feat: make bullets into a to-do list and back

Make To-Do List, in the page context menu and the palette when the
selection holds bulleted or numbered paragraphs, removes their lists and
gives each the first check box tag in the tag list; Make Bulleted List
trades that tag back for the default bullet. Each is one undo step and
one revision. OneNote 2010 has no such command, and its Ctrl+1 keeps a
list beside the new To Do box (corpus/to-do-list/native).

Fixes #53.

Assisted-by: claude-opus-5.5
f3bfb4de18clover caruso committed on 10/2/2026, 9:01:11 AMparentf0c2aa5
42 files changedLine totals unavailable