MOBILE-SHELL-PARITY. Adds 7 Vitest assertions for the three defects:
- AppSidebar: header pt is '!hidden' (default close-X suppressed), content pt
is a full-height flex column (flex-col/h-full/min-h-0), showCloseIcon is not
forced false, and WorkspaceSwitcher renders inside the drawer.
- SidebarHeader: the Icon stub now exposes data-icon; mobile brand-row control
is an explicit close (aria-label 'Sluit menu', tabler-x), desktop stays the
collapse chevron, and the header renders expanded on mobile even when
sidebarCollapsed is true (logo parity).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
bert.hausmans
31e79f79c3