Both were selectable in the dialog and changed nothing — they only rode the
file formats, so an imported document numbered and placed its notes wrong.
noteLabels now counts within a bucket (class, chapter, or the page pageBreaks
publishes through setNoteAnchorPages); a collected footnote leaves position:
absolute and opens its own page, as LibreOffice does. Counting and position
move to the footnote tab, the only place LibreOffice offers them.
The separator's own alignment moves the line alone — probed, notes stay left.
The placements key watched each note's top but not its doc position, so an
edit that shifted the note section without moving a note left the decoration
set naming stale positions — ProseMirror dropped it and every footnote fell
back to its static spot, stacked on top of the next one. The position now
rides the key, resolved once beside the top.
The marker moves from a CSS ::before to a widget decoration: generated
content is no text node, so it reached neither the PDF nor a measurement.
The note also carries the paragraph style its file names, so font, size and
colour are the document's; only the hanging indent stays the editor's,
because the style model has no first-line half to pair with the margin.
Adds a unit test for the numbering and the settings, plus the architecture
doc and the two open parity findings.
Steffen Becker