create-pr

# Create Pull Request

Create a pull request with a well-structured description based on the branch changes.

## Instructions

### Gates (run in order)

Do not draft or run `gh pr create` until each step passes.

1. **Branch gate:** `git branch --show-current` is not the default branch (`main`, `master`, or the repo’s documented default). **Pass:** branch name is printed and satisfies this.
2. **Evidence gate:** You have run the commands in [Gather Context](#1-gather-context) for the same `main..HEAD` (or `origin/main..HEAD` if local `main` is missing) range you will summarize. **Pass:** you can name at least one commit subject and one area of files changed without inventing details.
3. **Template gate:** The final PR title and body contain no unreplaced placeholders (`<...>`, `TODO`, `TBD`). Optional sections with no content are removed, not left as stubs. **Pass:** a quick scan finds no angle-bracket placeholders or filler tokens.
4. **Create gate:** `gh pr create` exits successfully and prints a PR URL (or the PR number/URL from `gh` output). **Pass:** URL (or id) is recorded; if the command fails, do not claim the PR was created.

### 1. Gather Context

First, collect information about the changes:

```bash
# Get current branch and verify it's not main
git branch --show-current

# Get commit history for this branch
git log --oneline main..HEAD

# Get detailed commit messages for context
git log --format="### %s%n%n%b" main..HEAD

# Get file change statistics
git diff --stat main..HEAD

# Get the actual diff for understanding changes
git diff main..HEAD
```

### 2. Analyze the Changes

Based on the gathered information, determine:

- **What changed**: Categorize changes (features, fixes, refactors, docs, tests)
- **Why it changed**: Infer motivation from commit messages and code changes
- **Impact**: Breaking changes, new dependencies, migrations needed
- **Testing**: What tests were added/modified, how to verify manually

### 3. Check for Related Issues

Look for issue references:
- In commit messages (e.g., "fixes #123", "closes #456")
- In branch name (e.g., `fix/issue-123-description`)
- In code comments or TODOs addressed

### 4. Generate PR Description

Create the PR using this template structure:

```bash
gh pr create --title "<type>(<scope>): <description>" --body "$(cat <<'EOF'
## Summary

<1-3 sentence overview of what this PR does and why>

## Changes

<Categorized bullet list of changes>

### Added
- <new features or capabilities>

### Changed
- <modifications to existing functionality>

### Fixed
- <bug fixes>

### Removed
- <deprecated or removed functionality>

## Motivation

<Why were these changes needed? What problem does this solve?>

## Testing

<How was this tested?>

- [ ] Unit tests added/updated
- [ ] Integration tests added/updated
- [ ] Manual testing performed

### Manual Testing Steps

<If applicable, steps to manually verify the changes>

## Breaking Changes

<If any, describe what breaks and migration path. Remove section if none.>

## Related Issues

<Link to related issues. Remove section if none.>

- Closes #<issue_number>
- Related to #<issue_number>

## Checklist

- [ ] Code follows project style guidelines
- [ ] Self-review completed
- [ ] Tests pass locally
- [ ] Linting passes
- [ ] Documentation updated (if needed)
EOF
)"
```

Optionally append a footer trailer per project convention (e.g. a tool-attribution line). Omit it when the project has no such convention.

### 5. Title Format

Use conventional commit format for the PR title:
- `feat(scope): add new feature`
- `fix(scope): correct bug behavior`
- `refactor(scope): restructure without behavior change`
- `docs(scope): update documentation`
- `test(scope): add or modify tests`
- `chore(scope): maintenance tasks`

### 6. Apply Labels

After creating the PR, apply appropriate labels based on the changes. Use `gh pr edit <number> --add-label <label>`.

Check the repository's available labels first:
```bash
gh label list
```

#### Common Type Labels

| Label | When to Use |
|-------|-------------|
| `enhancement` | New features, capabilities, or improvements |
| `bug` | Bug fixes |
| `documentation` | Documentation-only changes |
| `breaking-change` | **User-facing** breaking changes requiring migration |

#### Breaking Change Criteria

Only apply `breaking-change` for **user-facing** changes that require users to modify their:
- Configuration files
- CLI invocations
- API integrations

Do NOT apply for internal refactors unless they affect external consumers.

### 7. After Creation

After creating the PR:
1. Display the PR URL with applied labels
2. Suggest adding reviewers if appropriate
3. Note if any CI checks need to pass

## Guidelines

**DO:**
- Be specific about what changed and why
- Include testing evidence
- Link related issues
- Note breaking changes prominently
- Remove empty optional sections

**DON'T:**
- Include irrelevant commits (keep PR focused)
- Leave placeholder text in the description
- Skip the testing section
- Create PRs without running local checks first