Agent manifest

{
  "protocol_versions": ["0.1"],
  "agent": { "name": "picker-agent", "version": "1.4.2", "vendor": "acme" },
  "consumes_modalities": ["image/jpeg", "proprio/json", "text/event+json"],
  "time_models": ["lockstep", "streaming"],
  "max_obs_rate_hz": 30,
  "extensions": {}
}