Harry Bayliss
b5dfaf39c4
Sidebar rows that overflow the rail width used to spill characters into the main viewport. They now truncate with a trailing "…" when unfocused (or when the focused name still fits). The focused row whose name overflows runs a pause-scroll-pause marquee: 1 s hold on the head, ~150 ms per cell scroll, 1 s hold on the tail, snap back. The row's geometry never moves while it animates, so nothing below shifts. A dedicated 150 ms goroutine flips sidebarDirty only while a row is actively animating; the chrome ticker does the actual repaint. Idle is a single cheap wakeup. focus / spawn / exit / restart all reset the marquee state so the new focused row starts from frame zero. When the row's budget is tight, the trailing timer indicator drops before the name ellipses since the name is the only identifier the row carries. clampVisible() is a defensive net inside write(): even if a row's decoration size were mis-computed, it will not spill past the sidebar band into the PTY area.