Offline Queues for Coastal Survey Teams

Survey teams upload batches when towers appear between headlands. We shard queues by job id so a stalled photo upload never blocks numeric readings that safety officers need sooner.

Drift migrations ship with reversible down scripts tested on low-RAM devices. If a migration fails mid-hike, the app rolls back to the last known good schema and surfaces a non-alarming banner with a support short code.

Workmanager intervals follow tidal windows rather than fixed fifteen-minute ticks—fewer wakeups, longer battery for cold mornings on the pier.

Conflict resolution defaults to “keep local draft, attach server copy as attachment” so reviewers can reconcile visually instead of silently discarding field edits.