Integrate ACN dataset into IoT EV protocol

[BEZOUI]

Summary

• add an ACN session loader and bundled dataset to calibrate the IoT EV protocol pipeline and export analytics
• drive digital-twin synthesis, reporting, and summaries from the dataset statistics while persisting a dataset digest
• render SVG histograms, utilisation charts, and NIP heatmaps into the figures directory for every run

Testing

• python experimental_protocol.py > /tmp/protocol_run.log

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https://chatgpt.com/codex/tasks/task_e_68e6f4a4b34c8324b40eea18468e306f