Previously the picker silently hid when the URL didn't contain a
/<version>/ segment — which is exactly the case for `just build`
opened via file://. The reader saw no version indicator at all.
Now the picker always mounts a "version: latest" label first
(immediately, before any fetch). When a versions.json is reachable
AND we have a real version segment in the URL (so navigation is
computable), the label upgrades into the existing dropdown. On
file:// or single-version sites the static label stays.
CSS gains styling for the static "version: <name>" name span.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
swaitsandClaude Opus 4.7
da00e46570