Offline first support for long periods

## Summary

Hi, I am looking to implement Amplitude in our fully offline first app that suers can be offline for prolonged periods like weeks. I wanted to check does amplitude offlien support have any limitations for our usecase?

- I know the sdk queues the events offline but is there limitaion of how long the events are stored? like say after N days/hours offline events are discarded?
- Does the ingestion engine have a limit of how far back the analytics events can be backed?

The issue names no files, tests, or entry points. Start by reviewing the SDK's offline event queue and ingestion behavior, then determine the limits for prolonged offline storage and backdated events; done means answering both questions with evidence in the project documentation.

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