# rag-log-projections Delta (RAG portion)

## MODIFIED Requirements

### Requirement: RAG projection SHALL expose bounded document evidence only

The RAG adapter SHALL accept the logical `query` request, execute the existing knowledge tool through ToolBoundary, and project only `RagToolResult` fields. Context packs, retrieval traces, rerank traces, scores, hit reasons, domains, messages and full document bodies SHALL NOT appear in the Agent result. Projected evidence identity SHALL be chunk-scoped when chunk identity is available, allowing multiple excerpts from one logical source document.

#### Scenario: Project only bounded RAG evidence

- **WHEN** the adapter receives a logical query and the knowledge backend returns a result
- **THEN** it invokes through ToolBoundary and exposes only the bounded `RagToolResult` evidence fields, excluding retrieval internals and full document bodies

#### Scenario: Multiple chunks from one source may project

- **WHEN** the backend returns multiple evidence blocks with the same source and different chunk-scoped identities
- **AND** projection budgets allow them
- **THEN** the projected evidence list SHALL include more than one item for that source
- **AND** each item SHALL have a distinct `document_id`