Memory and learning solve different jobs
Chat history keeps conversational continuity; User Memory recalls private facts or preferences; Knowledge retrieves owner-approved sources. None of those automatically grants permission to change shared product behavior.
Learning changes a future instruction or workflow rule. That requires clear durable intent, an exact scope, an authorized actor, provenance, revision control, removal, and rollback—not an inference that every correction should be saved forever.
Fine-tuning changes model parameters and evaluation measures behavior; neither is a synonym for a saved rule. Keep each owner and consent path separate so deletion or review has a precise meaning.