docs: add Augment to runtime list in all README files

- Update main README and 4 translated versions
- Add Augment verification command (/gsd-help)
- Fix runtime list ordering (Windsurf before Antigravity)

README.ja-JP.md

@@ -4,7 +4,7 @@
 
 [English](README.md) · [Português](README.pt-BR.md) · [简体中文](README.zh-CN.md) · **日本語**
 
-**Claude Code、OpenCode、Gemini CLI、Codex、Copilot、Antigravity向けの軽量かつ強力なメタプロンプティング、コンテキストエンジニアリング、仕様駆動開発システム。**
+**Claude Code、OpenCode、Gemini CLI、Codex、Copilot、Cursor、Windsurf、Antigravity、Augment向けの軽量かつ強力なメタプロンプティング、コンテキストエンジニアリング、仕様駆動開発システム。**
 
 **コンテキストロット（Claudeがコンテキストウィンドウを消費するにつれ品質が劣化する現象）を解決します。**
 

README.ko-KR.md

@@ -4,7 +4,7 @@
 
 [English](README.md) · [Português](README.pt-BR.md) · [简体中文](README.zh-CN.md) · [日本語](README.ja-JP.md) · **한국어**
 
-**Claude Code, OpenCode, Gemini CLI, Codex, Copilot, Cursor, Antigravity를 위한 가볍고 강력한 메타 프롬프팅, 컨텍스트 엔지니어링, 스펙 기반 개발 시스템.**
+**Claude Code, OpenCode, Gemini CLI, Codex, Copilot, Cursor, Windsurf, Antigravity, Augment를 위한 가볍고 강력한 메타 프롬프팅, 컨텍스트 엔지니어링, 스펙 기반 개발 시스템.**
 
 **컨텍스트 rot를 해결합니다 — Claude의 컨텍스트 창이 채워질수록 품질이 저하되는 문제.**
 

README.md

@@ -4,7 +4,7 @@
 
 **English** · [Português](README.pt-BR.md) · [简体中文](README.zh-CN.md) · [日本語](README.ja-JP.md) · [한국어](README.ko-KR.md)
 
-**A light-weight and powerful meta-prompting, context engineering and spec-driven development system for Claude Code, OpenCode, Gemini CLI, Codex, Copilot, Cursor, Windsurf, and Antigravity.**
+**A light-weight and powerful meta-prompting, context engineering and spec-driven development system for Claude Code, OpenCode, Gemini CLI, Codex, Copilot, Cursor, Windsurf, Antigravity, and Augment.**
 
 **Solves context rot — the quality degradation that happens as Claude fills its context window.**
 
@@ -82,15 +82,14 @@ npx get-shit-done-cc@latest
 ```
 
 The installer prompts you to choose:
-1. **Runtime** — Claude Code, OpenCode, Gemini, Codex, Copilot, Cursor, Windsurf, Antigravity, or all (interactive multi-select — pick multiple runtimes in a single install session)
+1. **Runtime** — Claude Code, OpenCode, Gemini, Codex, Copilot, Cursor, Windsurf, Antigravity, Augment, or all (interactive multi-select — pick multiple runtimes in a single install session)
 2. **Location** — Global (all projects) or local (current project only)
 
 Verify with:
-- Claude Code / Gemini: `/gsd:help`
+- Claude Code / Gemini / Copilot / Antigravity: `/gsd:help`
 - OpenCode: `/gsd-help`
 - Codex: `$gsd-help`
-- Copilot: `/gsd:help`
+- Augment: `/gsd-help`
-- Antigravity: `/gsd:help`
 
 > [!NOTE]
 > Codex installation uses skills (`skills/gsd-*/SKILL.md`) rather than custom prompts.

README.pt-BR.md

@@ -4,7 +4,7 @@
 
 [English](README.md) · **Português** · [简体中文](README.zh-CN.md) · [日本語](README.ja-JP.md)
 
-**Um sistema leve e poderoso de meta-prompting, engenharia de contexto e desenvolvimento orientado a especificação para Claude Code, OpenCode, Gemini CLI, Codex, Copilot, Cursor e Antigravity.**
+**Um sistema leve e poderoso de meta-prompting, engenharia de contexto e desenvolvimento orientado a especificação para Claude Code, OpenCode, Gemini CLI, Codex, Copilot, Cursor, Windsurf, Antigravity e Augment.**
 
 **Resolve context rot — a degradação de qualidade que acontece conforme o Claude enche a janela de contexto.**
 

docs/zh-CN/README.md

@@ -2,7 +2,7 @@
 
 # GET SHIT DONE
 
-**一个轻量级且强大的元提示、上下文工程和规格驱动开发系统，支持 Claude Code、OpenCode、Gemini CLI 和 Codex。**
+**一个轻量级且强大的元提示、上下文工程和规格驱动开发系统，支持 Claude Code、OpenCode、Gemini CLI、Codex、Copilot、Cursor、Windsurf、Antigravity 和 Augment。**
 
 **解决上下文衰减 —— 即 Claude 填充上下文窗口时发生的质量退化问题。**