* docs(checkpoint): add explainer page and workflow diagram
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
* docs(checkpoint): replace excalidraw source with exported PNG diagram
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>