* feat: audit fixes and documentation improvements
- Refactored model selection to drop legacy fallback and add warning
- Improved heartbeat content validation
- Added Skill Creation guide
- Updated CONTRIBUTING.md with roadmap
* style: fix formatting in model-selection.ts
* style: fix formatting and improve model selection logic with tests
- List maintainers with GitHub/X links
- Link to Discord and GitHub Discussions
- AI/vibe-coded PRs welcome with transparency guidelines
- Link from README
Co-authored-by: Clawd <clawdbot@gmail.com>