Add YAML frontmatter to SKILL.md for Context7 parsing

Author: jaschadub

SKILL.md

@@ -1,3 +1,9 @@
+---
+title: AgentPin
+description: Domain-anchored cryptographic identity protocol for AI agents — ES256 JWT credentials, 12-step verification, TOFU key pinning, revocation, delegation chains, and mutual authentication
+version: 0.2.0
+---
+
 # AgentPin Development Skills Guide
 
 **Purpose**: This guide helps AI assistants work with AgentPin for domain-anchored cryptographic agent identity verification.