* perf(scene-graph): give imported nodes the shape every node shares
createDefaultNode had no default for booleanOperation, and the .fig
importer sets that key on every node. A key outside an object's initial
shape turns it into a JavaScriptCore dictionary, so every imported node
had its own structure and dictionary property storage. Fully loading
material3.fig took 3.7 GB RSS in Bun; with the default it takes 2.8 GB,
with 0.5 GB less JS heap and 0.46 GB less memory outside it. V8 keeps
these objects fast either way.
The defaults now must name every SceneNode field, which the compiler
enforces, and a test checks that imported nodes carry exactly the
default fields. booleanOperation states the explicit undefined the
importer already stores.
* fix(scene-graph): require booleanOperation and compare node keys in order
Every SceneNode field is required except booleanOperation, so a typed
producer could still omit it and build a node with a different shape.
It is now required, with undefined still meaning no operation. The
node-shape test compares keys in insertion order, since JavaScriptCore
lays out the same keys added in another order as a different shape.
The changelog entry no longer quotes the Bun measurement as figures for
the macOS app and Safari, and records the type change as breaking.
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