Real CLI → recording HTTP proxy → real Environment B server.
Synthetic names: Environment A and Environment B. Credentials suppressed.

Case: bare; exit 1
[23:54:10.779] ERROR (#2): PeerLinkError: That pairing code is unknown, expired, or already used.

Observed requests:
[
  {
    "method": "GET",
    "path": "/.well-known/t3/environment",
    "containsLocalCode": false
  },
  {
    "method": "POST",
    "path": "/oauth/mcp/register",
    "containsLocalCode": false
  },
  {
    "method": "POST",
    "path": "/oauth/mcp/decision",
    "containsLocalCode": true
  }
]

Case: lowercase and space-padded; exit 1
[23:54:12.328] ERROR (#2): PeerLinkError: That pairing code is unknown, expired, or already used.

Observed requests:
[
  {
    "method": "GET",
    "path": "/.well-known/t3/environment",
    "containsLocalCode": false
  },
  {
    "method": "POST",
    "path": "/oauth/mcp/register",
    "containsLocalCode": false
  },
  {
    "method": "POST",
    "path": "/oauth/mcp/decision",
    "containsLocalCode": true
  }
]