## Voice Mode
### Updates & Improvements
* Voice Mode recordings now use unique storage keys so a later recording
attempt on the same thread cannot overwrite or delete a previous
recording file.
* Voice Mode now saves realtime transcript messages separately from
recording metadata, so a recording metadata error cannot prevent
transcript messages from being saved.
* If a recording already exists for a thread, PingPong now updates the
recording metadata to the latest completed upload while leaving the
previous recording file intact. A clean-up plan for overwritten
recordings will be added at a later time.
* Added additional recording diagnostics to help monitor thread IDs,
recording IDs, replaced recordings, and finalized-session rejections.

### Resolved Issues
* Fixed: Starting the same Voice Mode session twice may, in rare cases,
cause a recording metadata error that deletes a previously saved
recording file.
* Fixed: Starting the same Voice Mode session twice in Next-Gen
Assistants mode may, in rare cases, cause a recording metadata error
that prevents transcript messages from being saved to the database.