The TipTap node definitions imported their node-name constants from
schema.ts, while schema.ts imported the nodes to build the schema. This
circular dependency evaluated the nodes before the constants were
assigned, leaving sceneBreak/footnote/footnoteArea/characterMention with
name 'undefined' — so they never registered in PubScriptSchema. As a
result <hr class="scene-break"> parsed as StarterKit's horizontalRule
instead of a scene break.
- Move node-name constants, groups, MentionAttrs, and colorAttribute into
a new constants.ts module that both schema.ts and the node files import
from, breaking the cycle.
- Remove the redundant separate History extension (already in StarterKit),
which also silenced a TipTap 'Duplicate extension names: undoRedo' warn.
- Drop unused TipTap extension and prosemirror-* deps (all access goes
through @tiptap/pm).
Schwitzz