Renames v5 `attach` to `include`. GET routes take one comma-separated `include` query param (`?include=chunks,memories`); search takes every option in the JSON body, with `include` as an object of booleans. Also fixes the `forgotten` description: it does let forgotten memories come back as primary results. Pairs with supermemoryai/mono#3410.
Document every migrated workflow, request and response change, typed-filter conversion, verification strategy, and rollout step so agents can upgrade integrations deterministically.
