Module persistence 

Persistence layer for HNSW indices.

Provides save/load functionality using a versioned binary file format. The format uses a fixed header for quick validation followed by bincode- serialized index data for compact storage of float arrays and adjacency lists.

Functions

load_from_file

Load an HnswIndex from the file at path.

load_from_file_with_dimension

Load an HnswIndex from the file at path, and verify that its dimension matches expected_dimension.

save_to_file

Save an HnswIndex to the file at path.