## What changed
Move WebSocket authentication arguments, settings, credential loading, and upgrade authorization into a shared crate using `http` types. Update the app server, transport, and CLI to consume it directly, and remove the `AppServer` prefix from the shared types.
Hide token digests and JWT verification secrets from authentication policy `Debug` output.
## Testing
Move the existing argument validation, capability-token authorization, and signed bearer-token verification tests into the new crate.
GitOrigin-RevId: 1dd20043a3f8efbca55af7eda338b62a62e8fd68
