AssetManager 0.5.4.3

- Registry editor redesigned around one explicit operation per entry.
- Radio-card selection for setting values, changing permissions, deleting values, or deleting keys.
- Only fields required for the selected operation are displayed.
- Common Windows principals can be selected without entering SIDs.
- Registry permissions provide safe presets for Read, Change, and Full control, while custom RegistryRights remain supported.
- Existing Registry definitions from 0.5.4.2 remain compatible.