# Concepts

These pages describe the backend systems that turn source books into stored chunks, vectors, extracted graph candidates, manifested graph data, and retrieval-ready context.

## World Ingestion Pipeline

- [World Ingestion Pipeline](world-ingestion-pipeline/README.md)
- [World Storage](world-ingestion-pipeline/world-storage.md)
- [Text Splitting](world-ingestion-pipeline/text-splitting.md)
- [Vector Storage And Chunk Embeddings](world-ingestion-pipeline/vector-storage-and-chunk-embeddings.md)
- [Knowledge Graph Extraction Pipeline](world-ingestion-pipeline/knowledge-graph-extraction-pipeline.md)
- [Graph Manifestation](world-ingestion-pipeline/graph-manifestation.md)

## Storage Layers

- [Storage Layers](storage-layers/README.md)
- [Qdrant Vector Store](storage-layers/qdrant-vector-store.md)
- [Neo4j Graph Store](storage-layers/neo4j-graph-store.md)

## Shared Backend Systems

- [Shared Backend Systems](shared-backend-systems/README.md)
- [Provider Key Scheduler](shared-backend-systems/provider-key-scheduler.md)
- [Model Registry](shared-backend-systems/model-registry.md)

## Retrieval

- [Retrieval](retrieval/README.md)