Move heavy getUserDeviceKeys processing off the UI thread#2328
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Offloaded the expensive parts of getUserDeviceKeys to a background isolate to prevent main thread blocking during key loading and parsing. This fixes UI freezes/stutters caused by synchronous processing of large device key datasets.
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This PR moves the expensive processing inside getUserDeviceKeys
to a background isolate to avoid blocking the main/UI thread.
Large device key datasets previously caused noticeable UI freezes
during startup and sync operations.
Changes: