diff --git a/auto-setup.ps1 b/auto-setup.ps1
index 66e83c1..bf0a926 100644
--- a/auto-setup.ps1
+++ b/auto-setup.ps1
@@ -16,7 +16,7 @@ param(
 $ErrorActionPreference = "Stop"
 
 # ─── 版本号 (每次更新递增, build.ps1 自动读取) ──────
-$BWVersion = "2.0.1"
+$BWVersion = "2.0.2"
 
 # ─── B4: 单实例保护 (防止双击两次导致竞态) ─────────
 $mutexCreated = $false
@@ -1104,27 +1104,35 @@ if (Test-Path $templateFile) {
 
     # ── ~/.claude.json (Claude Code v2.1+ MCP 服务器配置的正确位置) ──
     # Claude Code 不再从 settings.json 读取 mcpServers, 必须写入 ~/.claude.json
+    # 用 Node.js 做 JSON 合并 (避免 PowerShell ConvertTo-Json 深度/类型陷阱)
     $claudeJsonFile = Join-Path $env:USERPROFILE ".claude.json"
+    $mcpTmpFile = Join-Path $env:TEMP "bw-mcp-servers.json"
     try {
+        # 从渲染后的 settings.json 提取 mcpServers 写入临时文件
         $settingsObj = ConvertFrom-Json $content
         if ($settingsObj.mcpServers) {
-            $mcpOnly = @{ mcpServers = $settingsObj.mcpServers }
-            # 如果已有 .claude.json, 合并 mcpServers (保留用户自定义项)
-            if (Test-Path $claudeJsonFile) {
-                try {
-                    $existing = Get-Content $claudeJsonFile -Raw -ErrorAction SilentlyContinue | ConvertFrom-Json
-                    if ($existing.mcpServers) {
-                        # 以模板为基础, 保留用户新增的 server
-                        $merged = @{}
-                        foreach ($prop in $existing.mcpServers.PSObject.Properties) { $merged[$prop.Name] = $prop.Value }
-                        foreach ($prop in $settingsObj.mcpServers.PSObject.Properties) { $merged[$prop.Name] = $prop.Value }
-                        $mcpOnly.mcpServers = [PSCustomObject]$merged
-                    }
-                } catch { <# 解析失败则覆盖 #> }
+            # 过滤掉 __comment 键
+            $cleanMcp = @{}
+            foreach ($prop in $settingsObj.mcpServers.PSObject.Properties) {
+                if ($prop.Name -notlike '__*') { $cleanMcp[$prop.Name] = $prop.Value }
             }
-            $mcpJson = $mcpOnly | ConvertTo-Json -Depth 10
-            Set-Content $claudeJsonFile -Value $mcpJson -Encoding UTF8
-            $mcpCount = ($settingsObj.mcpServers.PSObject.Properties | Where-Object { $_.Name -notlike '__*' }).Count
+            [PSCustomObject]$cleanMcp | ConvertTo-Json -Depth 10 | Set-Content $mcpTmpFile -Encoding UTF8
+
+            # Node.js 安全合并: 保留 .claude.json 所有现有字段, 只注入 mcpServers
+            $mergeJs = @'
+const fs=require("fs");
+const target=process.argv[2], src=process.argv[3];
+let data={};
+try{data=JSON.parse(fs.readFileSync(target,"utf8"))}catch(e){}
+const mcp=JSON.parse(fs.readFileSync(src,"utf8"));
+data.mcpServers=mcp;
+fs.writeFileSync(target,JSON.stringify(data,null,2),"utf8");
+const n=Object.keys(mcp).length;
+console.log(n);
+'@
+            $nodeOut = & node -e $mergeJs -- $claudeJsonFile $mcpTmpFile 2>&1
+            $mcpCount = ($nodeOut | Select-Object -First 1).ToString().Trim()
+            Remove-Item $mcpTmpFile -Force -ErrorAction SilentlyContinue
             Log-OK ".claude.json 已写入 ($mcpCount 个 MCP 服务器)"
         }
     } catch {