* fix(inbox): stop the onboarding card rendering twice below xl
The Dokumentinkorg workspace is a 3-pane master-detail grid that
collapses to a single stacked column below the xl breakpoint. With an
empty inbox the "Så funkar dokumentinkorgen" onboarding card rendered
in both the list pane (compact) and the main preview pane, because the
preview pane was never hidden when stacked. So on viewports under
1280px (narrow or split windows, smaller laptops) the same card showed
twice.
Hide the preview and fields panes below xl when the inbox is empty so
the list's compact card is the single onboarding surface. At xl+ the
3-pane layout is unchanged: quiet empty list plus one centered card.
Also align both loading skeletons (WorkspaceSkeleton and the
e/[sector]/[slug] route skeleton) to the same xl breakpoint; they
previously collapsed at md/lg, causing a 3-pane to 1-pane snap between
768 and 1280px while the workspace loaded.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
* refactor(inbox): use existing hasAnyItem for empty-state checks
Address CodeRabbit review: the empty-inbox condition was re-derived as
`items.length === 0` in three spots (list pane, preview pane, fields
rail) while `hasAnyItem = items.length > 0` already exists. Reuse
`!hasAnyItem` in all three so "empty" has a single source of truth.
Behavior-preserving.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Jakob Wennberg
b1f85bc33e