[Bug] Demo data does not correctly populate categories records

[mikev-cw]

🛰️ What happened?

As pointed on Discord, seems that demo data generation is not correctly populating categories data, causing weird behavior on sorting (and who knows what else). Check if is related to subcategories feature recently pushed.

🖥️ OS

Both

🔄 What version?

Irrelevant

🔢 Version

0.2.2

📸 Screenshots or logs

Registrazione.schermo.2026-01-26.alle.22.14.44.mov

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