SkillCategory:
| "file-operations"
| "code-generation"
| "code-analysis"
| "testing"
| "documentation"
| "refactoring"
| "debugging"
| "deployment"
| "general"
| "coding-standards"
| "security"
| "database"
| "cloud-native"
| "devops"
| "api"
| "frontend"
| "observability"
| "compliance"
Skill categories for organization.
Extended in Epic #643 to support standards absorption categories.