Add sentencepiece and protobuf dependencies for LTX-Video tokenizer

- sentencepiece>=0.2.0 required for LTX-Video tokenizer
- protobuf>=5.27.0 required by sentencepiece
- These are needed to parse the spiece.model tokenizer file

requirements.txt

@@ -19,6 +19,8 @@ safetensors>=0.4.2
 huggingface-hub>=0.23.0
 peft>=0.10.0  # Required for LoRA adapter loading
 numpy>=1.26.0  # Python 3.12+ compatible
+sentencepiece>=0.2.0  # Required for LTX-Video tokenizer
+protobuf>=5.27.0  # Required by sentencepiece
 
 # Audio Dependencies (Optional - for TTS and music generation)
 scipy>=1.12.0