feat: china-first openclaw install (npmmirror fallback to npmjs)

install-windows.ps1

@@ -187,12 +187,27 @@ if (Get-Command git -ErrorAction SilentlyContinue) {
 
 # ─────────────────────────────────────────────
 # 步骤 3: 安装 / 更新 OpenClaw
+# 国内网络优先：npmmirror → npmjs（必要时）
 # ─────────────────────────────────────────────
 Write-Info "正在安装 / 更新 OpenClaw..."
 
-npm install -g openclaw@latest 2>&1 | Write-Host
-if ($LASTEXITCODE -ne 0) {
-    Write-Err "OpenClaw 安装失败。请手动运行：npm install -g openclaw@latest"
+function Install-OpenClawByRegistry($registry) {
+    Write-Info "尝试通过 npm 安装 OpenClaw（$registry）..."
+    npm install -g openclaw@latest --registry=$registry 2>&1 | Write-Host
+    return ($LASTEXITCODE -eq 0)
+}
+
+$installedOpenClaw = $false
+if (Install-OpenClawByRegistry "https://registry.npmmirror.com") {
+    Write-Ok "已通过 npmmirror 安装 / 更新 OpenClaw。"
+    $installedOpenClaw = $true
+} elseif (Install-OpenClawByRegistry "https://registry.npmjs.org") {
+    Write-Ok "已通过 npm 官方源安装 / 更新 OpenClaw。"
+    $installedOpenClaw = $true
+}
+
+if (-not $installedOpenClaw) {
+    Write-Err "OpenClaw 安装失败：npmmirror 与 npm 官方源均不可用。"
 }
 
 # 刷新 PATH