Covers the dashboard's CPU/mem stat badges and the invariant behind
the "mobile status bar" fix from #4862: the sticky stats header must
sit flush under the fixed mobile nav, with no gap or overlap. Adds a
data-testid to ScrollableView's header so the test doesn't rely on
CSS selectors.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Amir Raminfar