Flutter Background Execution

Treat background execution as an operating-system contract, not a Dart timer that is guaranteed to keep running. Preserve the project's scheduler or plugin when it satisfies the requirement; inspect pubspec.yaml, SDK constraints, target platforms, native capabilities, and existing registration before changing it.

Define the job

Record the trigger, acceptable delay, maximum duration, survival across process death or reboot, network/power constraints, user visibility, cancellation, and what should happen after sign-out or data deletion. Separate “must eventually run” from “must run at an exact time”; mobile schedulers are commonly opportunistic.

Choose the owner

• Keep work in dart-concurrency when it only needs to run while the app process is alive.
• Use an OS-backed scheduler for deferrable work that must survive the visible app.
• Use a user-visible foreground or continued-processing mode only when the platform permits the use case and its disclosure, permissions, and limits are satisfied.
• Route exact user reminders and notification delivery to flutter-notifications.
• Route a custom native scheduler bridge or reusable plugin implementation to flutter-platform-integration.

Do not add a scheduling package by default. Verify platform coverage, maintenance, target SDK support, callback model, and the repository's existing dependencies first.

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