//! `cph-typst` — typst `World`, driver generation, compile, PDF, span mapping.
//!
//! Owned by **WU-4**. Builds the typst compiler `World` over the engineering
//! file's virtual file system (ADR-0006/0007), generates the driver entrypoint
//! from the manifest, compiles to PDF, and maps typst spans back to source
//! locations for diagnostics.

// WU-4: implement the World + driver-gen + compile + span mapping. Empty for
// now so the workspace compiles.