fix: add Windows compatibility for zip extraction and file copy

- Use PowerShell Expand-Archive on Windows instead of unzip
- Use xcopy on Windows instead of cp -r in shell fallback
- Bump version to 1.0.3

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "uipro-cli",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "CLI to install UI/UX Pro Max skill for AI coding assistants",
   "type": "module",
   "bin": {