- Route-derived SiteBreadcrumb below the MOTD on all non-index
pages; separator icon switched to bxs:chevron-right-square
- GlobalDropZone moved to the layout so it works on every page;
on thread routes it only applies to the upper half of the
viewport (comment attachments keep their own zone)
- MOTD banner is now sticky below the site header
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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
FliesentischKingandDevin
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