193f913eb1
Tank rectangle moved from top-aligned (top=20 in 760 frame) to vertically centered (top=40, with 40 px top + 40 px bottom margins for the rim and floor caption text). Header rim caption shifted to y=20, footer floor to y=724, so both sit just outside the tank rect. Label algorithm extended: when a label would normally go BELOW its line but doing so would push it past the tank floor (which happens for very small dryRunThresholdPercent — dryRunLevel sits right on outflowLevel, both nearly at the basin floor), it falls back to stacking ABOVE the previous label instead of extending into invisible space. This keeps all 5 threshold labels inside the visible canvas area at the cost of a slight visual overlap of the lowest label with its own line. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
convert
Makes unit conversions