Replace the text-based ASCII art representation of the system architecture with a linked Excalidraw SVG image. This improves visual clarity, readability, and maintainability of the architectural overview in the README.
- Repository now serves as InfraHub backend (schema + data in Git)
- Add data/ directory structure for infrastructure objects
- Add transforms/ for Jinja2 config templates
- Update architecture diagram to show Git-centric workflow
- Add "Repository as InfraHub Backend" section explaining benefits
- Simplify project structure to reflect new approach
- Align columns in README.md roadmap and technology stack tables
- Update CLI example to use 'uv run fabric-orch' command prefix
- Improve overall markdown table readability
- Update the dependency installation command in the main README to use `uv sync` instead of `pip`, reflecting the project's package manager.
- Realign markdown tables in `src/yang/README.md` to improve raw text readability and consistency.