Module node 

Block-level and inline-level AST nodes.

Closed enums; pattern matching is the visitor framework. The variants cover what moss emits today (CommonMark + GFM extensions enabled in the pipeline: tables, strikethrough, footnotes — see src-tauri/src/build/markdown/pipeline.rs’s Options setup).

Anything pulldown-cmark emits that the AST hasn’t modeled flows through Block::Other / Inline::Other, which carries the raw HTML so the renderer passes it through unchanged. New variants may be promoted out of Other over time as a need is identified.

Enums

Block

A block-level AST node.

CalloutKind

Canonical callout kind. Obsidian-dialect aliases canonicalize via CalloutKind::from_raw (e.g. tldr/summary → CalloutKind::Abstract). Unknown kinds fall back to CalloutKind::Note; the parser logs at trace level (Diagnostic threading is a Phase 4 followup — see validation::Diagnostic, today scoped to frontmatter validation).

Fold

Foldable callout state. > [!type]+ → Fold::Open (foldable, open by default); > [!type]- → Fold::Closed (foldable, closed by default). Non-foldable callouts have fold: None on the containing Block::Callout.

Inline

An inline-level AST node.