Replace markdown editor with native Tiptap editor and add Home navigation

- Migrate renderer from md-editor/md-format to a Tiptap-based native editor
  (native-doc pipeline: native-doc, markdown-to-native, native-to-markdown,
  native-assembly, migration, backup)
- Use pointer-event-based chapter reordering with grab/grabbing cursors to
  avoid the Wayland prohibited-drop cursor while preserving reordering
- Add a persistent Home button that closes the open book and returns to the
  Folio library/welcome screen
- Update app icons, package deps, theme styles, and tests
This commit is contained in:
avi 2026-08-20 11:12:17 -05:00
commit 786a65ae2a
48 changed files with 5762 additions and 3999 deletions

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