Retrieve an agent session

{  "id": "string",  "sessionId": "string",  "projectId": "string",  "sandboxId": "string",  "agent": "string",  "agentLabel": "string",  "communication": {    "status": "ready",    "capabilities": [      "messages"    ],    "message": "string",    "requirements": [      {        "code": "string",        "action": "restart",        "message": "string"      }    ]  },  "requirements": [    {      "code": "string",      "action": "restart",      "message": "string"    }  ],  "surface": "terminal",  "status": "active",  "turnId": "string",  "turnState": "submitted",  "needsYou": true,  "waitingOn": "string",  "pendingInput": {    "requestId": "string",    "kind": "string",    "summary": "string"  },  "error": "string",  "bridgeState": "starting",  "released": true,  "releasing": true,  "bridgeEventSeq": 0,  "drifted": true,  "problems": [    {      "seq": 0,      "event": "string",      "reason": "string"    }  ]}