Replaces hardcoded paddings in the three layouts that share the
standard 16dp/14dp list-row pattern (item_account, item_card,
item_more_nav) with @dimen/list_item_padding_h / list_item_padding_v.
Dashboard root content padding becomes @dimen/screen_margin. Card
content paddings inside the dashboard are left as raw 16dp — they're
a separate semantic (card-interior padding, not screen edge) and
will be addressed once we either need a distinct token or have a
reason to change them.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>