Add Windows support and fix README links

- Add install.ps1 PowerShell script for Windows
- Add Windows installation instructions to README
- Fix raw.githubusercontent.com links (main -> master)
- Add PROMOTION.md to .gitignore and remove from tracking

Author: Bot

.gitignore

@@ -22,3 +22,6 @@ Thumbs.db
 # Local config
 .env
 .env.local
+
+# Promotion (not for public release)
+PROMOTION.md

PROMOTION.md

@@ -24,13 +24,13 @@
 
 ```bash
 # Project-level (current project)
-curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/main/install.sh | bash -s -- --project
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --project
 
 # User-level (all projects)
-curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/main/install.sh | bash -s -- --user
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --user
 
 # Update existing installation
-curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/main/install.sh | bash -s -- --update
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --update
 ```
 
 ---
@@ -151,7 +151,41 @@ curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/main/
 
 - [CodeBuddy IDE](https://copilot.tencent.com/ide/) installed
 - Git
-- Bash (Linux/macOS/Windows WSL)
+- Bash (Linux/macOS) or PowerShell (Windows)
+
+---
+
+## 💻 Windows Installation
+
+### Option 1: PowerShell (Recommended for Windows)
+
+```powershell
+# Download the installer
+Invoke-WebRequest -Uri "https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.ps1" -OutFile "install.ps1"
+
+# Project-level install
+.\install.ps1 -Type Project
+
+# User-level install (all projects)
+.\install.ps1 -Type User
+
+# Update existing installation
+.\install.ps1 -Type Update
+```
+
+### Option 2: Git Bash / WSL
+
+If you have Git Bash or WSL installed, you can use the Bash installer:
+
+```bash
+# Project-level
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --project
+
+# User-level
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --user
+```
+
+> **Note:** On Windows, CodeBuddy typically stores config at `%USERPROFILE%\.codebuddy`
 
 ---
 

README.md

@@ -24,13 +24,13 @@
 
 ```bash
 # 项目级（当前项目）
-curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/main/install.sh | bash -s -- --project
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --project
 
 # 用户级（所有项目）
-curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/main/install.sh | bash -s -- --user
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --user
 
 # 更新已安装版本
-curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/main/install.sh | bash -s -- --update
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --update
 ```
 
 ---
@@ -151,7 +151,41 @@ curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/main/
 
 - 已安装 [CodeBuddy IDE](https://copilot.tencent.com/ide/)
 - Git
-- Bash (Linux/macOS/Windows WSL)
+- Bash (Linux/macOS) 或 PowerShell (Windows)
+
+---
+
+## 💻 Windows 安装
+
+### 方式 1: PowerShell（推荐）
+
+```powershell
+# 下载安装脚本
+Invoke-WebRequest -Uri "https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.ps1" -OutFile "install.ps1"
+
+# 项目级安装
+.\install.ps1 -Type Project
+
+# 用户级安装（所有项目）
+.\install.ps1 -Type User
+
+# 更新已安装版本
+.\install.ps1 -Type Update
+```
+
+### 方式 2: Git Bash / WSL
+
+如果你安装了 Git Bash 或 WSL，可以使用 Bash 安装脚本：
+
+```bash
+# 项目级
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --project
+
+# 用户级
+curl -sSL https://raw.githubusercontent.com/1ncludeSteven/gstack-codebuddy/master/install.sh | bash -s -- --user
+```
+
+> **注意：** 在 Windows 上，CodeBuddy 通常将配置存储在 `%USERPROFILE%\.codebuddy`
 
 ---