NB Shift - your Jupyter notebook, re-runnable and ported to marimo

Drop a .ipynb and a real in-browser parser reads every cell first: which names each cell binds at the top level, which cells reference a name defined only later, which execution counts run backwards, which imports cannot load under WebAssembly. Then pick one of four lanes over that same notebook - a reproducibility audit, a port to a marimo notebook, a WASM shareability check, or a scheduled batch-run plan - and every prescan finding has to be answered. A derived work built on and crediting @openai/jupyter-notebook (audit), @marimo-team/jupyter-to-marimo (port), @marimo-team/wasm-compatibility (WASM) and @marimo-team/marimo-batch (batch). Not affiliated with OpenAI, Project Jupyter or marimo.

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