feat: add Kiro support

- Add .kiro/steering/ui-ux-pro-max.md with inclusion: manual frontmatter
- Add CLI support for --ai kiro option
- Update README and CLAUDE.md with Kiro docs
- Bump CLI version to 1.3.0

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "uipro-cli",
-  "version": "1.2.0",
+  "version": "1.3.0",
   "description": "CLI to install UI/UX Pro Max skill for AI coding assistants",
   "type": "module",
   "bin": {
@@ -23,6 +23,7 @@
     "cursor",
     "windsurf",
     "copilot",
+    "kiro",
     "ai",
     "skill"
   ],