pub const UNKNOWN_OWNER: &str = "unknown-owner";Expand description
Fallback owner used when a remote exposes a repo segment but no owner.
Why: #1220 nests sessions two levels deep (<owner>/<repo>); an owner-less
remote (e.g. git@host:repo.git) would otherwise yield a one-level path and
break the convention. A stable sentinel keeps the two-segment shape.
What: "unknown-owner" — already slug-safe.
Test: parse_repo_only_uses_unknown_owner.