API key management

{
  "name": "production-server",
  "scopes": ["query"]
}

{
  "key": "pk_live_a1b2c3d4...",
  "key_prefix": "pk_live_a1b2",
  "name": "production-server",
  "scopes": ["query"],
  "created_at": "2026-05-24T18:00:00Z"
}

{
  "keys": [
    {
      "key_prefix": "pk_live_a1b2",
      "name": "production-server",
      "scopes": ["query"],
      "created_at": "2026-05-24T18:00:00Z",
      "last_used_at": "2026-05-24T20:14:00Z"
    }
  ]
}

{
  "key_prefix": "pk_live_a1b2",
  "period": "2026-05",
  "request_count": 4823,
  "quota": 100000,
  "percent_used": 4.823,
  "throttled_24h": 0,
  "recent_requests": [
    { "timestamp": "2026-05-24T20:14:00Z", "endpoint": "/v1/jurisdictions/nyc/cohorts/distribution", "status": 200 }
  ]
}