Function node_supports_transform 

pub fn node_supports_transform(kind: &NodeKind) -> bool

Single source of truth for which props a node kind honors at render, keyed by section (not path string): one match instead of three parallel tables. prop_mut/prop_ref consult this, so unsupported edits fail loudly instead of writing dead values. Keep the arms in sync with eval_group/emit_style/apply_modifier.