Write Overview

Generate structured overview content by analyzing commit history for a branch.

Collect Commits

Run the bundled script to collect commit information:

bash ${CLAUDE_PLUGIN_ROOT}/skills/write-overview/sh/collect-commits.sh [base-branch]

Default base branch is main.

Output Format (JSON)

{
  "commits": [
    {
      "hash": "abc1234",
      "subject": "Add feature X",
      "body": "Detailed description of the change...",
      "timestamp": "2026-01-15T10:30:00+09:00"
    }
  ],
  "count": 15,
  "base_branch": "main"
}

Content Structure

Generate JSON with four components:

1. Overview

A 2-3 sentence summary capturing the branch essence:

• What was the main goal?
• What approach was taken?
• What was achieved?

Write in past tense. Synthesize from commit subjects.

2. Highlights

Array of 3-5 meaningful changes:

• Extract from commit subjects
• Group related commits into single highlights
• Focus on user-visible or architecturally significant changes
• Order by importance, not chronology

3. Motivation

A paragraph synthesizing the "why":

• What problem or opportunity started this work?
• Why was this approach chosen?
• What constraints or requirements shaped the work?

Write as narrative prose, not a list.

4. Journey

Two parts:

• mermaid: A flowchart showing work progression
• summary: 50-100 word summary of development journey

Flowchart Guidelines

flowchart LR
  subgraph Phase1[Initial Setup]
    direction TB
    a1[First step] --> a2[Second step]
  end

  subgraph Phase2[Core Work]
    direction TB
    b1[Third step] --> b2[Fourth step]
  end

  Phase1 --> Phase2

• Use flowchart LR for horizontal timeline
• Use direction TB inside each subgraph for vertical flow
• Group by theme: each subgraph is one concern area
• Connect subgraphs in timeline order
• Maximum 3-5 subgraphs per diagram

Output Format

Return JSON:

{
  "overview": "2-3 sentence summary capturing the branch essence",
  "highlights": [
    "First meaningful change",
    "Second meaningful change",
    "Third meaningful change"
  ],
  "motivation": "Paragraph synthesizing the 'why' from commit context",
  "journey": {
    "mermaid": "flowchart LR\n  subgraph Phase1[Initial Work]\n    direction TB\n    a1[Step 1] --> a2[Step 2]\n  end\n  ...",
    "summary": "50-100 word summary of the development journey"
  }
}