OptionaldimensionsReduced dimensions from MJ: Vector Indexes.Dimensions; undefined means the model's native size.
OptionalembeddingEmbedding goes through AIEmbeddingRunner, pinned to embeddingModelID. For older callers this is still a working driver, built on first read with the legacy environment-variable key.
The embedding model every call for this index pins, so the index holds one model's vectors.
The name the provider knows the index by (AIEngine.GetProviderIndexName).
OptionalproviderParsed MJ: Vector Indexes.ProviderConfig; undefined when absent or not valid JSON.
Resolved vector infrastructure for one (embedding model, vector index) pair.