docs: document install script usage in all language READMEs

- Add installation instructions for using an install script in English, Simplified Chinese, and Traditional Chinese READMEs
- Update documentation outlines to include the new install script section in all languages
- Explain install script steps: automatic OS/architecture detection, downloading the latest binary, and adding it to PATH

Signed-off-by: appleboy <[email protected]>

Author: appleboy

README.md

@@ -16,6 +16,7 @@ English | [繁體中文](./README.zh-tw.md) | [简体中文](./README.zh-cn.md)
   - [Installation](#installation)
     - [macOS](#macos)
     - [Windows](#windows)
+    - [Using install script](#using-install-script)
     - [Pre-compiled Binaries](#pre-compiled-binaries)
     - [From Source](#from-source)
     - [Using vscode devcontainer](#using-vscode-devcontainer)
@@ -82,6 +83,26 @@ Install via [Chocolatey](https://chocolatey.org/install):
 choco install codegpt
 ```
 
+### Using install script
+
+```sh
+# Download and run the install script
+curl -sSL https://raw.githubusercontent.com/appleboy/CodeGPT/main/install.sh | bash
+```
+
+Or download and run manually:
+
+```sh
+chmod +x install.sh
+./install.sh
+```
+
+The script will:
+
+1. Detect your OS and architecture
+2. Download the latest binary
+3. Add the binary to your PATH
+
 ### Pre-compiled Binaries
 
 Download the pre-compiled binaries from the [release page](https://github.com/appleboy/CodeGPT/releases). Change the binary permissions to `755` and copy the binary to the system bin directory. Use the `codegpt` command as shown below:

README.zh-cn.md

@@ -14,6 +14,7 @@
   - [目录](#目录)
   - [功能](#功能)
   - [安装](#安装)
+    - [使用安装脚本](#使用安装脚本)
     - [从源码安装](#从源码安装)
     - [使用 VSCode Devcontainer](#使用-vscode-devcontainer)
   - [配置](#配置)
@@ -71,6 +72,26 @@ brew install codegpt
 choco install codegpt
 ```
 
+### 使用安装脚本
+
+```sh
+# 下载并执行安装脚本
+curl -sSL https://raw.githubusercontent.com/appleboy/CodeGPT/main/install.sh | bash
+```
+
+或手动下载后执行：
+
+```sh
+chmod +x install.sh
+./install.sh
+```
+
+该脚本会自动：
+
+1. 检测您的操作系统和架构
+2. 下载最新版二进制文件
+3. 将程序加入 PATH
+
 可以从 [发布页面](https://github.com/appleboy/CodeGPT/releases) 下载预编译的二进制文件。将二进制文件权限更改为 `755` 并将其复制到系统 bin 目录。使用如下所示的 `codegpt` 命令。
 
 ```sh

README.zh-tw.md

@@ -16,6 +16,7 @@
   - [安裝](#安裝)
     - [macOS](#macos)
     - [Windows](#windows)
+    - [使用安裝腳本](#使用安裝腳本)
     - [預編譯二進制文件](#預編譯二進制文件)
     - [從源碼安裝](#從源碼安裝)
     - [使用 VSCode Devcontainer](#使用-vscode-devcontainer)
@@ -82,6 +83,26 @@ brew install codegpt
 choco install codegpt
 ```
 
+### 使用安裝腳本
+
+```sh
+# 下載並執行安裝腳本
+curl -sSL https://raw.githubusercontent.com/appleboy/CodeGPT/main/install.sh | bash
+```
+
+或手動下載後執行：
+
+```sh
+chmod +x install.sh
+./install.sh
+```
+
+此腳本會自動：
+
+1. 偵測您的作業系統與架構
+2. 下載最新版二進位檔案
+3. 將程式加入 PATH
+
 ### 預編譯二進制文件
 
 從 [release 頁面](https://github.com/appleboy/CodeGPT/releases) 下載預編譯的二進制文件。將二進制文件的權限更改為 `755`，並將二進制文件複製到系統 bin 目錄。使用如下所示的 `codegpt` 命令：