fix: 修复 PowerShell 脚本中文乱码问题

- 在所有 .ps1 脚本中添加 UTF-8 编码兼容块
  (Console OutputEncoding/InputEncoding + chcp 65001)
- 兼容 Windows PowerShell 5.x, PS 7.x, Windows Terminal, conhost, ISE
- 添加 UTF-8 BOM 确保本地执行时编码正确识别
- try/catch 静默处理不支持 Console 类的环境

setup.ps1

@@ -1,4 +1,4 @@
-# XCodeCLI Setup Launcher (Windows)
+# XCodeCLI Setup Launcher (Windows)
 # 一站式安装和配置 Claude Code, Gemini CLI, Codex
 
 param(
@@ -9,6 +9,23 @@ param(
 # 支持一行命令传入 API Key: $key='xxx'; iwr ... | iex
 if (-not $ApiKey -and (Test-Path Variable:key)) { $ApiKey = $key }
 
+# ========== UTF-8 编码兼容 ==========
+# 确保中文字符在各种 PowerShell 环境中正确显示
+# 兼容: Windows PowerShell 5.x, PowerShell 7.x, Windows Terminal, conhost, ISE, iwr|iex
+try {
+    if ($Host.Name -eq 'ConsoleHost') {
+        [Console]::OutputEncoding = [System.Text.Encoding]::UTF8
+        [Console]::InputEncoding = [System.Text.Encoding]::UTF8
+    }
+    $OutputEncoding = [System.Text.Encoding]::UTF8
+    # Windows 下同步控制台代码页为 UTF-8
+    if ($env:OS -eq 'Windows_NT') {
+        & cmd /c "chcp 65001 >nul" 2>&1 | Out-Null
+    }
+} catch {
+    # 静默处理 - ISE 等环境可能不支持 Console 类操作
+}
+
 # ========== 颜色输出函数 ==========
 function Write-Info { param([string]$Message); Write-Host "[INFO]" -ForegroundColor Blue -NoNewline; Write-Host " $Message" }
 function Write-Success { param([string]$Message); Write-Host "[SUCCESS]" -ForegroundColor Green -NoNewline; Write-Host " $Message" }