- Added overload of CreateShowEnvelopeView(EnvelopeReceiverDto) to remove redundant id parsing logic
- Refactored EnvelopeLocked action to receive EnvelopeReceiverDto directly instead of fetching inside
- Centralized ViewData assignments for cleaner envelope rendering
- Improved error logging to include envelope UUID and receiver signature where applicable
- Adjusted EnvelopeLocked GET to return explicit "EnvelopeLocked" view for unauthenticated users