Add new context files to assist with repository navigation and design
consistency:
- context/repo-map.md: A roadmap for the repository.
- context/design-principles.md: Guidelines for maintaining repository
consistency.
Update CLAUDE.md to include instructions on using the new context files.
Co-Authored-By: fiddlerwoaroof/git-smart-commit (unsloth/gemma-4-26B-A4B-it-GGUF:UD-Q5_K_XL)
