Add UI/UX Pro Max skill for Claude Code

[criptogus]

Installs the ui-ux-pro-max skill (design intelligence: UI styles, color palettes, typography, UX guidelines) into .claude/skills/.

https://claude.ai/code/session_01MwTPUbUe6aPJuLE3QPnPRn

What does this PR add?

Type

• New package (skill / playbook / soul / guardrail)
• Improvement to an existing package (bumped version)
• Platform code or docs

Checklist (for content PRs)

• Filename matches slug and the type's folder
• At least 2 worked examples (skills) — realistic input + exact expected output
• Original work, public-domain, or properly attributed; no secrets / PII
• bun run validate:content passes locally
• I've read CONTRIBUTING.md and agree to license under Apache-2.0 (code) / CC-BY-SA-4.0 (content)

Notes for reviewers