[F1:LS2] Update Local Storage Data

[timebox: , complexity: ]

As a developer, every time a change is made to the app data (Redux State), I want to add a time stamp to the data, and I want to encrypt a copy of the data, and overwrite the local storage with the new update, so that the most recent data is stored on the device.

Start by locating the Redux State updates and the local storage integration. Determine how app-data changes are detected, which timestamp and encryption requirements apply, and how the updated local-storage value can be verified; done means each data change stores the latest timestamped and encrypted copy.

Written by the indexing model from the issue text.