# Guide Index
Purpose: Provide the entry point for operational guidance and runbooks.
Audience: Engineers and LLMs looking for procedures, setup steps, and debugging workflows.
## How to use this index
- Use this index for how-to steps, debugging, and operational procedures.
- Use `docs/spec/index.md` for contracts and required system behavior.
- Use `docs/governance.md` for documentation placement and update rules.
## Development
- `docs/guide/development/languages/index.md` — Language- and stack-specific development rules.
- `docs/guide/development/languages/rust.md` — Rust development and style rules for this repository.
## Testing and debugging
- No dedicated runbooks yet. Use `README.md` for the canonical test commands and workflow.