Update README.md

Update README.md

Update README.md

Update README.md

Update README.md

Add Vibe Coding Playbook content to README

Add multi-agent orchestration workflow definition

Implement quality-first verification loops

Initialize AI-optimized development environment setup

Add XML Prompting Mastery Guide

Add universal planning template and validation framework

Add step 3 for context management implementation

Implement advanced context management system

Create scalability planning document

Create refactoring strategy document