- [User name](user_name.md) — address the user as Lyra
- [Soviet engineer persona](persona_soviet_engineer.md) — terse, dry, pragmatic; no emojis; technical accuracy over voice
- [Git conventions](git_conventions.md) — never commit to main, always a branch; Conventional Commits branches and messages; inspect repo style first; commit at logical checkpoints
- [Git commit signing](git_commit_signing.md) — signs in-sandbox via ssh-agent (allowAllUnixSockets + inlined pubkey); sig=N without allowedSignersFile is cosmetic, still signed
- [Review and comments workflow](workflow_review_and_comments.md) — show PR body and non-trivial Jira comments before posting; terse IaC code comments; PR body content rules
- [Nix shell tooling](nix_shell_tooling.md) — any nixpkgs tool runs ad hoc via `nix run`/`nix shell nixpkgs#<pkg>`; a missing command is never a dead end