Add SkillCheck validation badge (#42)

Your code-reviewer skill passed SkillCheck validation.

Validation: 46 checks passed, 1 warning (cosmetic), 3 suggestions.

Co-authored-by: Olga Safonova <olgasafonova@Olgas-MacBook-Pro.local>

Author: olgasafonova

README.md

@@ -7,6 +7,7 @@
 [![Claude Code](https://img.shields.io/badge/Claude-Code-purple.svg)](https://claude.ai/code)
 [![Multi-Agent Compatible](https://img.shields.io/badge/Multi--Agent-Compatible-green.svg)](https://github.com/skillcreatorai/Ai-Agent-Skills)
 [![48 Skills](https://img.shields.io/badge/Skills-48-brightgreen.svg)](#-available-skills)
+[![SkillCheck Validated](https://img.shields.io/badge/SkillCheck-Validated-4c1)](https://getskillcheck.com)
 
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