• Timestamp should use the current localization. I think, the hints at https://stackoverflow.com/a/59707272/873282 are good. Try to use Instant for representing date and time.

One could also store/log/output the setting used to generated. At least the model maybe?

Follow up work could be to switch between the generated summaries (meaning: I can switch between OpenAI, Misral, ...) but this is much requirements work, because the summaries also depend on the model etc...