nixos-config

Bump third-party packages in lib/overlays.nix (codex, the Dicklesworthstone Rust CLIs, grepai, gemini-cli, agent-browser, gws, ...) to their latest upstream version, refresh sha256 hashes for every platform, and validate with `make test NIXNAME=loom`. Use when the user says "update overlays", "update overlay packages", "bump codex", "update <pkg> to latest", "refresh tool versions", "update dicklesworthstone tools", "update all the AI tools", or "check for new versions of our git tools". Skip ubs, cm, cco — those are build-from-source and must be bumped manually.

MCP Agent Mail - Mail-like coordination layer for multi-agent workflows. Identities, inbox/outbox, file reservations, contact policies, threaded messaging, pre-commit guard, Human Overseer, static exports, disaster recovery. Git+SQLite backed. Python/FastMCP.