RAG application tools
RagAdapters registers authorization, ingestion, FTS5 retrieval, snapshot checks and file delivery through public RegisteredTool and RetrievalTargetRegistry interfaces. Core owns neither these business rules nor SQLite tables. The adapters use Node.js built-ins; Redis uses the adjacent storage/ application dependencies.
domain.ts owns normalized requests, trusted source catalogs, Chinese search tokens, chunks, selection and per-claim citation contracts. adapters.ts separately reads user files, the business database and approved records obtained through Memory. Tools run through Runtime INTERACTION.ACT.TOOL; the FTS provider runs through RETRIEVAL.SEARCH.
The trusted host configures identity, readers and connections, not the model. One adapter binds one request and task directory; the host owns mutual exclusion and file access policies.