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Validation and Semantics

Validation enforces a structural whitelist and attribute bounds over the parsed AST. Unknown components/attributes are errors at validation time. Examples:

  • Structural: grid(cols=1..6, gap=0..64), section(title), card(title)
  • Artifacts:
    • artifact.json(id, collapsed?, depth=0..8, json_pointer?)
    • artifact.table(id, caption?, columns?, kind?)
    • artifact.image(id, alt, max_height=128..2048, caption?)
    • artifact.text(id, max_lines=1..500, caption?)
  • Advisory schema hints for artifact.table.kind map to filenames (see schemas chapter).
  • Errors are structured with codes: UnknownComponent, UnknownAttribute, MissingAttribute, AttrType, AttrBound, DepthExceeded, NodeLimit.