This commit refactors the data repositories to remove user-specific filtering. It simplifies the data access logic by retrieving all data from the Hive boxes and removing the need to filter by `userId` in the repository methods.
This change makes the app function in single-user mode and removes the need to manage multiple user contexts within the data layer.
Specifically:
- Removes `userId` parameter from repository methods.
- Updates the setting repository to use fixed keys.
- Removes user ID filtering from queries.
- Removes user ID parameters from Cubits and Blocs
- Updates initial data creation