ADR-006: IndexedDB instead of PGlite for initial scale

Status

Accepted

Context

MVP page retrieval is small (current page only). PGlite/Postgres WASM adds bundle size and complexity without clear benefit.

Decision

Use in-memory/hybrid keyword retrieval for the current page. Optional summary cache in IndexedDB. Revisit SQLite-WASM/OPFS when multi-doc RAG creates a measured bottleneck.

Consequences

Faster MVP
Will need migration work for P2 multi-document RAG