test: add Claude plugin contract verification suite
18 tests validate the full plugin contract before tagging:
- Marketplace: valid JSON, required fields, unique names, versions
- Plugins: directory exists, manifest present, version consistency
- Commands: .md format, YAML frontmatter with name:
- Hooks: valid events, scripts exist + executable
- Scripts: executable, shebangs present
- Skills: SKILL.md present, scripts executable
- Cross-refs: all claude/ dirs listed in marketplace
fix: chmod +x on 8 skill scripts caught by contract tests
Co-Authored-By: Virgil <virgil@lethean.io>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
5e0a18a110