Validate a session against an active realtime lease

{
    "endpoint": "GET /v1/realtime-leases/{id}/sessions/{sessionID}",
    "lease": {
        "id": "22222222-2222-4222-8222-222222222222",
        "userID": "local-user-001",
        "binding": {
            "clientInstanceID": "voice-device-001",
            "endpointHost": "api.onesay.io",
            "endpointRegion": "cn-hongkong",
            "networkFingerprint": "sha256:network-safe-fingerprint",
            "proxyFingerprint": "sha256:proxy-safe-fingerprint",
            "configVersion": "realtime-lease-v1"
        },
        "status": "active",
        "createdAt": "2026-07-10T12:00:00Z",
        "lastUsedAt": "2026-07-10T12:00:00Z",
        "expiresAt": "2026-07-10T12:02:00Z"
    },
    "session": {
        "id": "11111111-1111-1111-1111-111111111111",
        "userID": "local-user-001",
        "workflow": "dictation",
        "status": "created",
        "capabilitySnapshot": {
            "allowsRealtime": true,
            "allowsRefine": true,
            "allowsInsert": true
        },
        "providerRoute": {
            "asrProvider": "aliyun.realtime.asr",
            "refineProvider": "aliyun.refine"
        },
        "createdAt": "2026-04-01T16:19:40Z",
        "startedAt": "2026-04-01T16:19:45Z",
        "endedAt": "2026-04-01T16:20:00Z",
        "recordingDurationSeconds": 18.4,
        "partialTranscript": "hey can you help me rewrite",
        "finalTranscript": "hey can you help me rewrite this note",
        "refinedText": "Could you help me rewrite this note?",
        "billingStatus": {
            "state": "quota_consumed",
            "quotaSource": "pro",
            "consumedSeconds": 18.4,
            "updatedAt": "2026-04-01T16:20:00Z"
        },
        "privacyFlags": {
            "values": [
                "audit_trail_recorded"
            ]
        }
    },
    "reused": true
}