noteShapeMigrations

The note shape's props migrations.

Version 2 changes what growY *means*. It is how much taller than its square the note had to be for the text to fit, and it used to be stored in screen-ish units — measured with the font, width and padding already multiplied by scale, then added to a scaled box:

`` was: height = 200 * scale + growY now: height = (200 + growY) * scale ``

Self-consistent either way, which is why nothing here ever caught it: the two agree whenever scale is 1 or growY is 0, and every note this codebase grew itself was correct. What they disagree about is every note that arrives from *outside* — a .tldr file, or an app writing records directly — where growY is in unscaled units. Such a note came out growY * (scale - 1) too short, so at scale 1.6 it lost 37.5% of its overflow and the text ran past the paper.

So the stored value is divided by the scale it was measured at, once.