🤖 **App Studio can freshen up older apps.** Apps you built or had a bot
build keep working forever — but the app format evolves, and now App Studio
tells you when one of yours was made with an older version of it (a small
"older format" tag) and offers a one-tap **Upgrade**. Upgrading redeploys
the exact same code in the current format: nothing about the app changes,
and the previous version stays in History like every deploy.