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>

README.md

@@ -36,6 +36,7 @@ uipro init --ai cursor      # Cursor
 uipro init --ai windsurf    # Windsurf
 uipro init --ai antigravity # Antigravity (.agent + .shared)
 uipro init --ai copilot     # GitHub Copilot
+uipro init --ai kiro        # Kiro
 uipro init --ai all         # All assistants
 ```
 
@@ -58,6 +59,7 @@ Copy the appropriate folders to your project:
 | Windsurf       | `.windsurf/workflows/ui-ux-pro-max.md` + `.shared/ui-ux-pro-max/`   |
 | Antigravity    | `.agent/workflows/ui-ux-pro-max.md` + `.shared/ui-ux-pro-max/`      |
 | GitHub Copilot | `.github/prompts/ui-ux-pro-max.prompt.md` + `.shared/ui-ux-pro-max/`|
+| Kiro           | `.kiro/steering/ui-ux-pro-max.md` + `.shared/ui-ux-pro-max/`        |
 
 ## Prerequisites
 
@@ -95,6 +97,14 @@ Use the slash command to invoke the skill:
 /ui-ux-pro-max Build a landing page for my SaaS product
 ```
 
+### Kiro
+
+Type `/` in chat to see available commands, then select `ui-ux-pro-max`:
+
+```
+/ui-ux-pro-max Build a landing page for my SaaS product
+```
+
 ### GitHub Copilot
 
 In VS Code with Copilot, type `/` in chat to see available prompts, then select `ui-ux-pro-max`: