Common Text Subtleties

DraftJS compatibility

app.common.text is legacy DraftJS conversion support. New text work should prefer the newer text type namespaces unless specifically touching DraftJS conversion.
DraftJS style values are encoded as Transit strings under PENPOT$$$<key>$$$<encoded> style names. PENPOT_SELECTION is a special marker.
Text conversion uses Unicode code points on both CLJ and CLJS paths, not UTF-16 code units. This matters for offsets around emoji and astral characters.
Draft conversion fixes gradient type strings back to keywords.

Modern text content schema is narrow: root -> paragraph-set -> paragraph -> text nodes.
position-data is derived layout/geometry/font fragment data and should be treated as generated state, not source-of-truth file data.
Token propagation and some non-current-page text updates drop :position-data so it can be regenerated in the right runtime context.