explain

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 0.70). The script scripts/kokoro-say.py retrieves model weights from GitHub releases (github.com/thewh1teagle/kokoro-onnx) and Hugging Face (huggingface.co/hexgrad), constituting a weak/unknown/suspicious operational runtime dependency.