changed files with a brief description of what changed in each
2. Determine logical order: foundational changes before dependent ones, each change builds on previous understanding
3. Identify high-level concepts: architectural decisions, design patterns, key concepts to explain before implementation details
4. Note important design decisions: significant choices, alternatives considered, tradeoffs
5. Plan two-phase structure: write an explicit mapping showing which files appear in which order in both Phase 1 and Phase 2 — the order MUST be consistent across both phases

Thorough planning leads to better guides. It's OK for the planning section to be long.

Writing the Review Guide

Structure (required)

Phase 1: High-Level Overview

• Brief explanation of each file/component that changed
• Concise — just enough to understand what and why
• Follow the logical order from planning

Phase 2: Detailed Walkthrough

• Detailed explanations for each file/component
• SAME order as Phase 1
• Include implementation details, code snippets, thorough explanations
• Focus on the "why" and "how", not just the "what"

Content Guidelines

Include:

• High-level summary of all changes
• Key architectural or design decisions with rationale
• Alternatives considered and why they were rejected
• Notable implementation details
• Tradeoffs or limitations
• Code snippets where helpful to illustrate key points

Avoid:

• Line-by-line code explanations
• Trivial changes unless relevant to understanding
• Excessive jargon without explanation
• Presenting details before needed context
• Including every line of changed code

Writing Style

• Clear and concise — a guided tour, not exhaustive documentation
• Explain reasoning behind key decisions
• Help the reader understand rationale and approach
• Language appropriate for developers familiar with the codebase

Formatting

• Use headers (##, ###) to organize sections logically
• Use code blocks with syntax highlighting when showing code
• Use bullet points or numbered lists where appropriate
• Use bold/italic for emphasis

Output

After completing planning in the thinking block, write the review guide inside <review_guide> tags following this structure:

<review_guide>
# Code Change Review Guide

## Overview
[High-level summary of all changes]

## Phase 1: High-Level Overview

### [First Component/File - in logical order]
[Brief explanation]

### [Second Component/File - in logical order]
[Brief explanation]

## Phase 2: Detailed Walkthrough

### [First Component/File - same order as Phase 1]
[Detailed explanation with code snippets and rationale]

### [Second Component/File - same order as Phase 1]
[Detailed explanation with code snippets and rationale]

## Summary
[Key takeaways]
</review_guide>

Save the guide as a markdown file in the memory-bank/ directory with a descriptive filename based on the changes reviewed (e.g., memory-bank/auth-refactor-review-guide.md). The final output should contain only the review guide — do not duplicate planning work from the thinking block.