--- title: Reference lastUpdated: 2026-04-15 --- # Reference | Reference | What it covers | |---|---| | [Architecture](./architecture.md) | Binary-first runtime, Claude MCP integration, personas, and provider direction | | [State](./state.md) | What exists today, what is missing, and what changed in the product contract | | [Testing](./testing.md) | Test strategy, commands, and repo-specific conventions | | [API Reference](../api/index.md) | Generated Go package documentation from `cmd/` and `internal/` | | [Rewrite PRD](../plans/2026-04-14-radioactive-ralph-rewrite.prq.md) | The product-plan document that explains the rewrite goals and milestones | ```{toctree} :hidden: architecture state testing ```