Add human-led conversation learning loop

docs/services.md

@@ -118,3 +118,4 @@ Authorization is semantic, not just authentication: read and control agent token
 - `utils/json-safe.ts`: safe serialization for log/event data.
 
 When a module starts owning two independent reasons to change, extract a narrow collaborator and inject it. Do not solve size alone by moving methods into a generic utility file.
+Learning responsibilities are deliberately split: `conversation-attribution.ts` reconciles authorship, `conversation-learning-extractor.ts` derives credit and decisions, `conversation-learning-redactor.ts` enforces data minimisation, `conversation-learning-provider.ts` retrieves bounded examples, and `conversation-learning-evaluator.ts` runs offline hard gates. SQLite ownership stays in the event and learning repositories. `ChatService` only calls the narrow observer interface after authoritative synchronization.