Remove the broken PyPI melotts install and install MeloTTS from the official GitHub repo in the Space Dockerfile, including the required init_downloads step.
Add recent-job download links and filenames for completed MP3s, switch the Space image to Python 3.10, install MeloTTS in the Docker image, and enable melo-en by default.
Switch persistent output preference to /store with safer staging/fallback, limit Web UI to canonical model names, load uploaded file text into an always-visible editor, and add optional EN-only MeloTTS scaffolding.
