What happens to your words when you ask for a review
A review never happens on its own. You open a journal, you write, and you press the button. Until you do, nothing has left your device. Nothing is corrected in the background and nothing runs on a schedule.
When you do press it, here is exactly what is sent to the AI provider: the text of that one journal, and
two language codes, one for the language you are learning and one for the language you want the explanation
in. Nothing else. Not your other journals, not your email, not your account. ReviewRequest in
apps/api/src/ai/provider.ts is three fields, and it is worth reading if you would rather check the claim
than trust this paragraph.
When a correction becomes an exercise, the corrections drawn from your own sentence travel too: the original fragment, the replacement, the reason and the pattern. An exercise made from your writing has to carry the sentence it came from, so they go together. Still nothing outside that journal.
Two consequences are worth stating plainly.
The first is that the review sits beside your original rather than replacing it. The app never edits what you wrote. You can always read a suggestion against the sentence that produced it, which is the only way to disagree with one.
The second is that there is no background job. No nightly scan, no queued re-review of old entries. If you want a second opinion on today’s paragraph, you ask for one. If you do not, nothing happens, which is the feature rather than the absence of one.