The Timeline lane marker lacked shrink-0, so inside the fixed 80px label
column the widest labels flex-shrank their color dot to zero width. The
Maintenance and Lifecycle dots collapsed and rendered as no dot at all,
while the shorter labels kept theirs. Add shrink-0 so every lane dot
renders at a consistent size.
Maintenance was the only label wide enough to fill the 80px column on its
own, which is what left its dot no room. Rename it to Upkeep so all five
labels fit and align. A registry test now pins each lane's key, order,
and label, and asserts every lane carries a color, so a future rewrite of
the action registry cannot silently rename a lane or drop a dot color.
Anso
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