Module transform 

KDL-node-tree → Zenith AST transform.

All fallible helpers return Result<_, ParseError> so no .unwrap() or .expect() appears anywhere in this module tree.

Wiring only: submodules carry the logic, grouped by node cohesion.

• helpers: shared span/value-extraction helpers.
• document: the top-level transform entry plus the document-level structural blocks (project/assets/libraries/…/pages).
• tokens: the tokens { … } and styles { … } blocks.
• node: the per-node-kind dispatch edge (node::transform_node).
• page: page { … } block transform and PAGE_KNOWN_PROPS.
• pattern: pattern node transform.
• chart: chart node transform.
• leaf/container/special: the renderable node transforms.

Functions

transform

Transform a parsed KdlDocument into a Zenith Document AST.