Module backends 

Concrete EmbeddingBackend implementations.

• StaticHashBackend — hash-based fallback, always compiled in. Used only for EmbeddingModelType::StaticSimilarityMRL and as the last resort when both bert and model2vec features are disabled.
• BertBackend (feature bert) — Candle + HuggingFace Hub BERT transformer models (MiniLM / multilingual / TinyBERT / BGE).
• Model2VecBackend (feature model2vec, default) — model2vec-rs static embeddings for the Potion family (multilingual / code).

Re-exports

pub use bert::BertBackend;

pub use model2vec::Model2VecBackend;

pub use static_hash::StaticHashBackend;

Modules

bert

BERT backend: HuggingFace Hub model load, tokenize, forward pass, masked mean pooling, and L2 normalization.

model2vec

Model2Vec backend — static, multilingual embeddings via model2vec-rs.

static_hash

Hash-based static embedding fallback. Used by [EmbeddingModelType::StaticSimilarityMRL].