Stable Audio Transcription on Reopen

🔄 Improvements

• Completed dictaphone recordings now correctly restore their transcription state when a map is reopened
• Finished maps remain idle after reopening instead of restarting transcription processes
• Retranscription now provides clearer processing feedback while it is running
• Improved handling of saved audio metadata to better preserve transcription progress between sessions

✨ New Features

🛠 Fixes

• Fixed: Completed audio recordings could start transcribing again after reopening a map
• Fixed: Finished dictaphone maps could show outdated "pending" transcription placeholders after reconnecting or reopening
• Fixed: Automatic retranscription could be triggered again unnecessarily in some situations
• Fixed: Audio transcription state was not always fully restored from previously saved data