Legacy Modernization
Rules for incrementally upgrading legacy systems: strangler patterns, compatibility-safe refactors, and test scaffolding before major changes.
Top Rules to Start With
- React Cursor Rules — cursor · react
- Next.js Cursor Rules — cursor · nextjs
- Data Pipeline & ETL Rules for Aider — aider · python
- Data Pipeline & ETL Rules for Claude Code — claude-code · python
- Data Pipeline & ETL Rules for Cline — cline · python
- Data Pipeline & ETL Rules for Continue — continue · python
- Data Pipeline & ETL Rules for Cursor — cursor · python
- Data Pipeline & ETL Rules for GitHub Copilot — copilot · python
78 quality-ranked rules
All collections →Docker Compose Performance Rules for Continue
SEO-ready Continue rules for Docker Compose performance with copy-paste instructions, testing guardrails, and production-safe patterns.
Echo Performance Rules for Aider
SEO-ready Aider rules for Echo performance with copy-paste instructions, testing guardrails, and production-safe patterns.
Echo Performance Rules for Claude Code
SEO-ready Claude Code rules for Echo performance with copy-paste instructions, testing guardrails, and production-safe patterns.
Ecto Performance Rules for Aider
SEO-ready Aider rules for Ecto performance with copy-paste instructions, testing guardrails, and production-safe patterns.
Ecto Performance Rules for Claude Code
SEO-ready Claude Code rules for Ecto performance with copy-paste instructions, testing guardrails, and production-safe patterns.
Ecto Performance Rules for Cline
SEO-ready Cline rules for Ecto performance with copy-paste instructions, testing guardrails, and production-safe patterns.