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Offline keep-working

A WiFi or internet outage does not stop the shop. The field app at /app keeps loading from the last saved copy on the device, and every change a tech makes queues on that device and syncs itself the moment the connection is back. Nothing is lost.

1. The app keeps loading

A service worker caches the field app shell, so opening /app works with no signal. It shows the last data pulled from the shop.

2. Changes queue safely

New inspections, stage changes and notes are written to the device and added to an outbox. A banner tells the tech the work is offline and will sync when they reconnect.

3. It syncs on its own

When the connection returns the outbox flushes to the server automatically (also every 30 seconds and on demand). Confirmed items clear from the queue.

This device

Live status for the browser you are reading this on. Each phone or tablet keeps its own queue.

Connection
...
Service worker
...
Queued changes
...
Last data pull
...

Server

Repair orders on server
...
Last server change
...
Open the field app

If a device shows queued changes that will not clear, open the field app on that device while it has signal and tap Sync. The queue lives in the browser, so clearing that browser's data would drop unsynced work.