Wrap the logo link and the APP_VERSION text into a single bottom-aligned
Group so they read as one lockup ("gitmost v0.9..."). Move the version
styling into a new .brandVersion CSS class: shrink it from 12px to 10px,
keep the dimmed color and selectability, and lift it via margin-bottom so
its text baseline sits on the wordmark baseline of the 30px desktop logo
(derived from the logo SVG geometry). Drop the redundant lh prop.
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