Module builder 

VectorIndexBuilder for constructing vector search indices.

The builder orchestrates content discovery, text extraction, batch embedding, and index population:

1. Discover content files using glob patterns
2. Parse frontmatter and content
3. Call VectorExtractor to produce VectorDocuments
4. Batch embed documents via EmbeddingProvider
5. Insert into VectorBackend

Two-Phase Build

• Phase 1: Discover + extract all documents (sync, CPU-bound)
• Phase 2: Batch embed + insert (async, may be I/O-bound)

Structs

VectorIndexBuilder

Builder for constructing vector search indices.

Enums

ErrorHandling

Options for handling errors during vector index building.

Functions

compute_content_hash

Compute a content hash for freshness checking.