Edit a past day (Editor Mode)

Attendance records lock after submission to prevent silent rewrites. To change a past day:

1. Open Attendance → pick the date you need to fix.
2. Top-right → toggle Editor Mode (blue pill).
3. Modify rows. The header shows "Editing locked record" in amber.
4. Tap Save Changes. A reason prompt opens — write what you're changing & why (e.g. "Bus arrived late, students marked absent in error").
5. Save. Audit log captures: who, when, what changed, the reason.