The run rows used a .nav-row class that was never defined, so the button
had no width or flex constraint: long run titles pushed the row past the
340px pane and forced a horizontal scrollbar with the title clipped.
Define .nav-row as a constrained selectable row (width:100%, min-width:0)
so the inner title ellipsizes in place. Align the pane and detail
typography to the 14/12 scale while here.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
ZacharyZhang-NYandClaude Opus 4.8
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