0007 The product name lives in one package
Context
The owner may rename the product. The name appears in binaries, folders on hosts, environment variables, systemd units and the wire protocol.
Decision
Only internal/brand spells the name. Everything else derives it: Go code uses brand.Name, brand.HostBinary and brand.Env(...), and the justfile and the release workflow read it from that file. scripts/check-name.sh fails the build if the name appears anywhere else in code. scripts/rename.sh does a rename and lists the manual steps.
Consequences
- Good, because a rename is one command and a review.
- Bad, because hosts that already run an old helper keep the old folder names until their sessions end.