ModelSelect renders its dropdown through a body portal with viewport-clamped
fixed placement, so the panel keeps its full width instead of being cut by the
sidebar edge. The preset seat passes Menu an anchor class with an icon-only
min-width floor and moves its label ellipsis onto a dedicated span, keeping the
chip's overflow degradation breakpoint-free. Toasts move to the viewport top
and shrink to fit their text.
Yif
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