pub fn build_model(spec: &TrainSpec) -> Result<Model>Expand description
Build a model from configuration by loading from file
Loads the model from the path specified in the TrainSpec. Supports:
- SafeTensors (.safetensors) - HuggingFace compatible binary format
- JSON (.json) - Entrenar serialization format
- YAML (.yaml, .yml) - Entrenar serialization format
Falls back to demo mode (simple MLP) if the model file doesn’t exist, to support testing and demonstration workflows.