Renamed the systemd service from "pockettts" to "vox" for better branding and clarity.
Updated the script to reflect the new service name.
Addressed numba caching issues when running as a systemd service:
- Created to explicitly set to a project-local directory ().
- Modified to import early in the execution flow.
- Updated the systemd service file to grant write permissions to the directory.
- Added to to prevent caching files from being committed.
