The stats card's tools row capped the tally at an arbitrary top three, so a
session that used five tools showed three and quietly dropped two, and the
row wrapped to a second line whenever the count grew a digit — which resized
the node, the stats card, and every card below it mid-scrub.
ToolPills now keeps ONE line, like the Input/Output row above it, and folds
whatever does not fit into a trailing "其他 +N". The fit is measured, not
guessed: an off-flow gauge carries every pill and every chip width at its
natural size, and a layout pass picks the widest set that fits alongside the
chip it would actually carry. A pill's width does not depend on whether its
neighbours are on screen, so the gauge answers for the tail the row is not
showing, and the row renders only what fits — nothing is ever clipped or
overlapped. Measuring the live chip instead would feed the pass's own output
back into its input; measuring only the widest chip would cost a pill to
digits the chip never shows.
With no tally — the split generation's head carries none until the detail
lands — the row holds a lone "其他 +0", so the card reads as a figure
settling into place rather than a blank gap filling in. Because the row never
wraps, the node's height depends on the card's width alone and stops
resizing as a session's tool mix changes.
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