Add Sketch anchor switch (Center / Top Left)#16
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New segmented two-button switch in the Sketch section, above Background:
choose whether the canvas is anchored Center (default, as before) or Top
Left within the preview. Baked into the iframe body flex alignment on run
and pushed live to a running sketch via postMessage ('set-anchor').
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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What & why
Adds an Anchor control to the Sketch section of the side panel, above Background — a two-button segmented switch (only one active at a time):
It maps to the sketch iframe body's flex alignment (
centervsflex-start), baked in on Run and pushed live to a running sketch viapostMessage({type:'set-anchor'})(handled by the injected capture controller), so switching repositions the canvas immediately without a restart.Reviewer notes
node --checkpasses; Debug build links cleanly.flex-start→flex-endonjustify-content).🤖 Generated with Claude Code