pr-stacking（公关堆叠）

PR Stacking

Break large features into logical, dependent PRs for better code quality and easier reviews.

Prerequisites

# Install GitHub CLI (required for PR creation)
brew install gh        # macOS
# or: sudo apt install gh   # Ubuntu/Debian

# Authenticate
gh auth login

When to Stack

Stack PRs when:

• Feature spans multiple logical steps (frontend + backend, model + UI)
• Change exceeds ~300 lines of diff
• Work can be merged incrementally

Skip stacking for:

• Single-purpose bug fixes
• Small, isolated changes
• Refactoring within one file

Quick Start

# 1. Create first PR branch from main
git checkout main && git pull
git checkout -b feat/user-api

# 2. Make changes, commit, push
git add . && git commit -m "Add user API endpoint"
git push -u origin feat/user-api

# 3. Stack: create dependent branch FROM current branch
git checkout -b feat/user-ui  # branches from feat/user-api

# 4. Continue working on dependent changes
git add . && git commit -m "Add user profile component"
git push -u origin feat/user-ui

Core Workflow

Branch Naming

feat/<feature>-1-<step>   # First in stack
feat/<feature>-2-<step>   # Second in stack
feat/<feature>-3-<step>   # Third in stack

Example:

feat/dark-mode-1-theme-context
feat/dark-mode-2-toggle-component
feat/dark-mode-3-persist-preference

PR Descriptions

Include stack context in PR body:

## Stack Context
- **Depends on**: #123 (theme context)
- **Followed by**: #125 (persist preference)

## This PR
Adds toggle component for switching themes.

Merge Order

Merge from bottom to top:

1. Merge base PR first (#123 theme context)
2. Rebase dependent PR onto updated main
3. Merge next PR (#124 toggle component)
4. Repeat until stack is fully merged

Rebasing Stacked Branches

When base PR changes:

# Update base branch
git checkout feat/dark-mode-1-theme-context
git pull origin feat/dark-mode-1-theme-context

# Rebase dependent branch
git checkout feat/dark-mode-2-toggle-component
git rebase feat/dark-mode-1-theme-context

# Force push (branch only, never main)
git push --force-with-lease

References

• references/workflow-steps.md - Detailed step-by-step guide
• references/rebase-guide.md - Handling conflicts and rebasing