passes `onNavigate` to the viewer, which turns on the platform's new carousel:
arrows, a thumbnail strip and left/right/escape.
`?view=` is an absolute path in this panel, so the step is written straight back —
the name-relative-to-folder conversion the Files screen does is that screen's own
convention rather than a rule the viewer imposes.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>