fix: Windows scripts check Node.js version, use winget OpenJS.NodeJS.V24

BAT and PS1 now detect if installed Node is < v24 and suggest/install
the correct v24 package instead of LTS (v22).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

claude/uclaude_update.bat

@@ -31,9 +31,17 @@ if errorlevel 1 (
 
 where node >nul 2>&1
 if errorlevel 1 (
-    echo WARNING: Node.js not found. Updater will attempt to guide you.
-    echo Install: winget install OpenJS.NodeJS
+    echo WARNING: Node.js not found.
+    echo Install: winget install OpenJS.NodeJS.V24
     echo    or: https://nodejs.org/
+) else (
+    for /f "tokens=1 delims=." %%A in ('node -v') do set "NODE_MAJOR=%%A"
+    set "NODE_MAJOR=!NODE_MAJOR:v=!"
+    if !NODE_MAJOR! LSS 24 (
+        echo WARNING: Node.js v!NODE_MAJOR! found, need v24+
+        echo Upgrade: winget install OpenJS.NodeJS.V24
+        echo    or: https://nodejs.org/
+    )
 )
 
 REM ---- Pull latest artifacts ----

claude/uclaude_update.ps1

@@ -42,11 +42,22 @@ if (-not $hasPython) {
     }
 }
 
-# Node.js
-if (-not (Test-Command "node")) {
+# Node.js v24+
+$nodeOk = $false
+if (Test-Command "node") {
+    $nodeVer = (node --version) -replace '^v', ''
+    $nodeMajor = [int]($nodeVer -split '\.')[0]
+    if ($nodeMajor -ge 24) {
+        $nodeOk = $true
+    } else {
+        Write-Host "  Node.js v$nodeVer found, need v24+. Upgrading..." -ForegroundColor Yellow
+    }
+} else {
     Write-Host "  Node.js not found." -ForegroundColor Yellow
-    if (-not (Install-WithWinget "OpenJS.NodeJS" "Node.js")) {
-        Write-Host "  Install manually: https://nodejs.org/" -ForegroundColor Yellow
+}
+if (-not $nodeOk) {
+    if (-not (Install-WithWinget "OpenJS.NodeJS.V24" "Node.js v24")) {
+        Write-Host "  Install Node.js v24+ manually: https://nodejs.org/" -ForegroundColor Yellow
     }
 }