When we get it wrong

The report page went down for a morning.

5 July 2026

What happened: Code that cites the battery hash shipped ahead of the database migration it depended on, so every report page errored until the migration was applied.
Root cause: The deploy and its database migration were treated as two independent steps; the code went live before the schema it read from existed.
Fix: The migration was applied and the report pages recovered.
Lesson: A deploy carrying a migration is not done until the migration is applied and verified — the two ship and are checked as one pair.