feat(run): lay out the Workspace lane strip as a horizontal row above the detail panel

The lane strip was a fixed-width vertical column beside the detail panel.
Flipped it to a horizontally scrolling row on top so the detail/console
area gets the full page width below it.

client/src/components/lanes/LaneStripCard.tsx

@@ -1,9 +1,10 @@
 /**
- * @file The compact lane tile used in the Workspace's vertical lane list. It
- * carries only what you need to pick a lane — which lane, is it alive, what
- * stage, how far — because the full card, its controls and its working-copy
- * facts live in the detail panel beside it. Keeping the tile small and full
- * width is what lets many lanes stay scannable in one scrolling column.
+ * @file The compact lane tile used in the Workspace's horizontal lane strip.
+ * It carries only what you need to pick a lane — which lane, is it alive,
+ * what stage, how far — because the full card, its controls and its
+ * working-copy facts live in the detail panel below it. Keeping the tile
+ * small and fixed-width is what lets many lanes stay scannable in one
+ * scrolling row.
  * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
  */
 
@@ -42,7 +43,7 @@ export default function LaneStripCard({
       aria-pressed={selected}
       onClick={onSelect}
       title={lane.cwd}
-      className={`w-full shrink-0 rounded-lg border p-3 text-left shadow-sm transition-colors ${
+      className={`w-56 shrink-0 rounded-lg border p-3 text-left shadow-sm transition-colors ${
         selected
           ? "border-accent bg-accent/10"
           : "border-border bg-surface-2 hover:border-border-light hover:bg-surface-3"