refactor(quick-dev): eliminate spec-wip.md singleton

Write directly to spec-{slug}.md with status: draft instead of using
a shared spec-wip.md file. Use draft status for resume detection in
step-01. Removes wipFile variable from all step frontmatter and
workflow initialization.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

README.md

@@ -3,8 +3,6 @@
 [![Version](https://img.shields.io/npm/v/bmad-method?color=blue&label=version)](https://www.npmjs.com/package/bmad-method)
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](LICENSE)
 [![Node.js Version](https://img.shields.io/badge/node-%3E%3D20.0.0-brightgreen)](https://nodejs.org)
-[![Python Version](https://img.shields.io/badge/python-%3E%3D3.10-blue?logo=python&logoColor=white)](https://www.python.org)
-[![uv](https://img.shields.io/badge/uv-package%20manager-blueviolet?logo=uv)](https://docs.astral.sh/uv/)
 [![Discord](https://img.shields.io/badge/Discord-Join%20Community-7289da?logo=discord&logoColor=white)](https://discord.gg/gk8jAdXWmj)
 
 **Build More Architect Dreams** — An AI-driven agile development module for the BMad Method Module Ecosystem, the best and most comprehensive Agile AI Driven Development framework that has true scale-adaptive intelligence that adjusts from bug fixes to enterprise systems.
@@ -36,7 +34,7 @@ Traditional AI tools do the thinking for you, producing average results. BMad ag
 
 ## Quick Start
 
-**Prerequisites**: [Node.js](https://nodejs.org) v20+ · [Python](https://www.python.org) 3.10+ · [uv](https://docs.astral.sh/uv/)
+**Prerequisites**: [Node.js](https://nodejs.org) v20+
 
 ```bash
 npx bmad-method install