R2VA preview deployment notes

Run the README commands from a Miowtion checkout with Ref2VA encoding and independent reference/current tile budgets. See docs/features/r2va.md in that checkout for the input and cache contract.
Load the MiniMax-H3 Ref2VA backbone and Turbo 8-step LoRA separately.
This safetensors file contains the Veda predictor and tile plans. FP8 weights are dequantized to BF16 when loaded.
The example uses 32 reference tiles and 32 current-video tiles; text, VLM conditioning and audio remain fully attended.
Run scripts/prepare_official_r2va_demo.py from the Miowtion checkout to prepare the official H3 example. It requires Miowtion, Python, ffmpeg and ffprobe, but no API key or GPU. The official PE is preserved. The video soundtrack is exposed as <Audio 1> and the external voice reference as <Audio 2>.
For a private model repository, authenticate with hf auth login before downloading the predictor.