Author Compositor graphs in the web UI with React Flow and execute
them locally. The native writer materializes RGB/Exposure/Invert/Blur/
Mix/Alpha Over/Transform/Viewer/Composite nodes into a real
CompositorNodeTree, the reader returns node locations and more node
types, and save/reopen keeps nodes, links, positions and properties.
Co-Authored-By: Claude Code <noreply@anthropic.com>
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