A host may move the engine's credit to the TOP of the map (a phone layout with the sheet flush at the
bottom). creditFloor() would then have used a credit near y=10 as the floor, and syncAttribClearance()
would have reserved the whole map height (capped at 120px), so the pill lifted itself for nothing. Now
a credit in the upper half of the pill's layout parent is not counted: no floor, and the 20px default
clearance. Every credit is at the bottom today, so this changes nothing yet.
Every bundle rebuilt (PinHint ships through ProfileLoader), composites after their children, then the
tree and SRI.
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