[FEAT] Atomic Registry Transactions

[mark-e-deyoung]

Implement a mechanism for atomic registry operations. Currently, writing multiple values is non-atomic, which can leave the system in a corrupted state if a partial failure occurs.

Proposed Strategy:

• Implement a RPC method.
• Support 'Commit' and 'Rollback' semantics.
• Potential implementation using a 'Backup and Restore' pattern for the target key or utilizing (if supported by the target Wine/Windows environment).

[mark-e-deyoung]

Closing as duplicate of #14.