FileVectorIndex persists one binary file per model under index/ with
atomic tmp+rename writes; FileDocumentCatalog persists a single
catalog.json, rebuilding the link graph via WikiLinks.Extract on every
upsert. Both start empty and report health Ok with a reset detail if
their file on disk is corrupt, rather than crashing.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Batches requests (default size 2, matching llama-server's limits for long
notes), sorts responses by index, and normalises vectors to unit length.
CheckAsync prefers GET /health, falling back to a one-word embed call when
the server doesn't expose it. Registers as a keyed IEmbeddingModel so
multiple models can be wired up under different names.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>