Add origin field to all skill files to track their source repository.
This enables users to identify where distributed skills originated from.
Fixesaffaan-m/everything-claude-code#246
- New skills: api-design, database-migrations, deployment-patterns
- validate-hooks.js: validate inline JS syntax in node -e hook commands
- utils.test.js: edge case tests for findFiles with null/undefined inputs
- README: update skill count to 35, add new skills to directory tree