The two prior shell views took `children` and routed connection state by
having two distinct mounts. `InspectorView` collapses both into a single
state-machine view that switches `ViewHeader` modes internally, so the
old shells have no remaining call sites.
Spec section 4 (Views) rewritten to describe `InspectorView` instead.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>