- Add SkillInstallSpec type for future install mechanism support
- Add SkillRequirements type with bins, anyBins, env, config checks
- Add SkillConfig, SkillsConfig types for per-skill and global config
- Add utility functions: getSkillKey, getSkillConfig, normalizeRequirements
- Support both new (requires.bins, os) and legacy (requiresBinaries, platforms) fields
- Implement 'always' flag to skip eligibility checks
- Implement bundled skills allowlist filtering
- Implement config-based skill enable/disable
- Implement env var injection via config (apiKey + primaryEnv)
- Add listAllSkillsWithStatus() method to SkillManager
- Export new types and utility functions
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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