Cursor Development Rules

Cursor Project Development Rules

This Skill provides comprehensive development rules and guidelines for Cursor project development, including worktree-aware Docker development, coding standards, API design, frontend development, testing strategies, and Docker best practices.

Quick Start

To access specific development rules:

# View coding standards
cat rules/coding-standards.md

# View API guidelines
cat rules/api-guidelines.md

# View frontend guidelines
cat rules/frontend-guidelines.md

# View testing guidelines
cat rules/testing-guidelines.md

# View Docker development rules
cat rules/docker-development.md

# Get project information
python scripts/helper.py info

Available Rules

• coding-standards.md: Coding conventions and style guides for TypeScript, Python, and general development
• api-guidelines.md: FastAPI API design guidelines and best practices
• frontend-guidelines.md: Next.js frontend development guidelines with TypeScript and Tailwind CSS
• testing-guidelines.md: Testing strategy and implementation guidelines for unit, integration, and E2E tests
• docker-development.md: Docker development environment rules and worktree integration

Project Overview

This is a worktree-aware Docker scaffold with Next.js + FastAPI + PostgreSQL + Playwright E2E that enables parallel development across multiple git worktrees without port/container/network/volume/database name conflicts.

Key Features

• Worktree Support: Simultaneous development on multiple branches
• Docker Development: Consistent containerized development environment
• Automatic Environment: Git hooks for automatic .env generation
• Complete Isolation: Each worktree has independent environment
• Port Management: Automatic port allocation (3000+Δ, 8000+Δ, 5400+Δ)
• Database Isolation: Worktree-specific database names (app_)
• Volume Isolation: Worktree-specific Docker volumes
• Network Isolation: Worktree-specific Docker networks

Development Commands

# Environment management
python tool-scripts/devctl.py env-gen --write-root
python tool-scripts/devctl.py up
python tool-scripts/devctl.py down

# Testing
python tool-scripts/devctl.py test js      # Frontend unit tests
python tool-scripts/devctl.py test py      # Backend unit tests
python tool-scripts/devctl.py test ui      # Playwright E2E
python tool-scripts/devctl.py test api     # API E2E tests
python tool-scripts/devctl.py test all    # All tests

# Database
python tool-scripts/devctl.py migrate upgrade
python tool-scripts/devctl.py migrate downgrade base

# Worktree management
git worktree add ../wt-feature feature/my-branch
git worktree remove wt-feature

Architecture

• Frontend: Next.js 14 with TypeScript, Tailwind CSS, Vitest, Playwright
• Backend: FastAPI with Python 3.11, SQLAlchemy, Alembic, pytest
• Database: PostgreSQL with worktree-specific databases
• Testing: Vitest (unit), Playwright (UI E2E), httpx (API E2E)
• Development: Docker Compose with worktree isolation