Support MediaPipe Tasks with managed model downloads and legacy FaceMesh compatibility. Preserve installed NumPy and OpenCV during optional installation.
Unify browser-playable previews, fix OpenSeeFace viseme output, and preserve independent cached phrase timing when filters change. Clarify experimental word prediction.
Validated with dependency, lifecycle, formatting, cache and preview delivery checks, plus user-confirmed ComfyUI testing. Python 3.13 execution was not tested.
Fixes#379