Template quantities now calculate correctly

Work-area templates now resolve quantity formulas using the destination room's dimensions.

Bug Fixes

Applying a work-area template previously resolved all quantity formulas (like PF × FH for flood-damaged rooms) to $0.00 because the resolver wasn't reading flood height from the destination room's scope data. The fix consolidates dimension-loading logic into a shared helper so templates and in-app edits use the same calculation path. Now when you apply a template to a room with flood data, quantities resolve correctly based on that room's actual perimeter and flood height.