den

Work on the Rust-canonical den CLI and MCP server for provisioning, deployment, lifecycle, and custom-domain flows across Sprite, Railway, Cloudflare, and sesame/Porkbun. Use when changing `den` commands, `den-mcp` workflows, runtime or domain provider dispatch, the self-hosted runtime design, or tests and docs that describe the Rust CLI and MCP behavior.

Maintain den when provisioning and lifecycle flows use the Sprite CLI on Fly and custom domains are managed through sesame on Porkbun. Use when changing Sprite-backed `den` workflows, custom-domain forwarding, provider-specific docs, or tests that depend on Sprite URLs and Porkbun forwarding behavior.