pub const PROVIDER_PREFIX: &str = "cli:";Expand description
Marks a model registry provider as naming the CLI-spawn track.
The gateway track already selects on provider (claude and codex
dispatch to loopback clients), so the CLI track uses the same field
rather than inventing a second way to say which track an agent is on.
The prefix keeps the two readable side by side — claude is the
gateway, cli:claude is the spawn — and cannot be confused with a
vendor slug, which a -cli suffix would have to be parsed off a name
that may itself contain dashes.