memory-providers.md points the Hindsight section at the catalog entry and the upstream integration docs, documents the auto-install on `hermes update` / first agent start (and the allow_lazy_installs=false one-liner), and adds a "Migrating from bundled Hindsight" subsection. memory.md, overview.md, integrations/index.md, cli-commands.md, docker.md and nix-setup.md no longer say hindsight ships in-tree or as the [hindsight] extra.