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

install-windows-en.ps1

@@ -186,12 +186,27 @@ if (Get-Command git -ErrorAction SilentlyContinue) {
 
 # ─────────────────────────────────────────────
 # Step 3: Install / Update OpenClaw
+# China-first path: npmmirror → npmjs (if needed)
 # ─────────────────────────────────────────────
 Write-Info "Installing / updating OpenClaw..."
 
-npm install -g openclaw@latest 2>&1 | Write-Host
-if ($LASTEXITCODE -ne 0) {
-    Write-Err "OpenClaw installation failed. Please run manually: npm install -g openclaw@latest"
+function Install-OpenClawByRegistry($registry) {
+    Write-Info "Trying npm install via $registry ..."
+    npm install -g openclaw@latest --registry=$registry 2>&1 | Write-Host
+    return ($LASTEXITCODE -eq 0)
+}
+
+$installedOpenClaw = $false
+if (Install-OpenClawByRegistry "https://registry.npmmirror.com") {
+    Write-Ok "OpenClaw installed / updated via npmmirror."
+    $installedOpenClaw = $true
+} elseif (Install-OpenClawByRegistry "https://registry.npmjs.org") {
+    Write-Ok "OpenClaw installed / updated via npm registry."
+    $installedOpenClaw = $true
+}
+
+if (-not $installedOpenClaw) {
+    Write-Err "OpenClaw installation failed: both npmmirror and npm registry are unavailable."
 }
 
 # Refresh PATH