- Introduced voiceover relationship to StoryBeats with AI-generated flag.
- Added BeatVoiceover component for playing audio narrations with a minimal interface.
- Updated StoryPage, StoryViewer, and StoryTableOfContents to display and handle voiceovers.
- Created Voiceovers collection for uploading and managing audio narrations for beats.
- Included migration script to support voiceover functionality in the database.
