veto-changelog

name: veto-changelog description: >- Generate CHANGELOG.md entry from recent commits in conventional format. Use this skill whenever the user asks to: write release notes, generate a changelog, prepare a version release, document what changed between tags, or create a new CHANGELOG entry. Do NOT manually edit CHANGELOG.md without this skill — it ensures proper formatting, user-perspective writing, and version consistency with Cargo.toml. argument-hint: "[tag-version]" targets: [claude]

Generate a CHANGELOG.md entry for a release. $ARGUMENTS specifies the tag version (e.g., v0.1.11) or omit to auto-detect via git describe --tags --abbrev=0.

Scope: This skill updates CHANGELOG.md only. It does NOT write Rust code or modify Cargo.toml.

Workflow

Step 1: Determine Version Range

# Auto-detect latest tag
LATEST_TAG=$(git describe --tags --abbrev=0)
PREV_TAG=$(git describe --tags --abbrev=0 "${LATEST_TAG}^")
CARGO_VERSION=$(grep '^version' Cargo.toml | head -1 | cut -d'"' -f2)

echo "Generating changelog: $PREV_TAG → $LATEST_TAG"
echo "Cargo.toml version: $CARGO_VERSION"

Verify version consistency:

• Tag version (without v prefix) should match Cargo.toml version
• Warn if mismatch (the pre-push hook also checks this)

Step 2: Collect Commits

git log "${PREV_TAG}..${LATEST_TAG}" --oneline --no-merges

Step 3: Categorize Changes

Group by conventional commit type:

Step 4: Read Existing Style

Read the most recent 2-3 entries in CHANGELOG.md to match tone and structure. Always match the latest entries.

Step 5: Write User-Facing Entry

Write from the user's perspective:

Include:

• New rules or risk categories with examples
• New CLI commands or flags with usage
• New integrations (setup commands)
• Bug fixes affecting user-visible behavior
• Auth method changes

Exclude:

• Internal test refactoring
• Code formatting changes
• CI/CD tweaks
• Internal struct renames

Step 6: Update CHANGELOG.md

Insert new entry at the top, after the header:

## [X.Y.Z] - YYYY-MM-DD

### New Features

- **Feature name** — description with `inline code` for commands
  ```bash
  veto command --flag    # usage example

Bug Fixes

• Fixed specific user-visible behavior

Breaking Changes

• Renamed old-flag to new-flag

Style rules:
- Version uses `[X.Y.Z]` without `v` prefix in heading
- Feature bullets use `**bold name** — em-dash description`
- Code blocks use `bash` language tag
- Only include sections that have content

## Rules

- **User perspective** — write for users, not developers
- **No fabricated links** — never invent URLs
- **Verify features exist** — grep source before claiming a feature was added
- **No internal noise** — exclude test-only, CI-only, or style-only changes
- **Version consistency** — verify Cargo.toml matches tag version