The Comments panel was sparse: 12px inner/outer paddings per thread, a
16px gap between avatar and body, body text at the global 16px ProseMirror
size. On a narrow aside column this ate vertical space - few comments per
screen, lots of air.
Tighten strictly inside features/comment (the shared aside frame is left
untouched, so TOC/Details tabs keep their padding):
- Thread Paper: p='sm'->p='xs', mb='sm'->mb='xs' (12->10px).
- Reply-editor Divider: my={4}->my={2}.
- CommentListItem outer Box: pb='xs'->pb={6}; the header Group
(avatar + body) gains gap='xs' (16->10px).
- Font hierarchy: author name sm->xs (14->12px, fw=500 kept), selection
quote sm->xs; comment body via a scoped CSS override on
.commentEditor .ProseMirror: font-size sm (14px) + line-height 1.4,
margin-top 10->4. The page editor is unaffected (the override is
scoped to the comment editor module).
- Selection quote padding 8->6, margin-top 4->2.
- Dropped the unused .wrapper rule (no references).
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