We added ingestion guardrails around document and chunk handling. Retrieval quality depends on what enters the index, not only on the query path.
The focus is explicit failure. Bad input, duplicate state, or invalid chunks should be caught before they become retrieval noise.
A feedback store was added so retrieval and answer behavior can be improved from recorded outcomes instead of anecdotes.
Metrics and health modules were added around RAG infrastructure so operational state can be inspected.
A circuit breaker path was added so repeated retrieval or generation failures can be surfaced instead of retried blindly.