Basin row grows from h:10 to h:20. Bar gauge, Canvas, and Level/Volume
timeseries all scale proportionally. Canvas internal frame doubled (480x600)
and tank rectangle stretched (height 240→520) so the canvas content fills
the panel instead of letterboxing in the top half. Bottom readouts moved
from y=280 to y=562 to stay just below the taller tank floor.
Flow row + its panels shifted down by 10 grid rows to make room.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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