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| Scenario | Solution | | :--- | :--- | | | Save state and allow "Resume" from the last chunk received. | | License Expiry | Some licenses expire after 30 days offline. App must alert user "License Expired: Please connect to internet to renew" and allow online renewal without re-downloading the whole file. | | HDR Mismatch | User downloads 4K HDR movie but plays it on a non-HDR screen. App must tone-map the video correctly during playback. | | Account Downgrade | User downgrades subscription. Existing 4K downloads should be invalidated or marked as unplayable until upgrade. |

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