build(portable): 把 OPENCLAW_VERSION 拷进 portable/ 让 U盘用户能读版本 + Start.bat 转义修复

setup.bat/setup.sh 打包时把版本文件 copy 进 portable/,U盘用户脱离 repo 根
也能读到版本号。Windows-Start.bat 修 cmd.exe 把未转义 ) 当块结束的坑(加 ^ 转义)。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

portable/setup.sh

@@ -114,6 +114,8 @@ else
     OPENCLAW_VERSION="2026.4.29"
     if [ -f "$OPENCLAW_VERSION_FILE" ]; then
         OPENCLAW_VERSION="$(tr -d '[:space:]' < "$OPENCLAW_VERSION_FILE")"
+        # Copy version file into portable/ so USB users can read it without repo root
+        cp "$OPENCLAW_VERSION_FILE" "$(dirname "$0")/OPENCLAW_VERSION" 2>/dev/null || true
     fi
     if [ ! -f "$CORE_DIR/package.json" ]; then
         cat > "$CORE_DIR/package.json" << PKGJSON