Summary

• Remove brackets from footnote/endnote reference numbers ([2] → 2)
• Put <sup> inside anchor tag like LibreOffice does for clean inline rendering
• Skip span wrapper for runs containing only footnote/endnote references to prevent whitespace issues
• Move backref arrow (↩) inside last paragraph to prevent line breaks
• Skip runs containing only w:footnoteRef/w:endnoteRef placeholder elements

Before/After Comparison

Before (Docxodus):

<span class="pt-FootnoteReference">
  <sup>
    <a href="#footnote-2">[2]</a>
  </sup>
</span>

After (Docxodus):

<a href="#footnote-2" class="footnote-ref"><sup>2</sup></a>

LibreOffice (target):

<a class="sdfootnoteanc" href="#sdfootnote2sym"><sup>2</sup></a>

Test plan

• All 1174 tests pass
• Visual comparison with LibreOffice HTML output
• Verified footnotes section renders correctly
• Verified backref arrows appear inline with footnote text